[CodeGen] Align MIR parser and printer ownership

19 files changed, 20 insertions, 10847 deletions

diff --git a/backend/lib/MIR/CMakeLists.txt b/backend/lib/MIR/CMakeLists.txt
index f227390..cf5dbcd 100644
--- a/backend/lib/MIR/CMakeLists.txt
+++ b/backend/lib/MIR/CMakeLists.txt
@@ -4,30 +4,20 @@ set(
   RCCBackendMIRSources
   EmbeddedIR.cpp
   LLVMConstantSyntax.cpp
-  MIDebugSyntax.cpp
-  MILexer.cpp
-  MIRDataParser.cpp
-  MIRDocument.cpp
-  MIRDocumentParser.cpp
-  MIRDocumentReferenceValidation.cpp
-  MIRDocumentPrinter.cpp
-  MIRFrameParser.cpp
-  MIRFunctionParser.cpp
-  MIRFunctionRecordsParser.cpp
-  MIRMetadataParser.cpp
-  MIRMetadataTextParser.cpp
-  MIParser.cpp
-  MIPrinter.cpp
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MILexer.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MIParser.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MIRParser.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRPrinter.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRYamlMapping.cpp"
 )
 set(
   RCCBackendMIRHeaders
+  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/CodeGen/MIRParser/MIParser.h"
+  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/CodeGen/MIRParser/MIRParser.h"
+  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/CodeGen/MIRPrinter.h"
+  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/CodeGen/MIRYamlMapping.h"
   "${RCC_BACKEND_SOURCE_DIR}/include/rcc/MIR/EmbeddedIR.h"
   "${RCC_BACKEND_SOURCE_DIR}/include/rcc/MIR/LLVMConstantSyntax.h"
-  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/MIR/MIDebugSyntax.h"
-  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/MIR/MILexer.h"
-  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/MIR/MIRDocument.h"
-  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/MIR/MIParser.h"
-  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/MIR/MIPrinter.h"
 )
 
 add_library(RCCBackendMIR ${RCCBackendMIRSources})
@@ -61,41 +51,20 @@ install(
 rcc_backend_register_format_files(
   "${CMAKE_CURRENT_SOURCE_DIR}/EmbeddedIR.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/LLVMConstantSyntax.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIDebugSyntax.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MILexer.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDataParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocument.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocumentParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocumentParser.h"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocumentReferenceValidation.h"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocumentReferenceValidation.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocumentPrinter.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRFrameParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRFunctionParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRFunctionRecordsParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRMetadataParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRMetadataTextParser.h"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRMetadataTextParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRParserUtilities.h"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIPrinter.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MILexer.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MILexer.h"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MIParser.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MIRParser.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRPrinter.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRYamlMapping.cpp"
   ${RCCBackendMIRHeaders}
 )
 rcc_backend_register_tidy_files(
   "${CMAKE_CURRENT_SOURCE_DIR}/EmbeddedIR.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/LLVMConstantSyntax.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIDebugSyntax.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MILexer.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDataParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocument.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocumentParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocumentReferenceValidation.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRDocumentPrinter.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRFrameParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRFunctionParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRFunctionRecordsParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRMetadataParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIRMetadataTextParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIParser.cpp"
-  "${CMAKE_CURRENT_SOURCE_DIR}/MIPrinter.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MILexer.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MIParser.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRParser/MIRParser.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRPrinter.cpp"
+  "${RCC_BACKEND_SOURCE_DIR}/lib/CodeGen/MIRYamlMapping.cpp"
 )
diff --git a/backend/lib/MIR/MIDebugSyntax.cpp b/backend/lib/MIR/MIDebugSyntax.cpp
deleted file mode 100644
index e614a21..0000000
--- a/backend/lib/MIR/MIDebugSyntax.cpp
+++ /dev/null
@@ -1,264 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "rcc/MIR/MIDebugSyntax.h"
-
-#include <array>
-#include <charconv>
-#include <cstdint>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <system_error>
-#include <utility>
-
-namespace rcc::mir {
-namespace {
-
-[[nodiscard]] bool parseIndex(std::string_view Text, std::uint64_t &Value) noexcept {
-  if (Text.empty())
-    return false;
-  const auto [End, Error] = std::from_chars(Text.data(), Text.data() + Text.size(), Value, 10);
-  return Error == std::errc{} && End == Text.data() + Text.size();
-}
-
-[[nodiscard]] const auto &namedOpcodes() {
-  static constexpr auto Opcodes = std::to_array<std::pair<std::string_view, std::uint64_t>>({
-      {"DW_OP_addr", 0x03},
-      {"DW_OP_deref", 0x06},
-      {"DW_OP_const1u", 0x08},
-      {"DW_OP_const1s", 0x09},
-      {"DW_OP_const2u", 0x0A},
-      {"DW_OP_const2s", 0x0B},
-      {"DW_OP_const4u", 0x0C},
-      {"DW_OP_const4s", 0x0D},
-      {"DW_OP_const8u", 0x0E},
-      {"DW_OP_const8s", 0x0F},
-      {"DW_OP_constu", 0x10},
-      {"DW_OP_consts", 0x11},
-      {"DW_OP_dup", 0x12},
-      {"DW_OP_drop", 0x13},
-      {"DW_OP_over", 0x14},
-      {"DW_OP_pick", 0x15},
-      {"DW_OP_swap", 0x16},
-      {"DW_OP_rot", 0x17},
-      {"DW_OP_xderef", 0x18},
-      {"DW_OP_abs", 0x19},
-      {"DW_OP_and", 0x1A},
-      {"DW_OP_div", 0x1B},
-      {"DW_OP_minus", 0x1C},
-      {"DW_OP_mod", 0x1D},
-      {"DW_OP_mul", 0x1E},
-      {"DW_OP_neg", 0x1F},
-      {"DW_OP_not", 0x20},
-      {"DW_OP_or", 0x21},
-      {"DW_OP_plus", 0x22},
-      {"DW_OP_plus_uconst", 0x23},
-      {"DW_OP_shl", 0x24},
-      {"DW_OP_shr", 0x25},
-      {"DW_OP_shra", 0x26},
-      {"DW_OP_xor", 0x27},
-      {"DW_OP_bra", 0x28},
-      {"DW_OP_eq", 0x29},
-      {"DW_OP_ge", 0x2A},
-      {"DW_OP_gt", 0x2B},
-      {"DW_OP_le", 0x2C},
-      {"DW_OP_lt", 0x2D},
-      {"DW_OP_ne", 0x2E},
-      {"DW_OP_skip", 0x2F},
-      {"DW_OP_regx", 0x90},
-      {"DW_OP_fbreg", 0x91},
-      {"DW_OP_bregx", 0x92},
-      {"DW_OP_piece", 0x93},
-      {"DW_OP_deref_size", 0x94},
-      {"DW_OP_xderef_size", 0x95},
-      {"DW_OP_nop", 0x96},
-      {"DW_OP_push_object_address", 0x97},
-      {"DW_OP_call2", 0x98},
-      {"DW_OP_call4", 0x99},
-      {"DW_OP_call_ref", 0x9A},
-      {"DW_OP_form_tls_address", 0x9B},
-      {"DW_OP_call_frame_cfa", 0x9C},
-      {"DW_OP_bit_piece", 0x9D},
-      {"DW_OP_implicit_value", 0x9E},
-      {"DW_OP_stack_value", 0x9F},
-      {"DW_OP_implicit_pointer", 0xA0},
-      {"DW_OP_addrx", 0xA1},
-      {"DW_OP_constx", 0xA2},
-      {"DW_OP_entry_value", 0xA3},
-      {"DW_OP_const_type", 0xA4},
-      {"DW_OP_regval_type", 0xA5},
-      {"DW_OP_deref_type", 0xA6},
-      {"DW_OP_xderef_type", 0xA7},
-      {"DW_OP_convert", 0xA8},
-      {"DW_OP_reinterpret", 0xA9},
-      {"DW_OP_LLVM_fragment", 0x1000},
-      {"DW_OP_LLVM_convert", 0x1001},
-      {"DW_OP_LLVM_tag_offset", 0x1002},
-      {"DW_OP_LLVM_entry_value", 0x1003},
-      {"DW_OP_LLVM_implicit_pointer", 0x1004},
-      {"DW_OP_LLVM_arg", 0x1005},
-      {"DW_OP_LLVM_extract_bits_sext", 0x1006},
-      {"DW_OP_LLVM_extract_bits_zext", 0x1007},
-  });
-  return Opcodes;
-}
-
-[[nodiscard]] const auto &attributeEncodings() {
-  static constexpr auto Encodings = std::to_array<std::pair<std::string_view, std::uint64_t>>({
-      {"DW_ATE_address", 0x01},
-      {"DW_ATE_boolean", 0x02},
-      {"DW_ATE_complex_float", 0x03},
-      {"DW_ATE_float", 0x04},
-      {"DW_ATE_signed", 0x05},
-      {"DW_ATE_signed_char", 0x06},
-      {"DW_ATE_unsigned", 0x07},
-      {"DW_ATE_unsigned_char", 0x08},
-      {"DW_ATE_imaginary_float", 0x09},
-      {"DW_ATE_packed_decimal", 0x0A},
-      {"DW_ATE_numeric_string", 0x0B},
-      {"DW_ATE_edited", 0x0C},
-      {"DW_ATE_signed_fixed", 0x0D},
-      {"DW_ATE_unsigned_fixed", 0x0E},
-      {"DW_ATE_decimal_float", 0x0F},
-      {"DW_ATE_UTF", 0x10},
-      {"DW_ATE_UCS", 0x11},
-      {"DW_ATE_ASCII", 0x12},
-  });
-  return Encodings;
-}
-
-[[nodiscard]] std::optional<std::string> opcodeName(std::uint64_t Opcode) {
-  if (Opcode >= 0x30U && Opcode <= 0x4FU)
-    return "DW_OP_lit" + std::to_string(Opcode - 0x30U);
-  if (Opcode >= 0x50U && Opcode <= 0x6FU)
-    return "DW_OP_reg" + std::to_string(Opcode - 0x50U);
-  if (Opcode >= 0x70U && Opcode <= 0x8FU)
-    return "DW_OP_breg" + std::to_string(Opcode - 0x70U);
-  const auto &Opcodes = namedOpcodes();
-  const auto Found =
-      std::ranges::find_if(Opcodes, [Opcode](const auto &Entry) { return Entry.second == Opcode; });
-  if (Found == Opcodes.end())
-    return std::nullopt;
-  return std::string(Found->first);
-}
-
-[[nodiscard]] std::size_t opcodeSize(std::uint64_t Opcode) noexcept {
-  if (Opcode >= 0x70U && Opcode <= 0x8FU)
-    return 2;
-  switch (Opcode) {
-  case 0x92:
-  case 0x1000:
-  case 0x1001:
-  case 0x1006:
-  case 0x1007:
-    return 3;
-  case 0x10:
-  case 0x11:
-  case 0x23:
-  case 0x90:
-  case 0x94:
-  case 0x1002:
-  case 0x1003:
-  case 0x1005:
-    return 2;
-  default:
-    return 1;
-  }
-}
-
-[[nodiscard]] std::optional<std::string_view> attributeName(std::uint64_t Encoding) noexcept {
-  const auto &Encodings = attributeEncodings();
-  const auto Found = std::ranges::find_if(
-      Encodings, [Encoding](const auto &Entry) { return Entry.second == Encoding; });
-  if (Found == Encodings.end())
-    return std::nullopt;
-  return Found->first;
-}
-
-} // namespace
-
-std::optional<std::uint64_t> parseDIExpressionOpcodeName(std::string_view Name) noexcept {
-  const auto NumberedOpcode = [Name](std::string_view Prefix,
-                                     std::uint64_t Base) -> std::optional<std::uint64_t> {
-    if (!Name.starts_with(Prefix))
-      return std::nullopt;
-    std::uint64_t Index = 0;
-    if (!parseIndex(Name.substr(Prefix.size()), Index) || Index > 31)
-      return std::nullopt;
-    return Base + Index;
-  };
-  if (auto Opcode = NumberedOpcode("DW_OP_lit", 0x30U))
-    return Opcode;
-  if (auto Opcode = NumberedOpcode("DW_OP_reg", 0x50U))
-    return Opcode;
-  if (auto Opcode = NumberedOpcode("DW_OP_breg", 0x70U))
-    return Opcode;
-
-  const auto &NamedOpcodes = namedOpcodes();
-  const auto *const Found =
-      std::ranges::find_if(NamedOpcodes, [Name](const auto &Entry) { return Entry.first == Name; });
-  if (Found == NamedOpcodes.end())
-    return std::nullopt;
-  return Found->second;
-}
-
-std::optional<std::uint64_t>
-parseDIExpressionAttributeEncodingName(std::string_view Name) noexcept {
-  const auto &Encodings = attributeEncodings();
-  const auto Found =
-      std::ranges::find_if(Encodings, [Name](const auto &Entry) { return Entry.first == Name; });
-  if (Found == Encodings.end())
-    return std::nullopt;
-  return Found->second;
-}
-
-std::string invalidDIExpressionElementMessage(std::string_view Name) {
-  if (Name.starts_with("DW_OP_"))
-    return "invalid DWARF op '" + std::string(Name) + "'";
-  if (Name.starts_with("DW_ATE_"))
-    return "invalid DWARF attribute encoding '" + std::string(Name) + "'";
-  return "expected unsigned integer";
-}
-
-std::string formatDIExpression(std::span<const std::uint64_t> Elements) {
-  std::string Result = "!DIExpression(";
-  std::size_t Position = 0;
-  bool First = true;
-  while (Position < Elements.size()) {
-    const std::uint64_t Opcode = Elements[Position];
-    const auto Name = opcodeName(Opcode);
-    const std::size_t Size = opcodeSize(Opcode);
-    if (!Name || Position + Size > Elements.size()) {
-      Result = "!DIExpression(";
-      for (std::size_t Index = 0; Index < Elements.size(); ++Index) {
-        if (Index != 0)
-          Result.append(", ");
-        Result.append(std::to_string(Elements[Index]));
-      }
-      Result.push_back(')');
-      return Result;
-    }
-
-    if (!First)
-      Result.append(", ");
-    First = false;
-    Result.append(*Name);
-    for (std::size_t Argument = 1; Argument < Size; ++Argument) {
-      Result.append(", ");
-      if (Opcode == 0x1001U && Argument == 2U) {
-        if (const auto Encoding = attributeName(Elements[Position + Argument])) {
-          Result.append(*Encoding);
-          continue;
-        }
-      }
-      Result.append(std::to_string(Elements[Position + Argument]));
-    }
-    Position += Size;
-  }
-  Result.push_back(')');
-  return Result;
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MILexer.cpp b/backend/lib/MIR/MILexer.cpp
deleted file mode 100644
index f568cef..0000000
--- a/backend/lib/MIR/MILexer.cpp
+++ /dev/null
@@ -1,964 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "rcc/MIR/MILexer.h"
-
-#include <algorithm>
-#include <array>
-#include <cassert>
-#include <cstddef>
-#include <cstdint>
-#include <iomanip>
-#include <optional>
-#include <ranges>
-#include <sstream>
-#include <string>
-#include <string_view>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-namespace {
-
-template <std::size_t Size>
-[[nodiscard]] consteval std::array<std::string_view, Size>
-sortSpellings(std::array<std::string_view, Size> Spellings) {
-  for (std::size_t Left = 0; Left < Spellings.size(); ++Left) {
-    for (std::size_t Right = Left + 1; Right < Spellings.size(); ++Right) {
-      if (Spellings[Right] < Spellings[Left])
-        std::swap(Spellings[Left], Spellings[Right]);
-    }
-  }
-  return Spellings;
-}
-
-template <std::size_t Size>
-[[nodiscard]] consteval bool
-hasUniqueSpellings(const std::array<std::string_view, Size> &Spellings) {
-  for (std::size_t Index = 1; Index < Spellings.size(); ++Index) {
-    if (Spellings[Index - 1] == Spellings[Index])
-      return false;
-  }
-  return true;
-}
-
-constexpr auto Keywords = sortSpellings(std::array{
-    std::string_view{"addrspace"},
-    std::string_view{"adjust_cfa_offset"},
-    std::string_view{"afn"},
-    std::string_view{"align"},
-    std::string_view{"arcp"},
-    std::string_view{"basealign"},
-    std::string_view{"bb_id"},
-    std::string_view{"bbsections"},
-    std::string_view{"bfloat"},
-    std::string_view{"blockaddress"},
-    std::string_view{"call-entry"},
-    std::string_view{"call-frame-size"},
-    std::string_view{"cfi-type"},
-    std::string_view{"constant-pool"},
-    std::string_view{"contract"},
-    std::string_view{"custom"},
-    std::string_view{"dead"},
-    std::string_view{"deactivation-symbol"},
-    std::string_view{"debug-instr-number"},
-    std::string_view{"debug-location"},
-    std::string_view{"debug-use"},
-    std::string_view{"dbg-instr-ref"},
-    std::string_view{"def"},
-    std::string_view{"def_cfa"},
-    std::string_view{"def_cfa_offset"},
-    std::string_view{"def_cfa_register"},
-    std::string_view{"dereferenceable"},
-    std::string_view{"disjoint"},
-    std::string_view{"distinct"},
-    std::string_view{"double"},
-    std::string_view{"early-clobber"},
-    std::string_view{"ehfunclet-entry"},
-    std::string_view{"ehscope-entry"},
-    std::string_view{"escape"},
-    std::string_view{"exact"},
-    std::string_view{"float"},
-    std::string_view{"floatpred"},
-    std::string_view{"fp128"},
-    std::string_view{"frame-destroy"},
-    std::string_view{"frame-setup"},
-    std::string_view{"got"},
-    std::string_view{"half"},
-    std::string_view{"heap-alloc-marker"},
-    std::string_view{"implicit"},
-    std::string_view{"implicit-def"},
-    std::string_view{"inbounds"},
-    std::string_view{"inlineasm-br-indirect-target"},
-    std::string_view{"internal"},
-    std::string_view{"intpred"},
-    std::string_view{"intrinsic"},
-    std::string_view{"invariant"},
-    std::string_view{"ir-block-address-taken"},
-    std::string_view{"jump-table"},
-    std::string_view{"killed"},
-    std::string_view{"landing-pad"},
-    std::string_view{"lanemask"},
-    std::string_view{"liveins"},
-    std::string_view{"liveout"},
-    std::string_view{"llvm_def_aspace_cfa"},
-    std::string_view{"llvm_register_pair"},
-    std::string_view{"llvm_vector_offset"},
-    std::string_view{"llvm_vector_register_mask"},
-    std::string_view{"llvm_vector_registers"},
-    std::string_view{"machine-block-address-taken"},
-    std::string_view{"mmra"},
-    std::string_view{"negate_ra_sign_state"},
-    std::string_view{"negate_ra_sign_state_with_pc"},
-    std::string_view{"ninf"},
-    std::string_view{"nnan"},
-    std::string_view{"noconvergent"},
-    std::string_view{"nofpexcept"},
-    std::string_view{"non-temporal"},
-    std::string_view{"nneg"},
-    std::string_view{"nsw"},
-    std::string_view{"nsz"},
-    std::string_view{"nusw"},
-    std::string_view{"nuw"},
-    std::string_view{"offset"},
-    std::string_view{"pcsections"},
-    std::string_view{"post-instr-symbol"},
-    std::string_view{"ppc_fp128"},
-    std::string_view{"pre-instr-symbol"},
-    std::string_view{"reassoc"},
-    std::string_view{"rel_offset"},
-    std::string_view{"remember_state"},
-    std::string_view{"renamable"},
-    std::string_view{"register"},
-    std::string_view{"restore"},
-    std::string_view{"restore_state"},
-    std::string_view{"same_value"},
-    std::string_view{"samesign"},
-    std::string_view{"shufflemask"},
-    std::string_view{"stack"},
-    std::string_view{"successors"},
-    std::string_view{"target-flags"},
-    std::string_view{"target-index"},
-    std::string_view{"tied-def"},
-    std::string_view{"undef"},
-    std::string_view{"undefined"},
-    std::string_view{"unknown-address"},
-    std::string_view{"unknown-size"},
-    std::string_view{"unpredictable"},
-    std::string_view{"volatile"},
-    std::string_view{"window_save"},
-    std::string_view{"x86_fp80"},
-});
-
-constexpr auto MetadataKeywords = sortSpellings(std::array{
-    std::string_view{"!DIExpression"},
-    std::string_view{"!DILocation"},
-    std::string_view{"!alias.scope"},
-    std::string_view{"!noalias"},
-    std::string_view{"!noalias.addrspace"},
-    std::string_view{"!range"},
-    std::string_view{"!tbaa"},
-});
-
-static_assert(hasUniqueSpellings(Keywords));
-static_assert(hasUniqueSpellings(MetadataKeywords));
-
-[[nodiscard]] constexpr bool isASCIIAlpha(char Character) noexcept {
-  return (Character >= 'a' && Character <= 'z') || (Character >= 'A' && Character <= 'Z');
-}
-
-[[nodiscard]] constexpr bool isASCIIDigit(char Character) noexcept {
-  return Character >= '0' && Character <= '9';
-}
-
-[[nodiscard]] constexpr bool isASCIIHexDigit(char Character) noexcept {
-  return isASCIIDigit(Character) || (Character >= 'a' && Character <= 'f') ||
-         (Character >= 'A' && Character <= 'F');
-}
-
-[[nodiscard]] constexpr unsigned hexDigitValue(char Character) noexcept {
-  if (isASCIIDigit(Character))
-    return static_cast<unsigned>(Character - '0');
-  if (Character >= 'a' && Character <= 'f')
-    return static_cast<unsigned>(Character - 'a' + 10);
-  return static_cast<unsigned>(Character - 'A' + 10);
-}
-
-[[nodiscard]] constexpr bool isIdentifierCharacter(char Character) noexcept {
-  return isASCIIAlpha(Character) || isASCIIDigit(Character) || Character == '_' ||
-         Character == '-' || Character == '.' || Character == '$';
-}
-
-[[nodiscard]] constexpr bool isRegisterCharacter(char Character) noexcept {
-  return isIdentifierCharacter(Character) && Character != '.';
-}
-
-[[nodiscard]] constexpr bool isHorizontalWhitespace(char Character) noexcept {
-  return Character == ' ' || Character == '\t';
-}
-
-[[nodiscard]] constexpr bool isNewlineCharacter(char Character) noexcept {
-  return Character == '\n' || Character == '\r';
-}
-
-[[nodiscard]] constexpr bool isHexFloatingPointPrefix(char Character) noexcept {
-  return Character == 'H' || Character == 'K' || Character == 'L' || Character == 'M' ||
-         Character == 'R';
-}
-
-[[nodiscard]] std::string unexpectedCharacterMessage(unsigned char Character) {
-  if (Character >= 0x20U && Character <= 0x7EU) {
-    return "unexpected character '" + std::string(1, static_cast<char>(Character)) + "'";
-  }
-  std::ostringstream Message;
-  Message << "unexpected byte 0x" << std::uppercase << std::hex << std::setw(2) << std::setfill('0')
-          << static_cast<unsigned>(Character);
-  return Message.str();
-}
-
-} // namespace
-
-std::string_view getMITokenKindName(MITokenKind Kind) noexcept {
-  switch (Kind) {
-  case MITokenKind::EndOfFile:
-    return "end-of-file";
-  case MITokenKind::Error:
-    return "error";
-  case MITokenKind::Newline:
-    return "newline";
-  case MITokenKind::Comma:
-    return "comma";
-  case MITokenKind::Equal:
-    return "equal";
-  case MITokenKind::Underscore:
-    return "underscore";
-  case MITokenKind::Colon:
-    return "colon";
-  case MITokenKind::DoubleColon:
-    return "double-colon";
-  case MITokenKind::Dot:
-    return "dot";
-  case MITokenKind::Exclaim:
-    return "exclaim";
-  case MITokenKind::LeftParen:
-    return "left-paren";
-  case MITokenKind::RightParen:
-    return "right-paren";
-  case MITokenKind::LeftBrace:
-    return "left-brace";
-  case MITokenKind::RightBrace:
-    return "right-brace";
-  case MITokenKind::Plus:
-    return "plus";
-  case MITokenKind::Minus:
-    return "minus";
-  case MITokenKind::Less:
-    return "less";
-  case MITokenKind::Greater:
-    return "greater";
-  case MITokenKind::Keyword:
-    return "keyword";
-  case MITokenKind::MetadataKeyword:
-    return "metadata-keyword";
-  case MITokenKind::Identifier:
-    return "identifier";
-  case MITokenKind::NamedRegister:
-    return "named-register";
-  case MITokenKind::NamedVirtualRegister:
-    return "named-virtual-register";
-  case MITokenKind::MachineBasicBlockLabel:
-    return "machine-basic-block-label";
-  case MITokenKind::MachineBasicBlock:
-    return "machine-basic-block";
-  case MITokenKind::StackObject:
-    return "stack-object";
-  case MITokenKind::FixedStackObject:
-    return "fixed-stack-object";
-  case MITokenKind::NamedGlobalValue:
-    return "named-global-value";
-  case MITokenKind::GlobalValue:
-    return "global-value";
-  case MITokenKind::ExternalSymbol:
-    return "external-symbol";
-  case MITokenKind::MCSymbol:
-    return "mc-symbol";
-  case MITokenKind::IntegerLiteral:
-    return "integer-literal";
-  case MITokenKind::FloatingPointLiteral:
-    return "floating-point-literal";
-  case MITokenKind::HexLiteral:
-    return "hex-literal";
-  case MITokenKind::VirtualRegister:
-    return "virtual-register";
-  case MITokenKind::ConstantPoolItem:
-    return "constant-pool-item";
-  case MITokenKind::JumpTableIndex:
-    return "jump-table-index";
-  case MITokenKind::NamedIRBlock:
-    return "named-ir-block";
-  case MITokenKind::IRBlock:
-    return "ir-block";
-  case MITokenKind::NamedIRValue:
-    return "named-ir-value";
-  case MITokenKind::IRValue:
-    return "ir-value";
-  case MITokenKind::QuotedIRValue:
-    return "quoted-ir-value";
-  case MITokenKind::SubRegisterIndex:
-    return "subregister-index";
-  case MITokenKind::StringConstant:
-    return "string-constant";
-  }
-  return "unknown";
-}
-
-bool isMIKeyword(std::string_view Spelling) noexcept {
-  return std::ranges::binary_search(Keywords, Spelling);
-}
-
-bool isMIMetadataKeyword(std::string_view Spelling) noexcept {
-  return std::ranges::binary_search(MetadataKeywords, Spelling);
-}
-
-std::string_view MIToken::stringValue() const noexcept {
-  if (const auto *View = std::get_if<std::string_view>(&StringValue))
-    return *View;
-  if (const auto *Owned = std::get_if<std::string>(&StringValue))
-    return *Owned;
-  return {};
-}
-
-bool MIToken::isRegister() const noexcept {
-  return Kind == MITokenKind::NamedRegister || Kind == MITokenKind::NamedVirtualRegister ||
-         Kind == MITokenKind::VirtualRegister || Kind == MITokenKind::Underscore;
-}
-
-bool MIToken::isRegisterFlag() const noexcept {
-  return isKeyword("implicit") || isKeyword("implicit-def") || isKeyword("def") ||
-         isKeyword("dead") || isKeyword("killed") || isKeyword("undef") || isKeyword("internal") ||
-         isKeyword("early-clobber") || isKeyword("debug-use") || isKeyword("renamable");
-}
-
-bool MIToken::isMemoryOperandFlag() const noexcept {
-  return isKeyword("volatile") || isKeyword("non-temporal") || isKeyword("dereferenceable") ||
-         isKeyword("invariant") || Kind == MITokenKind::StringConstant;
-}
-
-MIToken MILexer::makeToken(MITokenKind Kind, TextRange Range, std::string_view Spelling,
-                           std::string_view IntegerValue) {
-  return MIToken(Kind, Range, Spelling, {}, IntegerValue);
-}
-
-MIToken MILexer::makeStringToken(MITokenKind Kind, TextRange Range, std::string_view Spelling,
-                                 std::string_view StringValue, std::string_view IntegerValue) {
-  return MIToken(Kind, Range, Spelling, StringValue, IntegerValue);
-}
-
-MIToken MILexer::makeOwnedStringToken(MITokenKind Kind, TextRange Range, std::string_view Spelling,
-                                      std::string StringValue, std::string_view IntegerValue) {
-  return MIToken(Kind, Range, Spelling, std::move(StringValue), IntegerValue);
-}
-
-class MILexer::Impl final {
-public:
-  Impl(std::string SourceName, std::string SourceText, MILexerOptions Options)
-      : Source(std::move(SourceName), std::move(SourceText)), Options(Options) {}
-
-  [[nodiscard]] MIToken next() {
-    if (Failed)
-      return token(MITokenKind::EndOfFile, Offset, Offset);
-
-    if (auto TriviaError = skipTrivia())
-      return std::move(*TriviaError);
-
-    if (atEnd())
-      return token(MITokenKind::EndOfFile, Offset, Offset);
-
-    const std::size_t Begin = Offset;
-    MIToken Result = lexToken();
-    if (Result.kind() == MITokenKind::Error)
-      return Result;
-
-    if (Options.MaximumTokenLength != 0 &&
-        Result.range().End.Offset - Result.range().Begin.Offset > Options.MaximumTokenLength) {
-      return fail(Begin, Offset, "machine instruction token exceeds the configured length limit");
-    }
-    if (Options.MaximumTokens != 0 && TokenCount >= Options.MaximumTokens) {
-      return fail(Begin, Offset, "machine instruction token count exceeds the configured limit");
-    }
-    ++TokenCount;
-    return Result;
-  }
-
-  [[nodiscard]] const TextSource &source() const noexcept {
-    return Source;
-  }
-
-  [[nodiscard]] std::span<const TextDiagnostic> diagnostics() const noexcept {
-    return Diagnostics;
-  }
-
-  [[nodiscard]] bool failed() const noexcept {
-    return Failed;
-  }
-
-  [[nodiscard]] std::size_t tokenCount() const noexcept {
-    return TokenCount;
-  }
-
-private:
-  struct QuotedValue final {
-    std::size_t End = 0;
-    std::string Value;
-  };
-
-  [[nodiscard]] std::string_view text() const noexcept {
-    return Source.text();
-  }
-
-  [[nodiscard]] bool atEnd(std::size_t Lookahead = 0) const noexcept {
-    return Offset >= text().size() || Lookahead >= text().size() - Offset;
-  }
-
-  [[nodiscard]] char peek(std::size_t Lookahead = 0) const noexcept {
-    if (Offset >= text().size() || Lookahead >= text().size() - Offset)
-      return '\0';
-    return text()[Offset + Lookahead];
-  }
-
-  [[nodiscard]] bool startsWith(std::string_view Prefix) const noexcept {
-    return text().substr(Offset).starts_with(Prefix);
-  }
-
-  [[nodiscard]] std::string_view slice(std::size_t Begin, std::size_t End) const noexcept {
-    assert(Begin <= End && End <= text().size());
-    return text().substr(Begin, End - Begin);
-  }
-
-  [[nodiscard]] MIToken token(MITokenKind Kind, std::size_t Begin, std::size_t End,
-                              std::string_view IntegerValue = {}) const {
-    return MILexer::makeToken(Kind, Source.range(Begin, End), slice(Begin, End), IntegerValue);
-  }
-
-  [[nodiscard]] MIToken stringToken(MITokenKind Kind, std::size_t Begin, std::size_t End,
-                                    std::string_view Value,
-                                    std::string_view IntegerValue = {}) const {
-    return MILexer::makeStringToken(Kind, Source.range(Begin, End), slice(Begin, End), Value,
-                                    IntegerValue);
-  }
-
-  [[nodiscard]] MIToken ownedStringToken(MITokenKind Kind, std::size_t Begin, std::size_t End,
-                                         std::string Value,
-                                         std::string_view IntegerValue = {}) const {
-    return MILexer::makeOwnedStringToken(Kind, Source.range(Begin, End), slice(Begin, End),
-                                         std::move(Value), IntegerValue);
-  }
-
-  [[nodiscard]] MIToken fail(std::size_t Begin, std::size_t End, std::string Message) {
-    End = std::clamp(End, Begin, text().size());
-    Diagnostics.push_back(TextDiagnostic{
-        .Severity = DiagnosticSeverity::Error,
-        .Category = "mir-lexer",
-        .Message = std::move(Message),
-        .SourceName = std::string(Source.name()),
-        .Range = Source.range(Begin, End),
-    });
-    Failed = true;
-    return token(MITokenKind::Error, Begin, End);
-  }
-
-  [[nodiscard]] std::optional<MIToken> skipTrivia() {
-    while (true) {
-      while (!atEnd() && isHorizontalWhitespace(peek()))
-        ++Offset;
-
-      if (peek() == ';') {
-        while (!atEnd() && !isNewlineCharacter(peek()))
-          ++Offset;
-        continue;
-      }
-
-      if (!startsWith("/*"))
-        return std::nullopt;
-
-      const std::size_t Begin = Offset;
-      Offset += 2;
-      while (!atEnd() && !startsWith("*/"))
-        ++Offset;
-      if (atEnd()) {
-        return fail(Begin, Offset,
-                    "end of machine instruction input reached before the closing '*/'");
-      }
-      Offset += 2;
-    }
-  }
-
-  [[nodiscard]] std::optional<QuotedValue> scanQuotedString(std::size_t QuoteOffset) {
-    assert(QuoteOffset < text().size() && text()[QuoteOffset] == '"');
-    std::size_t Cursor = QuoteOffset + 1;
-    while (Cursor < text().size() && text()[Cursor] != '"') {
-      if (isNewlineCharacter(text()[Cursor])) {
-        Offset = Cursor;
-        static_cast<void>(fail(QuoteOffset, Cursor,
-                               "end of machine instruction reached before the closing '\"'"));
-        return std::nullopt;
-      }
-      ++Cursor;
-    }
-    if (Cursor == text().size()) {
-      Offset = Cursor;
-      static_cast<void>(
-          fail(QuoteOffset, Cursor, "end of machine instruction reached before the closing '\"'"));
-      return std::nullopt;
-    }
-
-    std::string Value;
-    Value.reserve(Cursor - QuoteOffset - 1);
-    for (std::size_t Index = QuoteOffset + 1; Index < Cursor; ++Index) {
-      const char Character = text()[Index];
-      if (Character == '\\' && Index + 1 < Cursor && text()[Index + 1] == '\\') {
-        Value.push_back('\\');
-        ++Index;
-        continue;
-      }
-      if (Character == '\\' && Index + 2 < Cursor && isASCIIHexDigit(text()[Index + 1]) &&
-          isASCIIHexDigit(text()[Index + 2])) {
-        const unsigned Decoded =
-            hexDigitValue(text()[Index + 1]) * 16U + hexDigitValue(text()[Index + 2]);
-        Value.push_back(static_cast<char>(Decoded));
-        Index += 2;
-        continue;
-      }
-      Value.push_back(Character);
-    }
-    return QuotedValue{.End = Cursor + 1, .Value = std::move(Value)};
-  }
-
-  [[nodiscard]] MIToken lexName(MITokenKind Kind, std::size_t PrefixLength) {
-    const std::size_t Begin = Offset;
-    Offset += PrefixLength;
-    if (peek() == '"') {
-      auto Quoted = scanQuotedString(Offset);
-      if (!Quoted)
-        return token(MITokenKind::Error, Begin, Offset);
-      Offset = Quoted->End;
-      return ownedStringToken(Kind, Begin, Offset, std::move(Quoted->Value));
-    }
-
-    const std::size_t ValueBegin = Offset;
-    while (!atEnd() && isIdentifierCharacter(peek()))
-      ++Offset;
-    return stringToken(Kind, Begin, Offset, slice(ValueBegin, Offset));
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexMachineBasicBlock() {
-    const bool IsReference = startsWith("%bb.");
-    if (!IsReference && !startsWith("bb."))
-      return std::nullopt;
-
-    const std::size_t Begin = Offset;
-    const std::size_t PrefixLength = IsReference ? 4 : 3;
-    Offset += PrefixLength;
-    if (!isASCIIDigit(peek())) {
-      return fail(Offset, std::min(Offset + 1, text().size()),
-                  "expected a decimal block number after '" +
-                      std::string(IsReference ? "%bb.'" : "bb.'"));
-    }
-
-    const std::size_t NumberBegin = Offset;
-    while (!atEnd() && isASCIIDigit(peek()))
-      ++Offset;
-    const std::string_view Number = slice(NumberBegin, Offset);
-
-    if (peek() != '.') {
-      return stringToken(IsReference ? MITokenKind::MachineBasicBlock
-                                     : MITokenKind::MachineBasicBlockLabel,
-                         Begin, Offset, {}, Number);
-    }
-
-    ++Offset;
-    const std::size_t NameBegin = Offset;
-    if (peek() == '"') {
-      auto Quoted = scanQuotedString(Offset);
-      if (!Quoted)
-        return token(MITokenKind::Error, Begin, Offset);
-      Offset = Quoted->End;
-      return ownedStringToken(IsReference ? MITokenKind::MachineBasicBlock
-                                          : MITokenKind::MachineBasicBlockLabel,
-                              Begin, Offset, std::move(Quoted->Value), Number);
-    }
-    while (!atEnd() && isIdentifierCharacter(peek()))
-      ++Offset;
-    return stringToken(IsReference ? MITokenKind::MachineBasicBlock
-                                   : MITokenKind::MachineBasicBlockLabel,
-                       Begin, Offset, slice(NameBegin, Offset), Number);
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexIndex(std::string_view Prefix, MITokenKind Kind,
-                                                bool HasOptionalName) {
-    if (!startsWith(Prefix) || !isASCIIDigit(peek(Prefix.size())))
-      return std::nullopt;
-
-    const std::size_t Begin = Offset;
-    Offset += Prefix.size();
-    const std::size_t NumberBegin = Offset;
-    while (!atEnd() && isASCIIDigit(peek()))
-      ++Offset;
-    const std::string_view Number = slice(NumberBegin, Offset);
-
-    if (!HasOptionalName)
-      return token(Kind, Begin, Offset, Number);
-
-    if (peek() != '.')
-      return stringToken(Kind, Begin, Offset, {}, Number);
-
-    ++Offset;
-    const std::size_t NameBegin = Offset;
-    if (peek() == '"') {
-      auto Quoted = scanQuotedString(Offset);
-      if (!Quoted)
-        return token(MITokenKind::Error, Begin, Offset);
-      Offset = Quoted->End;
-      return ownedStringToken(Kind, Begin, Offset, std::move(Quoted->Value), Number);
-    }
-    while (!atEnd() && isIdentifierCharacter(peek()))
-      ++Offset;
-    return stringToken(Kind, Begin, Offset, slice(NameBegin, Offset), Number);
-  }
-
-  [[nodiscard]] std::optional<MIToken>
-  lexIRReference(std::string_view Prefix, MITokenKind NumericKind, MITokenKind NamedKind) {
-    if (!startsWith(Prefix))
-      return std::nullopt;
-    if (isASCIIDigit(peek(Prefix.size())))
-      return lexIndex(Prefix, NumericKind, false);
-    return lexName(NamedKind, Prefix.size());
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexRegister() {
-    if (peek() != '%' && peek() != '$')
-      return std::nullopt;
-
-    const std::size_t Begin = Offset;
-    const char Prefix = peek();
-    ++Offset;
-    if (Prefix == '%' && isASCIIDigit(peek())) {
-      const std::size_t NumberBegin = Offset;
-      while (!atEnd() && isASCIIDigit(peek()))
-        ++Offset;
-      return token(MITokenKind::VirtualRegister, Begin, Offset, slice(NumberBegin, Offset));
-    }
-
-    if (Prefix == '%' && !isRegisterCharacter(peek())) {
-      Offset = Begin;
-      return std::nullopt;
-    }
-
-    const std::size_t NameBegin = Offset;
-    while (!atEnd() && isRegisterCharacter(peek()))
-      ++Offset;
-    return stringToken(Prefix == '%' ? MITokenKind::NamedVirtualRegister
-                                     : MITokenKind::NamedRegister,
-                       Begin, Offset, slice(NameBegin, Offset));
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexGlobalValue() {
-    if (peek() != '@')
-      return std::nullopt;
-    if (!isASCIIDigit(peek(1)))
-      return lexName(MITokenKind::NamedGlobalValue, 1);
-
-    const std::size_t Begin = Offset++;
-    const std::size_t NumberBegin = Offset;
-    while (!atEnd() && isASCIIDigit(peek()))
-      ++Offset;
-    return token(MITokenKind::GlobalValue, Begin, Offset, slice(NumberBegin, Offset));
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexMCSymbol() {
-    constexpr std::string_view Prefix = "<mcsymbol ";
-    if (!startsWith(Prefix))
-      return std::nullopt;
-
-    const std::size_t Begin = Offset;
-    Offset += Prefix.size();
-    if (peek() != '"') {
-      const std::size_t NameBegin = Offset;
-      while (!atEnd() && isIdentifierCharacter(peek()))
-        ++Offset;
-      const std::string_view Name = slice(NameBegin, Offset);
-      if (peek() != '>') {
-        return fail(Begin, Offset, "expected the '<mcsymbol ...' operand to be closed by '>'");
-      }
-      ++Offset;
-      return stringToken(MITokenKind::MCSymbol, Begin, Offset, Name);
-    }
-
-    auto Quoted = scanQuotedString(Offset);
-    if (!Quoted)
-      return token(MITokenKind::Error, Begin, Offset);
-    Offset = Quoted->End;
-    if (peek() != '>') {
-      return fail(Begin, Offset, "expected the '<mcsymbol ...' operand to be closed by '>'");
-    }
-    ++Offset;
-    return ownedStringToken(MITokenKind::MCSymbol, Begin, Offset, std::move(Quoted->Value));
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexFloatHexBits() {
-    if (!startsWith("f0x") && !startsWith("f0X"))
-      return std::nullopt;
-    std::size_t End = Offset + 3;
-    while (End < text().size() && isASCIIHexDigit(text()[End]))
-      ++End;
-    if (End == Offset + 3)
-      return std::nullopt;
-    const std::size_t Begin = Offset;
-    Offset = End;
-    return token(MITokenKind::FloatingPointLiteral, Begin, Offset);
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexHexadecimalLiteral() {
-    if (peek() != '0' || (peek(1) != 'x' && peek(1) != 'X'))
-      return std::nullopt;
-
-    std::size_t End = Offset + 2;
-    bool IsFloatingPoint = false;
-    if (End < text().size() && isHexFloatingPointPrefix(text()[End])) {
-      IsFloatingPoint = true;
-      ++End;
-    }
-    const std::size_t DigitsBegin = End;
-    while (End < text().size() && isASCIIHexDigit(text()[End]))
-      ++End;
-    if (End == DigitsBegin)
-      return std::nullopt;
-
-    const std::size_t Begin = Offset;
-    Offset = End;
-    return token(IsFloatingPoint ? MITokenKind::FloatingPointLiteral : MITokenKind::HexLiteral,
-                 Begin, Offset);
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexNumericalLiteral() {
-    if (!isASCIIDigit(peek()) && (peek() != '-' || !isASCIIDigit(peek(1)))) {
-      return std::nullopt;
-    }
-
-    const std::size_t Begin = Offset;
-    if (peek() == '-')
-      ++Offset;
-    while (!atEnd() && isASCIIDigit(peek()))
-      ++Offset;
-
-    if (peek() != '.') {
-      return token(MITokenKind::IntegerLiteral, Begin, Offset, slice(Begin, Offset));
-    }
-
-    ++Offset;
-    while (!atEnd() && isASCIIDigit(peek()))
-      ++Offset;
-    if ((peek() == 'e' || peek() == 'E') &&
-        (isASCIIDigit(peek(1)) || ((peek(1) == '-' || peek(1) == '+') && isASCIIDigit(peek(2))))) {
-      ++Offset;
-      if (peek() == '-' || peek() == '+')
-        ++Offset;
-      while (!atEnd() && isASCIIDigit(peek()))
-        ++Offset;
-    }
-    return token(MITokenKind::FloatingPointLiteral, Begin, Offset);
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexExclaim() {
-    if (peek() != '!')
-      return std::nullopt;
-
-    const std::size_t Begin = Offset++;
-    if (isASCIIDigit(peek()) || !isIdentifierCharacter(peek()))
-      return token(MITokenKind::Exclaim, Begin, Offset);
-
-    while (!atEnd() && isIdentifierCharacter(peek()))
-      ++Offset;
-    const std::string_view Spelling = slice(Begin, Offset);
-    if (!isMIMetadataKeyword(Spelling)) {
-      return fail(Begin, Offset, "use of unknown metadata keyword '" + std::string(Spelling) + "'");
-    }
-    return stringToken(MITokenKind::MetadataKeyword, Begin, Offset, Spelling);
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexSymbol() {
-    const std::size_t Begin = Offset;
-    if (startsWith("::")) {
-      Offset += 2;
-      return token(MITokenKind::DoubleColon, Begin, Offset);
-    }
-
-    MITokenKind Kind = MITokenKind::Error;
-    switch (peek()) {
-    case ',':
-      Kind = MITokenKind::Comma;
-      break;
-    case '=':
-      Kind = MITokenKind::Equal;
-      break;
-    case ':':
-      Kind = MITokenKind::Colon;
-      break;
-    case '.':
-      Kind = MITokenKind::Dot;
-      break;
-    case '(':
-      Kind = MITokenKind::LeftParen;
-      break;
-    case ')':
-      Kind = MITokenKind::RightParen;
-      break;
-    case '{':
-      Kind = MITokenKind::LeftBrace;
-      break;
-    case '}':
-      Kind = MITokenKind::RightBrace;
-      break;
-    case '+':
-      Kind = MITokenKind::Plus;
-      break;
-    case '-':
-      Kind = MITokenKind::Minus;
-      break;
-    case '<':
-      Kind = MITokenKind::Less;
-      break;
-    case '>':
-      Kind = MITokenKind::Greater;
-      break;
-    default:
-      return std::nullopt;
-    }
-    ++Offset;
-    return token(Kind, Begin, Offset);
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexNewline() {
-    if (!isNewlineCharacter(peek()))
-      return std::nullopt;
-    const std::size_t Begin = Offset++;
-    if (text()[Begin] == '\r' && peek() == '\n')
-      ++Offset;
-    return token(MITokenKind::Newline, Begin, Offset);
-  }
-
-  [[nodiscard]] std::optional<MIToken> lexQuotedIRValue() {
-    if (peek() != '`')
-      return std::nullopt;
-
-    const std::size_t Begin = Offset++;
-    const std::size_t ValueBegin = Offset;
-    while (!atEnd() && peek() != '`' && !isNewlineCharacter(peek()))
-      ++Offset;
-    if (atEnd() || isNewlineCharacter(peek())) {
-      return fail(Begin, Offset, "end of machine instruction reached before the closing '`'");
-    }
-    const std::size_t ValueEnd = Offset++;
-    return stringToken(MITokenKind::QuotedIRValue, Begin, Offset, slice(ValueBegin, ValueEnd));
-  }
-
-  [[nodiscard]] MIToken lexToken() {
-    if (auto Result = lexMachineBasicBlock())
-      return std::move(*Result);
-    if (auto Result = lexFloatHexBits())
-      return std::move(*Result);
-
-    if (isASCIIAlpha(peek()) || peek() == '_') {
-      const std::size_t Begin = Offset;
-      while (!atEnd() && isIdentifierCharacter(peek()))
-        ++Offset;
-      const std::string_view Value = slice(Begin, Offset);
-      if (Value == "_")
-        return token(MITokenKind::Underscore, Begin, Offset);
-      return stringToken(isMIKeyword(Value) ? MITokenKind::Keyword : MITokenKind::Identifier, Begin,
-                         Offset, Value);
-    }
-
-    if (auto Result = lexIndex("%jump-table.", MITokenKind::JumpTableIndex, false))
-      return std::move(*Result);
-    if (auto Result = lexIndex("%stack.", MITokenKind::StackObject, true))
-      return std::move(*Result);
-    if (auto Result = lexIndex("%fixed-stack.", MITokenKind::FixedStackObject, false))
-      return std::move(*Result);
-    if (auto Result = lexIndex("%const.", MITokenKind::ConstantPoolItem, false))
-      return std::move(*Result);
-    if (startsWith("%subreg."))
-      return lexName(MITokenKind::SubRegisterIndex, 8);
-    if (auto Result = lexIRReference("%ir-block.", MITokenKind::IRBlock, MITokenKind::NamedIRBlock))
-      return std::move(*Result);
-    if (auto Result = lexIRReference("%ir.", MITokenKind::IRValue, MITokenKind::NamedIRValue))
-      return std::move(*Result);
-    if (auto Result = lexRegister())
-      return std::move(*Result);
-    if (auto Result = lexGlobalValue())
-      return std::move(*Result);
-    if (peek() == '&')
-      return lexName(MITokenKind::ExternalSymbol, 1);
-    if (auto Result = lexMCSymbol())
-      return std::move(*Result);
-    if (auto Result = lexHexadecimalLiteral())
-      return std::move(*Result);
-    if (auto Result = lexNumericalLiteral())
-      return std::move(*Result);
-    if (auto Result = lexExclaim())
-      return std::move(*Result);
-    if (auto Result = lexSymbol())
-      return std::move(*Result);
-    if (auto Result = lexNewline())
-      return std::move(*Result);
-    if (auto Result = lexQuotedIRValue())
-      return std::move(*Result);
-    if (peek() == '"')
-      return lexName(MITokenKind::StringConstant, 0);
-
-    const std::size_t Begin = Offset++;
-    return fail(Begin, Offset,
-                unexpectedCharacterMessage(static_cast<unsigned char>(text()[Begin])));
-  }
-
-  TextSource Source;
-  MILexerOptions Options;
-  std::size_t Offset = 0;
-  std::size_t TokenCount = 0;
-  bool Failed = false;
-  std::vector<TextDiagnostic> Diagnostics;
-};
-
-MILexer::MILexer(std::string SourceName, std::string SourceText, MILexerOptions Options)
-    : Implementation(
-          std::make_unique<Impl>(std::move(SourceName), std::move(SourceText), Options)) {}
-
-MILexer::MILexer(MILexer &&) noexcept = default;
-MILexer &MILexer::operator=(MILexer &&) noexcept = default;
-MILexer::~MILexer() = default;
-
-MIToken MILexer::next() {
-  assert(Implementation != nullptr);
-  return Implementation->next();
-}
-
-const TextSource &MILexer::source() const noexcept {
-  assert(Implementation != nullptr);
-  return Implementation->source();
-}
-
-std::span<const TextDiagnostic> MILexer::diagnostics() const noexcept {
-  assert(Implementation != nullptr);
-  return Implementation->diagnostics();
-}
-
-bool MILexer::failed() const noexcept {
-  assert(Implementation != nullptr);
-  return Implementation->failed();
-}
-
-std::size_t MILexer::tokenCount() const noexcept {
-  assert(Implementation != nullptr);
-  return Implementation->tokenCount();
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIParser.cpp b/backend/lib/MIR/MIParser.cpp
deleted file mode 100644
index 3748187..0000000
--- a/backend/lib/MIR/MIParser.cpp
+++ /dev/null
@@ -1,2967 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "rcc/MIR/MIParser.h"
-
-#include "rcc/CodeGen/GenericOpcodes.h"
-#include "rcc/CodeGen/InlineAsm.h"
-#include "rcc/CodeGen/InstructionDescriptor.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineCFGUpdater.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineOperand.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/MachineVerifier.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-#include "rcc/MIR/MIDebugSyntax.h"
-#include "rcc/MIR/MILexer.h"
-
-#include <algorithm>
-#include <array>
-#include <bit>
-#include <charconv>
-#include <cmath>
-#include <cstddef>
-#include <cstdint>
-#include <cstring>
-#include <iterator>
-#include <limits>
-#include <memory>
-#include <optional>
-#include <span>
-#include <string>
-#include <string_view>
-#include <system_error>
-#include <unordered_map>
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-namespace {
-
-[[nodiscard]] bool parseUnsignedDecimal(std::string_view Spelling, std::uint64_t &Value) {
-  if (Spelling.empty() || Spelling.front() == '-')
-    return false;
-  const char *Begin = Spelling.data();
-  const char *End = Begin + Spelling.size();
-  const auto Result = std::from_chars(Begin, End, Value, 10);
-  return Result.ec == std::errc{} && Result.ptr == End;
-}
-
-[[nodiscard]] bool parseSignedDecimal(std::string_view Spelling, std::int64_t &Value) {
-  if (Spelling.empty())
-    return false;
-  const char *Begin = Spelling.data();
-  const char *End = Begin + Spelling.size();
-  const auto Result = std::from_chars(Begin, End, Value, 10);
-  return Result.ec == std::errc{} && Result.ptr == End;
-}
-
-[[nodiscard]] bool parseHexadecimal(std::string_view Spelling, std::uint64_t &Value) {
-  if (Spelling.size() < 3 || Spelling[0] != '0' || (Spelling[1] != 'x' && Spelling[1] != 'X'))
-    return false;
-  const char *Begin = Spelling.data() + 2;
-  const char *End = Spelling.data() + Spelling.size();
-  const auto Result = std::from_chars(Begin, End, Value, 16);
-  return Result.ec == std::errc{} && Result.ptr == End;
-}
-
-[[nodiscard]] bool parseUnsignedDigits(std::string_view Spelling, std::uint64_t &Value) {
-  if (Spelling.empty())
-    return false;
-  const char *Begin = Spelling.data();
-  const char *End = Begin + Spelling.size();
-  const auto Result = std::from_chars(Begin, End, Value, 10);
-  return Result.ec == std::errc{} && Result.ptr == End;
-}
-
-[[nodiscard]] std::optional<FloatSemantics> floatSemanticsForKeyword(std::string_view Keyword) {
-  if (Keyword == "half")
-    return FloatSemantics::IEEEHalf;
-  if (Keyword == "bfloat")
-    return FloatSemantics::BFloat;
-  if (Keyword == "float")
-    return FloatSemantics::IEEESingle;
-  if (Keyword == "double")
-    return FloatSemantics::IEEEDouble;
-  if (Keyword == "x86_fp80")
-    return FloatSemantics::X87DoubleExtended;
-  if (Keyword == "fp128")
-    return FloatSemantics::IEEEQuad;
-  if (Keyword == "ppc_fp128")
-    return FloatSemantics::PPCDoubleDouble;
-  return std::nullopt;
-}
-
-[[nodiscard]] bool isFloatingSemanticsKeyword(const MIToken &Token) {
-  return Token.kind() == MITokenKind::Keyword &&
-         floatSemanticsForKeyword(Token.stringValue()).has_value();
-}
-
-[[nodiscard]] bool isCFIOperationToken(const MIToken &Token) {
-  return Token.isKeyword("same_value") || Token.isKeyword("remember_state") ||
-         Token.isKeyword("restore_state") || Token.isKeyword("offset") ||
-         Token.isKeyword("llvm_def_aspace_cfa") || Token.isKeyword("def_cfa_register") ||
-         Token.isKeyword("def_cfa_offset") || Token.isKeyword("def_cfa") ||
-         Token.isKeyword("rel_offset") || Token.isKeyword("adjust_cfa_offset") ||
-         Token.isKeyword("escape") || Token.isKeyword("restore") || Token.isKeyword("undefined") ||
-         Token.isKeyword("register") || Token.isKeyword("window_save") ||
-         Token.isKeyword("negate_ra_sign_state") ||
-         Token.isKeyword("negate_ra_sign_state_with_pc") || Token.isKeyword("llvm_register_pair") ||
-         Token.isKeyword("llvm_vector_registers") || Token.isKeyword("llvm_vector_offset") ||
-         Token.isKeyword("llvm_vector_register_mask");
-}
-
-[[nodiscard]] Expected<IntegerImmediate> parseIntegerImmediateValue(std::uint32_t BitWidth,
-                                                                    std::string_view Spelling) {
-  if (BitWidth == 0 || BitWidth > IntegerImmediate::MaxBitWidth)
-    return makeUnexpected(ErrorCode::ParseError, "typed integer width is out of range");
-
-  const bool Negative = Spelling.starts_with('-');
-  if (Negative)
-    Spelling.remove_prefix(1);
-  if (Spelling.empty())
-    return makeUnexpected(ErrorCode::ParseError, "typed integer has no digits");
-
-  std::vector<std::uint64_t> Words((static_cast<std::size_t>(BitWidth) + 63U) / 64U, 0);
-  for (char Character : Spelling) {
-    if (Character < '0' || Character > '9')
-      return makeUnexpected(ErrorCode::ParseError, "typed integer contains a non-decimal digit");
-    std::uint64_t Carry = static_cast<unsigned>(Character - '0');
-    for (std::uint64_t &Word : Words) {
-      const unsigned __int128 Product = static_cast<unsigned __int128>(Word) * 10U + Carry;
-      Word = static_cast<std::uint64_t>(Product);
-      Carry = static_cast<std::uint64_t>(Product >> 64U);
-    }
-  }
-
-  // LLVM parses the arbitrary-precision literal first and then truncates it to
-  // the declared integer width.  Keep exactly that modulo-2^N bit pattern.
-  if (BitWidth % 64U != 0)
-    Words.back() &= (std::uint64_t{1} << (BitWidth % 64U)) - 1U;
-  if (Negative) {
-    for (std::uint64_t &Word : Words)
-      Word = ~Word;
-    std::uint64_t Carry = 1;
-    for (std::uint64_t &Word : Words) {
-      const std::uint64_t Previous = Word;
-      Word += Carry;
-      Carry = Carry != 0 && Word < Previous ? 1 : 0;
-    }
-    if (BitWidth % 64U != 0)
-      Words.back() &= (std::uint64_t{1} << (BitWidth % 64U)) - 1U;
-  }
-  return IntegerImmediate::create(BitWidth, Words);
-}
-
-[[nodiscard]] std::optional<std::uint64_t> minimumTypeSizeInBits(LLT Type) noexcept {
-  if (!Type.isValid() || Type.isToken())
-    return std::nullopt;
-  const std::uint64_t ScalarSize = Type.scalarBitWidth();
-  if (!Type.isVector())
-    return ScalarSize;
-  const std::uint64_t ElementCount = Type.minimumElementCount();
-  if (ScalarSize != 0 && ElementCount > std::numeric_limits<std::uint64_t>::max() / ScalarSize)
-    return std::nullopt;
-  return ScalarSize * ElementCount;
-}
-
-[[nodiscard]] std::optional<AtomicOrdering> atomicOrdering(std::string_view Name) noexcept {
-  if (Name == "unordered")
-    return AtomicOrdering::Unordered;
-  if (Name == "monotonic")
-    return AtomicOrdering::Monotonic;
-  if (Name == "acquire")
-    return AtomicOrdering::Acquire;
-  if (Name == "release")
-    return AtomicOrdering::Release;
-  if (Name == "acq_rel")
-    return AtomicOrdering::AcquireRelease;
-  if (Name == "seq_cst")
-    return AtomicOrdering::SequentiallyConsistent;
-  return std::nullopt;
-}
-
-[[nodiscard]] bool isInstructionFlag(const MIToken &Token) {
-  return Token.isKeyword("frame-setup") || Token.isKeyword("frame-destroy") ||
-         Token.isKeyword("nnan") || Token.isKeyword("ninf") || Token.isKeyword("nsz") ||
-         Token.isKeyword("arcp") || Token.isKeyword("contract") || Token.isKeyword("afn") ||
-         Token.isKeyword("reassoc") || Token.isKeyword("nuw") || Token.isKeyword("nsw") ||
-         Token.isKeyword("nusw") || Token.isKeyword("exact") || Token.isKeyword("nofpexcept") ||
-         Token.isKeyword("unpredictable") || Token.isKeyword("noconvergent") ||
-         Token.isKeyword("nneg") || Token.isKeyword("disjoint") || Token.isKeyword("samesign") ||
-         Token.isKeyword("inbounds");
-}
-
-[[nodiscard]] std::optional<MachineInstrFlag> instructionFlag(std::string_view Name) {
-  if (Name == "frame-setup")
-    return MachineInstrFlag::FrameSetup;
-  if (Name == "frame-destroy")
-    return MachineInstrFlag::FrameDestroy;
-  if (Name == "nnan")
-    return MachineInstrFlag::FastMathNoNaNs;
-  if (Name == "ninf")
-    return MachineInstrFlag::FastMathNoInfs;
-  if (Name == "nsz")
-    return MachineInstrFlag::FastMathNoSignedZeros;
-  if (Name == "arcp")
-    return MachineInstrFlag::FastMathAllowReciprocal;
-  if (Name == "contract")
-    return MachineInstrFlag::FastMathAllowContract;
-  if (Name == "afn")
-    return MachineInstrFlag::FastMathApproxFunc;
-  if (Name == "reassoc")
-    return MachineInstrFlag::FastMathAllowReassoc;
-  if (Name == "nuw")
-    return MachineInstrFlag::NoUnsignedWrap;
-  if (Name == "nsw")
-    return MachineInstrFlag::NoSignedWrap;
-  if (Name == "nusw")
-    return MachineInstrFlag::NoUSWrap;
-  if (Name == "exact")
-    return MachineInstrFlag::Exact;
-  if (Name == "nofpexcept")
-    return MachineInstrFlag::NoFPExcept;
-  if (Name == "unpredictable")
-    return MachineInstrFlag::Unpredictable;
-  if (Name == "noconvergent")
-    return MachineInstrFlag::NoConvergent;
-  if (Name == "nneg")
-    return MachineInstrFlag::NonNeg;
-  if (Name == "disjoint")
-    return MachineInstrFlag::Disjoint;
-  if (Name == "samesign")
-    return MachineInstrFlag::SameSign;
-  if (Name == "inbounds")
-    return MachineInstrFlag::InBounds;
-  return std::nullopt;
-}
-
-[[nodiscard]] std::optional<IntegerPredicate> integerPredicate(std::string_view Name) {
-  if (Name == "eq")
-    return IntegerPredicate::Equal;
-  if (Name == "ne")
-    return IntegerPredicate::NotEqual;
-  if (Name == "sgt")
-    return IntegerPredicate::SignedGreaterThan;
-  if (Name == "sge")
-    return IntegerPredicate::SignedGreaterEqual;
-  if (Name == "slt")
-    return IntegerPredicate::SignedLessThan;
-  if (Name == "sle")
-    return IntegerPredicate::SignedLessEqual;
-  if (Name == "ugt")
-    return IntegerPredicate::UnsignedGreaterThan;
-  if (Name == "uge")
-    return IntegerPredicate::UnsignedGreaterEqual;
-  if (Name == "ult")
-    return IntegerPredicate::UnsignedLessThan;
-  if (Name == "ule")
-    return IntegerPredicate::UnsignedLessEqual;
-  return std::nullopt;
-}
-
-[[nodiscard]] std::optional<FloatingPredicate> floatingPredicate(std::string_view Name) {
-  if (Name == "false")
-    return FloatingPredicate::AlwaysFalse;
-  if (Name == "oeq")
-    return FloatingPredicate::OrderedEqual;
-  if (Name == "ogt")
-    return FloatingPredicate::OrderedGreaterThan;
-  if (Name == "oge")
-    return FloatingPredicate::OrderedGreaterEqual;
-  if (Name == "olt")
-    return FloatingPredicate::OrderedLessThan;
-  if (Name == "ole")
-    return FloatingPredicate::OrderedLessEqual;
-  if (Name == "one")
-    return FloatingPredicate::OrderedNotEqual;
-  if (Name == "ord")
-    return FloatingPredicate::Ordered;
-  if (Name == "uno")
-    return FloatingPredicate::Unordered;
-  if (Name == "ueq")
-    return FloatingPredicate::UnorderedEqual;
-  if (Name == "ugt")
-    return FloatingPredicate::UnorderedGreaterThan;
-  if (Name == "uge")
-    return FloatingPredicate::UnorderedGreaterEqual;
-  if (Name == "ult")
-    return FloatingPredicate::UnorderedLessThan;
-  if (Name == "ule")
-    return FloatingPredicate::UnorderedLessEqual;
-  if (Name == "une")
-    return FloatingPredicate::UnorderedNotEqual;
-  if (Name == "true")
-    return FloatingPredicate::AlwaysTrue;
-  return std::nullopt;
-}
-
-} // namespace
-
-class MIParser::Impl final {
-public:
-  Impl(MachineFunction &Function, const TargetDescription &Target, std::string SourceName,
-       std::string SourceText, MIParserContext Context, MIParserOptions Options)
-      : Function(Function), Target(Target),
-        Lexer(std::move(SourceName), std::move(SourceText),
-              MILexerOptions{.MaximumTokenLength = Options.MaximumTokenLength,
-                             .MaximumTokens = Options.MaximumTokens}),
-        Context(std::move(Context)), Options(Options) {}
-
-  [[nodiscard]] Expected<void> parse();
-
-  [[nodiscard]] const TextSource &source() const noexcept {
-    return Lexer.source();
-  }
-
-  [[nodiscard]] std::span<const TextDiagnostic> diagnostics() const noexcept {
-    return Diagnostics;
-  }
-
-  [[nodiscard]] bool failed() const noexcept {
-    return !Diagnostics.empty();
-  }
-
-private:
-  struct ParsedOperand final {
-    MachineOperand Operand;
-    std::optional<std::size_t> TiedDef;
-    TextRange Range;
-  };
-
-  [[nodiscard]] const MIToken &token() const noexcept {
-    return Tokens[Position];
-  }
-
-  [[nodiscard]] bool at(MITokenKind Kind) const noexcept {
-    return token().is(Kind);
-  }
-
-  [[nodiscard]] bool nextIs(MITokenKind Kind) const noexcept {
-    return Position + 1U < Tokens.size() && Tokens[Position + 1U].is(Kind);
-  }
-
-  [[nodiscard]] bool atKeyword(std::string_view Keyword) const noexcept {
-    return token().isKeyword(Keyword);
-  }
-
-  void advance() noexcept {
-    if (!at(MITokenKind::EndOfFile))
-      ++Position;
-  }
-
-  [[nodiscard]] bool consume(MITokenKind Kind) noexcept {
-    if (!at(Kind))
-      return false;
-    advance();
-    return true;
-  }
-
-  [[nodiscard]] bool expect(MITokenKind Kind, std::string_view Description);
-  [[nodiscard]] bool fail(const MIToken &At, std::string Message);
-  [[nodiscard]] bool fail(std::string Message) {
-    return fail(token(), std::move(Message));
-  }
-  [[nodiscard]] Expected<void> failureResult() const;
-  [[nodiscard]] bool importError(const MIToken &At, const Error &Failure);
-  [[nodiscard]] bool tokenize();
-
-  [[nodiscard]] bool parseUnsigned(const MIToken &Token, std::uint64_t &Value);
-  [[nodiscard]] bool parseUnsigned32(const MIToken &Token, std::uint32_t &Value);
-  [[nodiscard]] bool parseSigned64(const MIToken &Token, std::int64_t &Value);
-  [[nodiscard]] bool parseOptionalOffset(std::int64_t &Offset);
-  [[nodiscard]] bool parseAlignment(Alignment &Result);
-  [[nodiscard]] bool parseLowLevelType(LLT &Result);
-  [[nodiscard]] bool parseScalarLowLevelType(const MIToken &Token, LLT &Result);
-
-  [[nodiscard]] bool parseFirstPass();
-  [[nodiscard]] bool parseSecondPass();
-  [[nodiscard]] bool parseBlockDefinition(bool Create, std::uint32_t &ID);
-  [[nodiscard]] bool parseBlockAttributes(MachineBasicBlock *Block);
-  [[nodiscard]] bool parseBlockLiveIns(MachineBasicBlock &Block);
-  [[nodiscard]] bool parseBlockSuccessors(MachineBasicBlock &Block);
-  [[nodiscard]] bool parseInstruction(MachineBasicBlock &Block, bool InBundle,
-                                      MachineInstr *PreviousInstruction, MachineInstr *&Result);
-  [[nodiscard]] bool inferSuccessors();
-
-  [[nodiscard]] bool parseRegister(Register &Result);
-  [[nodiscard]] bool parseRegisterOperand(bool IsDef, ParsedOperand &Result);
-  [[nodiscard]] bool parseTargetFlags(std::uint32_t &Flags);
-  [[nodiscard]] bool parseOperand(bool IsDef, ParsedOperand &Result);
-  [[nodiscard]] bool parseInlineAsmExtraInfoOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseInlineAsmOperandFlag(ParsedOperand &Result);
-  [[nodiscard]] bool parseTypedIntegerOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseFloatingImmediateOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseMetadataReference(MachineMetadataReference &Result);
-  [[nodiscard]] bool parseMetadataOperand(ParsedOperand &Result);
-  [[nodiscard]] bool
-  parseInlineDILocation(std::vector<MachineDILocationFrame> &InlineChain,
-                        std::optional<MachineMetadataReference> &TerminalInlinedAt);
-  [[nodiscard]] bool parseCFIRegister(DwarfRegisterNumber &Result);
-  [[nodiscard]] bool parseCFISigned(std::int64_t &Result);
-  [[nodiscard]] bool parseCFIUnsigned(std::uint32_t &Result);
-  [[nodiscard]] bool parseCFIOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseMemoryBase(MemoryBase &Result, std::int64_t &Offset);
-  [[nodiscard]] bool parseMemoryOperand(const MachineMemOperand *&Result, Opcode InstructionOpcode);
-  [[nodiscard]] bool parsePredicateOperand(ParsedOperand &Result, bool IsFloating);
-  [[nodiscard]] bool parseShuffleMaskOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseDebugInstrRefOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseLaneMaskOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseIntrinsicOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseTargetIndexOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseLiveOutMaskOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseCustomMaskOperand(ParsedOperand &Result);
-  [[nodiscard]] bool parseBlockAddressOperand(ParsedOperand &Result);
-
-  [[nodiscard]] Register getOrCreateVirtualRegister(const MIToken &Token);
-  [[nodiscard]] MachineBasicBlock *blockFor(const MIToken &Token);
-  [[nodiscard]] std::optional<FrameIndex> frameIndexFor(const MIToken &Token, bool Fixed);
-  [[nodiscard]] std::optional<ConstantPoolIndex> constantPoolIndexFor(const MIToken &Token);
-  [[nodiscard]] std::optional<JumpTableIndex> jumpTableIndexFor(const MIToken &Token);
-  [[nodiscard]] std::string symbolName(const MIToken &Token) const;
-
-  MachineFunction &Function;
-  const TargetDescription &Target;
-  MILexer Lexer;
-  MIParserContext Context;
-  MIParserOptions Options;
-  std::vector<MIToken> Tokens;
-  std::size_t Position = 0;
-  std::vector<TextDiagnostic> Diagnostics;
-  std::unordered_map<std::uint32_t, MachineBasicBlock *> Blocks;
-  std::unordered_map<std::uint32_t, Register> NumericVirtualRegisters;
-  std::unordered_map<std::string, Register> NamedVirtualRegisters;
-  std::unordered_set<MachineBasicBlock *> ExplicitSuccessorBlocks;
-  std::size_t ParsedInstructionCount = 0;
-  bool ParseAttempted = false;
-};
-
-bool MIParser::Impl::expect(MITokenKind Kind, std::string_view Description) {
-  if (consume(Kind))
-    return false;
-  return fail("expected " + std::string(Description) + ", found " +
-              std::string(getMITokenKindName(token().kind())));
-}
-
-bool MIParser::Impl::fail(const MIToken &At, std::string Message) {
-  if (Diagnostics.empty()) {
-    Diagnostics.push_back(TextDiagnostic{
-        .Severity = DiagnosticSeverity::Error,
-        .Category = "mir-parser",
-        .Message = std::move(Message),
-        .SourceName = std::string(Lexer.source().name()),
-        .Range = At.range(),
-    });
-  }
-  return true;
-}
-
-Expected<void> MIParser::Impl::failureResult() const {
-  const std::string Message =
-      Diagnostics.empty() ? "machine instruction parsing failed" : Diagnostics.front().Message;
-  return makeUnexpected(ErrorCode::ParseError, Message);
-}
-
-bool MIParser::Impl::importError(const MIToken &At, const Error &Failure) {
-  return fail(At, std::string(Failure.message()));
-}
-
-bool MIParser::Impl::tokenize() {
-  while (true) {
-    MIToken Token = Lexer.next();
-    const MITokenKind Kind = Token.kind();
-    Tokens.push_back(std::move(Token));
-    if (Kind == MITokenKind::Error) {
-      const auto LexerDiagnostics = Lexer.diagnostics();
-      Diagnostics.assign(LexerDiagnostics.begin(), LexerDiagnostics.end());
-      return true;
-    }
-    if (Kind == MITokenKind::EndOfFile)
-      return false;
-  }
-}
-
-bool MIParser::Impl::parseUnsigned(const MIToken &Token, std::uint64_t &Value) {
-  if (Token.kind() == MITokenKind::HexLiteral)
-    return !parseHexadecimal(Token.spelling(), Value);
-  if (Token.hasIntegerValue())
-    return !parseUnsignedDecimal(Token.integerValue(), Value);
-  return true;
-}
-
-bool MIParser::Impl::parseUnsigned32(const MIToken &Token, std::uint32_t &Value) {
-  std::uint64_t Wide = 0;
-  if (parseUnsigned(Token, Wide) || Wide > std::numeric_limits<std::uint32_t>::max())
-    return true;
-  Value = static_cast<std::uint32_t>(Wide);
-  return false;
-}
-
-bool MIParser::Impl::parseSigned64(const MIToken &Token, std::int64_t &Value) {
-  if (Token.kind() != MITokenKind::IntegerLiteral)
-    return true;
-  if (parseSignedDecimal(Token.integerValue(), Value))
-    return false;
-  std::uint64_t Unsigned = 0;
-  if (!parseUnsignedDecimal(Token.integerValue(), Unsigned))
-    return true;
-  Value = std::bit_cast<std::int64_t>(Unsigned);
-  return false;
-}
-
-bool MIParser::Impl::parseOptionalOffset(std::int64_t &Offset) {
-  Offset = 0;
-  if (!at(MITokenKind::Plus) && !at(MITokenKind::Minus))
-    return false;
-  const bool Negative = at(MITokenKind::Minus);
-  advance();
-  std::uint64_t Magnitude = 0;
-  if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), Magnitude) ||
-      Magnitude > (std::uint64_t{1} << 63U)) {
-    return fail("expected a 64-bit integer offset");
-  }
-  if (Negative) {
-    if (Magnitude == (std::uint64_t{1} << 63U))
-      Offset = std::numeric_limits<std::int64_t>::min();
-    else
-      Offset = -static_cast<std::int64_t>(Magnitude);
-  } else {
-    if (Magnitude > static_cast<std::uint64_t>(std::numeric_limits<std::int64_t>::max()))
-      return fail("positive offset exceeds signed 64-bit range");
-    Offset = static_cast<std::int64_t>(Magnitude);
-  }
-  advance();
-  return false;
-}
-
-bool MIParser::Impl::parseAlignment(Alignment &Result) {
-  advance();
-  std::uint64_t Bytes = 0;
-  if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), Bytes))
-    return fail("expected an unsigned alignment");
-  auto Parsed = Alignment::create(Bytes);
-  if (!Parsed)
-    return importError(token(), Parsed.error());
-  Result = *Parsed;
-  advance();
-  return false;
-}
-
-bool MIParser::Impl::parseScalarLowLevelType(const MIToken &TypeToken, LLT &Result) {
-  if (TypeToken.kind() != MITokenKind::Identifier)
-    return fail(TypeToken, "expected a scalar low-level type");
-  std::string_view Spelling = TypeToken.stringValue();
-  enum class ScalarKind : std::uint8_t {
-    Any,
-    Integer,
-    Float,
-    BFloat,
-    Pointer,
-  };
-  ScalarKind Kind = ScalarKind::Any;
-  std::string_view Digits;
-  if (Spelling.starts_with("bf")) {
-    Kind = ScalarKind::BFloat;
-    Digits = Spelling.substr(2);
-  } else if (Spelling.starts_with('s')) {
-    Kind = ScalarKind::Any;
-    Digits = Spelling.substr(1);
-  } else if (Spelling.starts_with('i')) {
-    Kind = ScalarKind::Integer;
-    Digits = Spelling.substr(1);
-  } else if (Spelling.starts_with('f')) {
-    Kind = ScalarKind::Float;
-    Digits = Spelling.substr(1);
-  } else if (Spelling.starts_with('p')) {
-    Kind = ScalarKind::Pointer;
-    Digits = Spelling.substr(1);
-  } else {
-    return fail(TypeToken, "unknown scalar low-level type '" + std::string(Spelling) + "'");
-  }
-
-  std::uint64_t Value = 0;
-  if (!parseUnsignedDigits(Digits, Value))
-    return fail(TypeToken, "expected integers after 's'/'i'/'f'/'bf'/'p' type identifier");
-
-  Expected<LLT> Created = makeUnexpected(ErrorCode::ParseError, "invalid low-level type");
-  switch (Kind) {
-  case ScalarKind::Any:
-    if (Value == 0) {
-      Result = LLT::token();
-      return false;
-    }
-    Created = LLT::makeAnyScalar(Value);
-    break;
-  case ScalarKind::Integer:
-    Created = LLT::makeInteger(Value);
-    break;
-  case ScalarKind::Float: {
-    std::optional<FloatSemantics> Semantics;
-    if (Value == 16)
-      Semantics = FloatSemantics::IEEEHalf;
-    else if (Value == 32)
-      Semantics = FloatSemantics::IEEESingle;
-    else if (Value == 64)
-      Semantics = FloatSemantics::IEEEDouble;
-    else if (Value == 128)
-      Semantics = FloatSemantics::IEEEQuad;
-    if (!Semantics)
-      return fail(TypeToken, "unsupported IEEE floating low-level type width");
-    Created = LLT::makeFloat(*Semantics);
-    break;
-  }
-  case ScalarKind::BFloat:
-    if (Value != 16)
-      return fail(TypeToken, "bfloat low-level type must have width 16");
-    Created = LLT::makeFloat(FloatSemantics::BFloat);
-    break;
-  case ScalarKind::Pointer:
-    if (!Context.PointerSizeInBits)
-      return fail(TypeToken, "pointer low-level type requires an explicit pointer size");
-    if (auto PointerSize = Context.PointerSizeInBits(static_cast<std::uint32_t>(Value)))
-      Created = LLT::makePointer(Value, *PointerSize);
-    else
-      return importError(TypeToken, PointerSize.error());
-    break;
-  }
-  if (!Created)
-    return importError(TypeToken, Created.error());
-  Result = *Created;
-  return false;
-}
-
-bool MIParser::Impl::parseLowLevelType(LLT &Result) {
-  const MIToken Begin = token();
-  const auto HasScalarPrefix = [](std::string_view Spelling) {
-    return Spelling.starts_with('s') || Spelling.starts_with('i') || Spelling.starts_with('f') ||
-           Spelling.starts_with("bf") || Spelling.starts_with('p');
-  };
-  if (at(MITokenKind::Identifier)) {
-    if (!HasScalarPrefix(token().stringValue())) {
-      return fail(Begin, "expected tN, pA, <M x tN>, <M x pA>, <vscale x M x tN>, or "
-                         "<vscale x M x pA> for GlobalISel type, where t = {'s', 'i', 'f', 'bf'}");
-    }
-    if (parseScalarLowLevelType(token(), Result))
-      return true;
-    advance();
-    return false;
-  }
-  if (!consume(MITokenKind::Less)) {
-    return fail(Begin, "expected tN, pA, <M x tN>, <M x pA>, <vscale x M x tN>, or "
-                       "<vscale x M x pA> for GlobalISel type, where t = {'s', 'i', 'f', 'bf'}");
-  }
-
-  bool Scalable = false;
-  if (at(MITokenKind::Identifier) && token().stringValue() == "vscale") {
-    Scalable = true;
-    advance();
-    if (!at(MITokenKind::Identifier) || token().stringValue() != "x") {
-      return fail("expected <vscale x M x tN>, where t = {'s', 'i', 'f', 'bf', 'p'}");
-    }
-    advance();
-  }
-
-  const auto VectorError = [this, &Begin, Scalable] {
-    if (Scalable) {
-      return fail(Begin, "expected <vscale x M x tN> for vector type, where t = "
-                         "{'s', 'i', 'f', 'bf', 'p'}");
-    }
-    return fail(Begin, "expected <M x tN> for vector type, where t = {'s', 'i', 'f', 'bf', 'p'}");
-  };
-
-  std::uint64_t ElementCount = 0;
-  if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), ElementCount))
-    return VectorError();
-  advance();
-  if (!at(MITokenKind::Identifier) || token().stringValue() != "x")
-    return VectorError();
-  advance();
-
-  if (!at(MITokenKind::Identifier) || !HasScalarPrefix(token().stringValue()))
-    return VectorError();
-  LLT ElementType;
-  if (parseScalarLowLevelType(token(), ElementType))
-    return true;
-  if (ElementType.isToken())
-    return fail("token cannot be a vector element type");
-  advance();
-  if (!consume(MITokenKind::Greater))
-    return VectorError();
-
-  Expected<LLT> Created = Scalable ? LLT::makeScalableVector(ElementCount, ElementType)
-                                   : LLT::makeFixedVector(ElementCount, ElementType);
-  if (!Created)
-    return importError(Begin, Created.error());
-  Result = *Created;
-  return false;
-}
-
-bool MIParser::Impl::parseBlockAttributes(MachineBasicBlock *Block) {
-  std::unordered_set<std::string> Seen;
-  while (!at(MITokenKind::RightParen)) {
-    const MIToken AttributeToken = token();
-    if (atKeyword("machine-block-address-taken") || atKeyword("landing-pad") ||
-        atKeyword("inlineasm-br-indirect-target") || atKeyword("ehfunclet-entry") ||
-        atKeyword("ehscope-entry")) {
-      const std::string Name(AttributeToken.stringValue());
-      if (!Seen.insert(Name).second)
-        return fail("duplicate basic block attribute '" + Name + "'");
-      if (Block != nullptr) {
-        if (Name == "machine-block-address-taken")
-          Block->attributes().set(MachineBasicBlockAttribute::MachineBlockAddressTaken);
-        else if (Name == "landing-pad")
-          Block->attributes().set(MachineBasicBlockAttribute::LandingPad);
-        else if (Name == "inlineasm-br-indirect-target")
-          Block->attributes().set(MachineBasicBlockAttribute::InlineAsmBrIndirectTarget);
-        else if (Name == "ehfunclet-entry")
-          Block->attributes().set(MachineBasicBlockAttribute::EHFuncletEntry);
-        else
-          Block->attributes().set(MachineBasicBlockAttribute::EHScopeEntry);
-      }
-      advance();
-    } else if (atKeyword("ir-block-address-taken")) {
-      if (!Seen.insert("ir-block-address-taken").second)
-        return fail("duplicate basic block attribute 'ir-block-address-taken'");
-      advance();
-      if (!at(MITokenKind::IRBlock) && !at(MITokenKind::NamedIRBlock))
-        return fail("expected an IR block after 'ir-block-address-taken'");
-      if (Block != nullptr) {
-        Block->attributes().set(MachineBasicBlockAttribute::IRBlockAddressTaken);
-        auto SetName = Block->attributes().setIRBlockName(symbolName(token()));
-        if (!SetName)
-          return importError(token(), SetName.error());
-      }
-      advance();
-    } else if (at(MITokenKind::IRBlock) || at(MITokenKind::NamedIRBlock)) {
-      if (!Seen.insert("ir-block").second)
-        return fail("duplicate IR block attribute");
-      if (Context.HasIRBlock && !Context.HasIRBlock(symbolName(token())))
-        return fail(token(), "use of undefined IR block '" + std::string(token().spelling()) + "'");
-      if (Block != nullptr) {
-        auto SetName = Block->attributes().setIRBlockName(symbolName(token()));
-        if (!SetName)
-          return importError(token(), SetName.error());
-      }
-      advance();
-    } else if (atKeyword("align")) {
-      if (!Seen.insert("align").second)
-        return fail("duplicate basic block alignment");
-      Alignment Align;
-      if (parseAlignment(Align))
-        return true;
-      if (Block != nullptr)
-        Block->attributes().setAlignment(Align);
-    } else if (atKeyword("bbsections")) {
-      if (!Seen.insert("bbsections").second)
-        return fail("duplicate basic block section");
-      advance();
-      MachineBasicBlockSectionID Section;
-      std::uint32_t Number = 0;
-      if (at(MITokenKind::IntegerLiteral) && !parseUnsigned32(token(), Number))
-        Section = MachineBasicBlockSectionID::numbered(Number);
-      else if (at(MITokenKind::Identifier) && token().stringValue() == "Exception")
-        Section = MachineBasicBlockSectionID::exception();
-      else if (at(MITokenKind::Identifier) && token().stringValue() == "Cold")
-        Section = MachineBasicBlockSectionID::cold();
-      else
-        return fail("unknown basic block section ID");
-      if (Block != nullptr)
-        Block->attributes().setSectionID(Section);
-      advance();
-    } else if (atKeyword("bb_id")) {
-      if (!Seen.insert("bb_id").second)
-        return fail("duplicate basic block profile ID");
-      advance();
-      std::uint32_t BaseID = 0;
-      std::uint32_t CloneID = 0;
-      if (at(MITokenKind::FloatingPointLiteral)) {
-        const std::string_view Spelling = token().spelling();
-        const std::size_t Dot = Spelling.find('.');
-        std::uint64_t Base = 0;
-        std::uint64_t Clone = 0;
-        if (Dot == std::string_view::npos || !parseUnsignedDecimal(Spelling.substr(0, Dot), Base) ||
-            !parseUnsignedDecimal(Spelling.substr(Dot + 1), Clone) ||
-            Base > std::numeric_limits<std::uint32_t>::max() ||
-            Clone > std::numeric_limits<std::uint32_t>::max()) {
-          return fail("invalid basic block profile ID");
-        }
-        BaseID = static_cast<std::uint32_t>(Base);
-        CloneID = static_cast<std::uint32_t>(Clone);
-        advance();
-      } else {
-        if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), BaseID))
-          return fail("invalid basic block base ID");
-        advance();
-        if (consume(MITokenKind::Dot) || consume(MITokenKind::Comma)) {
-          if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), CloneID))
-            return fail("invalid basic block clone ID");
-          advance();
-        }
-      }
-      if (Block != nullptr)
-        Block->attributes().setProfileID({BaseID, CloneID});
-    } else if (atKeyword("call-frame-size")) {
-      if (!Seen.insert("call-frame-size").second)
-        return fail("duplicate basic block call frame size");
-      advance();
-      std::uint32_t Size = 0;
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), Size))
-        return fail("invalid basic block call frame size");
-      if (Block != nullptr)
-        Block->attributes().setCallFrameSize(Size);
-      advance();
-    } else {
-      return fail("unknown basic block attribute '" + std::string(token().spelling()) + "'");
-    }
-
-    if (!consume(MITokenKind::Comma))
-      break;
-  }
-  return expect(MITokenKind::RightParen, "')'");
-}
-
-bool MIParser::Impl::parseBlockDefinition(bool Create, std::uint32_t &ID) {
-  const MIToken Label = token();
-  if (!at(MITokenKind::MachineBasicBlockLabel) || parseUnsigned32(Label, ID))
-    return fail("invalid machine basic block label");
-  advance();
-
-  MachineBasicBlock *Block = nullptr;
-  if (Create) {
-    if (Blocks.size() >= Options.MaximumBlocks)
-      return fail(Label, "machine basic block count exceeds parser limit");
-    if (Blocks.contains(ID))
-      return fail(Label, "redefinition of machine basic block with id #" + std::to_string(ID));
-    if (!Label.stringValue().empty() && Context.HasIRBlock &&
-        !Context.HasIRBlock(Label.stringValue())) {
-      return fail(Label, "basic block '" + std::string(Label.stringValue()) +
-                             "' is not defined in the function '" + std::string(Function.name()) +
-                             "'");
-    }
-    auto Created = Function.createBasicBlock();
-    if (!Created)
-      return importError(Label, Created.error());
-    Block = *Created;
-    auto Appended = Function.appendBlock(*Block);
-    if (!Appended)
-      return importError(Label, Appended.error());
-    if (!Label.stringValue().empty()) {
-      auto SetName = Block->attributes().setName(std::string(Label.stringValue()));
-      if (!SetName)
-        return importError(Label, SetName.error());
-    }
-    Blocks.emplace(ID, Block);
-  } else {
-    const auto Found = Blocks.find(ID);
-    if (Found == Blocks.end())
-      return fail(Label, "use of undefined machine basic block #" + std::to_string(ID));
-    Block = Found->second;
-  }
-
-  if (consume(MITokenKind::LeftParen) && parseBlockAttributes(Create ? Block : nullptr))
-    return true;
-  return expect(MITokenKind::Colon, "':' after the basic block definition");
-}
-
-bool MIParser::Impl::parseFirstPass() {
-  Position = 0;
-  bool AtLineStart = true;
-  std::size_t BraceDepth = 0;
-  while (!at(MITokenKind::EndOfFile)) {
-    if (consume(MITokenKind::Newline)) {
-      AtLineStart = true;
-      continue;
-    }
-    if (at(MITokenKind::MachineBasicBlockLabel)) {
-      if (!AtLineStart || token().range().Begin.Column != 1)
-        return fail("basic block definition must be at the start of a line");
-      std::uint32_t ID = 0;
-      if (parseBlockDefinition(true, ID))
-        return true;
-      AtLineStart = false;
-      continue;
-    }
-    if (at(MITokenKind::LeftBrace))
-      ++BraceDepth;
-    else if (at(MITokenKind::RightBrace)) {
-      if (BraceDepth == 0)
-        return fail("extraneous closing instruction bundle brace");
-      --BraceDepth;
-    }
-    AtLineStart = false;
-    advance();
-  }
-  if (BraceDepth != 0)
-    return fail("unterminated instruction bundle");
-  return false;
-}
-
-Register MIParser::Impl::getOrCreateVirtualRegister(const MIToken &Token) {
-  if (Token.kind() == MITokenKind::VirtualRegister) {
-    std::uint32_t ID = 0;
-    if (parseUnsigned32(Token, ID))
-      return {};
-    if (const auto Found = NumericVirtualRegisters.find(ID);
-        Found != NumericVirtualRegisters.end()) {
-      return Found->second;
-    }
-    auto Created = Function.registerInfo().createVirtualRegister();
-    if (!Created) {
-      static_cast<void>(importError(Token, Created.error()));
-      return {};
-    }
-    NumericVirtualRegisters.emplace(ID, *Created);
-    return *Created;
-  }
-
-  const std::string Name(Token.stringValue());
-  if (const auto Found = NamedVirtualRegisters.find(Name); Found != NamedVirtualRegisters.end())
-    return Found->second;
-  auto Created = Function.registerInfo().createVirtualRegister();
-  if (!Created) {
-    static_cast<void>(importError(Token, Created.error()));
-    return {};
-  }
-  auto Info = Function.registerInfo().virtualRegisterInfo(*Created);
-  if (!Info) {
-    static_cast<void>(importError(Token, Info.error()));
-    return {};
-  }
-  Info->get().Name = Name;
-  NamedVirtualRegisters.emplace(Name, *Created);
-  return *Created;
-}
-
-bool MIParser::Impl::parseRegister(Register &Result) {
-  const MIToken RegisterToken = token();
-  if (consume(MITokenKind::Underscore)) {
-    Result = {};
-    return false;
-  }
-  if (at(MITokenKind::NamedRegister)) {
-    if (RegisterToken.stringValue() == "noreg") {
-      Result = {};
-      advance();
-      return false;
-    }
-    const PhysicalRegisterDesc *Description =
-        Target.registers().physicalRegister(RegisterToken.stringValue());
-    if (Description == nullptr)
-      return fail("unknown physical register '$" + std::string(RegisterToken.stringValue()) + "'");
-    Result = Register::fromPhysical(Description->Reg);
-    advance();
-    return false;
-  }
-  if (at(MITokenKind::VirtualRegister) || at(MITokenKind::NamedVirtualRegister)) {
-    Result = getOrCreateVirtualRegister(RegisterToken);
-    if (Result.isNoRegister())
-      return true;
-    advance();
-    return false;
-  }
-  return fail("expected a machine register");
-}
-
-bool MIParser::Impl::parseRegisterOperand(bool IsDef, ParsedOperand &Result) {
-  const MIToken Begin = token();
-  RegisterOperandFlags Flags{IsDef ? RegisterOperandFlag::Define : RegisterOperandFlag::Use};
-  std::unordered_set<std::string> SeenFlags;
-  while (token().isRegisterFlag()) {
-    const std::string Name(token().stringValue());
-    if (!SeenFlags.insert(Name).second)
-      return fail("duplicate '" + Name + "' register flag");
-    if (Name == "implicit")
-      Flags.set(RegisterOperandFlag::Implicit);
-    else if (Name == "implicit-def") {
-      Flags.clear(RegisterOperandFlag::Use);
-      Flags.set(RegisterOperandFlag::Define);
-      Flags.set(RegisterOperandFlag::Implicit);
-      IsDef = true;
-    } else if (Name == "def") {
-      Flags.clear(RegisterOperandFlag::Use);
-      Flags.set(RegisterOperandFlag::Define);
-      IsDef = true;
-    } else if (Name == "dead")
-      Flags.set(RegisterOperandFlag::Dead);
-    else if (Name == "killed")
-      Flags.set(RegisterOperandFlag::Kill);
-    else if (Name == "undef")
-      Flags.set(RegisterOperandFlag::Undef);
-    else if (Name == "internal")
-      Flags.set(RegisterOperandFlag::InternalRead);
-    else if (Name == "early-clobber")
-      Flags.set(RegisterOperandFlag::EarlyClobber);
-    else if (Name == "debug-use")
-      Flags.set(RegisterOperandFlag::Debug);
-    else if (Name == "renamable")
-      Flags.set(RegisterOperandFlag::Renamable);
-    advance();
-  }
-
-  Register Reg;
-  if (parseRegister(Reg))
-    return true;
-
-  SubRegIndex SubReg;
-  if (consume(MITokenKind::Dot)) {
-    if (!Reg.isVirtual() || !at(MITokenKind::Identifier))
-      return fail("subregister index requires a virtual register");
-    const SubRegIndexDesc *Description = Target.registers().subRegIndex(token().stringValue());
-    if (Description == nullptr)
-      return fail("unknown subregister index '" + std::string(token().stringValue()) + "'");
-    SubReg = Description->ID;
-    advance();
-  }
-
-  if (consume(MITokenKind::Colon)) {
-    if (!Reg.isVirtual())
-      return fail("register class or bank requires a virtual register");
-    auto InfoResult = Function.registerInfo().virtualRegisterInfo(Reg);
-    if (!InfoResult)
-      return importError(Begin, InfoResult.error());
-    VirtualRegisterInfo &Info = InfoResult->get();
-    if (consume(MITokenKind::Underscore)) {
-      if (Info.RegClass || Info.Bank)
-        return fail("conflicting generic virtual register constraint");
-    } else if (at(MITokenKind::Identifier)) {
-      if (const RegisterClassDesc *Class =
-              Target.registers().registerClass(token().stringValue())) {
-        if ((Info.RegClass && *Info.RegClass != Class->ID) ||
-            (Info.Bank && *Info.Bank != Class->DefaultBank))
-          return fail("conflicting virtual register class");
-        auto SetClass = Function.registerInfo().setRegisterClass(Reg, Class->ID);
-        if (!SetClass)
-          return importError(token(), SetClass.error());
-        auto SetBank = Function.registerInfo().setRegisterBank(Reg, Class->DefaultBank);
-        if (!SetBank)
-          return importError(token(), SetBank.error());
-      } else if (const RegisterBankDesc *Bank =
-                     Target.registers().registerBank(token().stringValue())) {
-        const RegisterClassDesc *ExistingClass =
-            Info.RegClass ? Target.registers().registerClass(*Info.RegClass) : nullptr;
-        if ((Info.Bank && *Info.Bank != Bank->ID) ||
-            (Info.RegClass && (ExistingClass == nullptr || ExistingClass->DefaultBank != Bank->ID)))
-          return fail("conflicting virtual register bank");
-        auto SetBank = Function.registerInfo().setRegisterBank(Reg, Bank->ID);
-        if (!SetBank)
-          return importError(token(), SetBank.error());
-      } else {
-        return fail("unknown register class or bank '" + std::string(token().stringValue()) + "'");
-      }
-      advance();
-    } else {
-      return fail("expected '_', register class, or register bank name");
-    }
-  }
-
-  std::optional<std::size_t> TiedDef;
-  if (consume(MITokenKind::LeftParen)) {
-    if (atKeyword("tied-def")) {
-      if (IsDef)
-        return fail("'tied-def' is only valid on register uses");
-      advance();
-      std::uint64_t Index = 0;
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), Index) ||
-          Index > std::numeric_limits<std::size_t>::max()) {
-        return fail("invalid tied-def operand index");
-      }
-      TiedDef = static_cast<std::size_t>(Index);
-      advance();
-      if (expect(MITokenKind::RightParen, "')' after tied-def"))
-        return true;
-    } else {
-      if (!Reg.isVirtual())
-        return fail("low-level type is only valid on a virtual register");
-      LLT Type;
-      if (parseLowLevelType(Type))
-        return true;
-      if (expect(MITokenKind::RightParen, "')' after the low-level type"))
-        return true;
-      auto InfoResult = Function.registerInfo().virtualRegisterInfo(Reg);
-      if (!InfoResult)
-        return importError(Begin, InfoResult.error());
-      VirtualRegisterInfo &Info = InfoResult->get();
-      if (Info.Type && *Info.Type != Type)
-        return fail(Begin, "conflicting virtual register low-level type");
-      auto SetType = Function.registerInfo().setType(Reg, Type);
-      if (!SetType)
-        return importError(Begin, SetType.error());
-    }
-  }
-
-  if (IsDef && Reg.isVirtual()) {
-    auto InfoResult = Function.registerInfo().virtualRegisterInfo(Reg);
-    if (!InfoResult)
-      return importError(Begin, InfoResult.error());
-    const VirtualRegisterInfo &Info = InfoResult->get();
-    if (!Info.RegClass && !Info.Type)
-      return fail(Begin, "generic virtual register definition requires a low-level type");
-  }
-
-  if (Flags.has(RegisterOperandFlag::Define) && Flags.has(RegisterOperandFlag::Kill))
-    return fail(Begin, "defined register operand cannot be killed");
-  if (!Flags.has(RegisterOperandFlag::Define) && Flags.has(RegisterOperandFlag::Dead))
-    return fail(Begin, "register use cannot be dead");
-
-  auto Operand = MachineOperand::registerOperand(Reg, Flags, SubReg);
-  if (!Operand)
-    return importError(Begin, Operand.error());
-  Result =
-      ParsedOperand{std::move(*Operand), TiedDef, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-MachineBasicBlock *MIParser::Impl::blockFor(const MIToken &Token) {
-  std::uint32_t ID = 0;
-  if (parseUnsigned32(Token, ID)) {
-    static_cast<void>(fail(Token, "invalid machine basic block reference"));
-    return nullptr;
-  }
-  const auto Found = Blocks.find(ID);
-  if (Found == Blocks.end()) {
-    static_cast<void>(fail(Token, "use of undefined machine basic block #" + std::to_string(ID)));
-    return nullptr;
-  }
-  if (!Token.stringValue().empty()) {
-    const std::optional<std::string_view> Name = Found->second->attributes().name();
-    if (!Name || *Name != Token.stringValue()) {
-      static_cast<void>(fail(Token, "machine basic block reference has a mismatched name"));
-      return nullptr;
-    }
-  }
-  return Found->second;
-}
-
-std::optional<FrameIndex> MIParser::Impl::frameIndexFor(const MIToken &Token, bool Fixed) {
-  std::uint32_t ID = 0;
-  if (parseUnsigned32(Token, ID)) {
-    static_cast<void>(fail(Token, "invalid stack object reference"));
-    return std::nullopt;
-  }
-  const auto &Slots = Fixed ? Context.FixedStackObjects : Context.StackObjects;
-  for (const MIFrameObjectSlot &Slot : Slots) {
-    if (Slot.TextID != ID)
-      continue;
-    if (!Token.stringValue().empty() && (!Slot.Name || *Slot.Name != Token.stringValue())) {
-      static_cast<void>(fail(Token, "stack object reference has a mismatched name"));
-      return std::nullopt;
-    }
-    if (Function.frameInfo().object(Slot.Index) == nullptr) {
-      static_cast<void>(fail(Token, "stack object slot maps to a missing frame object"));
-      return std::nullopt;
-    }
-    return Slot.Index;
-  }
-  static_cast<void>(fail(Token, std::string("use of undefined ") +
-                                    (Fixed ? "fixed stack" : "stack") + " object #" +
-                                    std::to_string(ID)));
-  return std::nullopt;
-}
-
-std::optional<ConstantPoolIndex> MIParser::Impl::constantPoolIndexFor(const MIToken &Token) {
-  std::uint32_t ID = 0;
-  if (parseUnsigned32(Token, ID)) {
-    static_cast<void>(fail(Token, "invalid constant pool reference"));
-    return std::nullopt;
-  }
-  for (const MIConstantPoolSlot &Slot : Context.ConstantPoolItems) {
-    if (Slot.TextID == ID && Function.constantPool().entry(Slot.Index) != nullptr)
-      return Slot.Index;
-  }
-  static_cast<void>(fail(Token, "use of undefined constant pool item #" + std::to_string(ID)));
-  return std::nullopt;
-}
-
-std::optional<JumpTableIndex> MIParser::Impl::jumpTableIndexFor(const MIToken &Token) {
-  std::uint32_t ID = 0;
-  if (parseUnsigned32(Token, ID)) {
-    static_cast<void>(fail(Token, "invalid jump table reference"));
-    return std::nullopt;
-  }
-  for (const MIJumpTableSlot &Slot : Context.JumpTables) {
-    if (Slot.TextID == ID && (Function.jumpTableInfo().table(Slot.Index) != nullptr ||
-                              (Slot.Index.value() < Function.jumpTableInfo().tables().size() &&
-                               Function.jumpTableInfo().tables()[Slot.Index.value()].isPending())))
-      return Slot.Index;
-  }
-  static_cast<void>(fail(Token, "use of undefined jump table #" + std::to_string(ID)));
-  return std::nullopt;
-}
-
-std::string MIParser::Impl::symbolName(const MIToken &Token) const {
-  if (Token.hasStringValue())
-    return std::string(Token.stringValue());
-  return std::string(Token.integerValue());
-}
-
-bool MIParser::Impl::parseTargetFlags(std::uint32_t &Flags) {
-  Flags = 0;
-  if (!atKeyword("target-flags"))
-    return false;
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after target-flags"))
-    return true;
-  if (!at(MITokenKind::Identifier))
-    return fail("expected a target flag name");
-
-  const std::string First(token().stringValue());
-  if (const auto Direct = Target.mirText().directOperandFlag(First))
-    Flags = *Direct;
-  else if (const auto Bit = Target.mirText().bitmaskOperandFlag(First))
-    Flags = *Bit;
-  else
-    return fail("unknown target operand flag '" + First + "'");
-  advance();
-
-  std::unordered_set<std::string> Seen{First};
-  while (consume(MITokenKind::Comma)) {
-    if (!at(MITokenKind::Identifier))
-      return fail("expected a target bit flag name");
-    const std::string Name(token().stringValue());
-    const auto Bit = Target.mirText().bitmaskOperandFlag(Name);
-    if (!Bit)
-      return fail("unknown target bit operand flag '" + Name + "'");
-    if (!Seen.insert(Name).second || (Flags & *Bit) == *Bit)
-      return fail("duplicate target operand flag '" + Name + "'");
-    Flags |= *Bit;
-    advance();
-  }
-  if (expect(MITokenKind::RightParen, "')' after target flags"))
-    return true;
-  const auto Valid = Target.mirText().validateOperandFlags(Flags);
-  return !Valid && importError(token(), Valid.error());
-}
-
-bool MIParser::Impl::parseTypedIntegerOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  const std::string_view TypeSpelling = Begin.stringValue();
-  if (!TypeSpelling.starts_with('i'))
-    return fail(Begin, "typed integer operand must use an 'iN' type");
-  std::uint64_t WideBitWidth = 0;
-  if (!parseUnsignedDigits(TypeSpelling.substr(1), WideBitWidth) ||
-      WideBitWidth > IntegerImmediate::MaxBitWidth) {
-    return fail(Begin, "typed integer operand has an invalid bit width");
-  }
-  const auto BitWidth = static_cast<std::uint32_t>(WideBitWidth);
-  advance();
-
-  std::string_view ValueSpelling;
-  if (at(MITokenKind::IntegerLiteral)) {
-    ValueSpelling = token().integerValue();
-  } else if (at(MITokenKind::Identifier) && token().stringValue() == "true") {
-    ValueSpelling = "1";
-  } else if (at(MITokenKind::Identifier) && token().stringValue() == "false") {
-    ValueSpelling = "0";
-  } else {
-    return fail("expected a decimal integer, true, or false after the typed integer type");
-  }
-
-  auto Value = parseIntegerImmediateValue(BitWidth, ValueSpelling);
-  if (!Value)
-    return importError(token(), Value.error());
-  advance();
-  Result = ParsedOperand{
-      MachineOperand::integerImmediate(std::move(*Value)),
-      std::nullopt,
-      {Begin.range().Begin, token().range().Begin},
-  };
-  return false;
-}
-
-bool MIParser::Impl::parseFloatingImmediateOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  const auto Semantics = floatSemanticsForKeyword(Begin.stringValue());
-  if (!Semantics)
-    return fail(Begin, "unknown floating-point immediate type");
-  advance();
-  if (!at(MITokenKind::FloatingPointLiteral) && !at(MITokenKind::HexLiteral))
-    return fail("expected a floating-point literal");
-
-  const MIToken Literal = token();
-  std::string ConstantText(Begin.stringValue());
-  ConstantText.push_back(' ');
-  ConstantText.append(Literal.spelling());
-  auto Constant = parseLLVMConstant(ConstantText);
-  if (!Constant)
-    return fail(Literal, std::string(Constant.error().message()));
-  if (!Constant->FloatingValue || Constant->FloatingValue->semantics() != *Semantics)
-    return fail(Literal, "floating-point literal produced the wrong semantics");
-  advance();
-  Result = ParsedOperand{
-      MachineOperand::floatingImmediate(*Constant->FloatingValue),
-      std::nullopt,
-      {Begin.range().Begin, token().range().Begin},
-  };
-  return false;
-}
-
-bool MIParser::Impl::parseMetadataReference(MachineMetadataReference &Result) {
-  const MIToken Begin = token();
-  if (expect(MITokenKind::Exclaim, "'!' before a metadata slot"))
-    return true;
-  std::uint32_t TextID = 0;
-  if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), TextID))
-    return fail("expected a 32-bit metadata slot number");
-
-  for (const MIMetadataSlot &Slot : Context.Metadata) {
-    if (Slot.TextID != TextID)
-      continue;
-    if (!Slot.Reference.isValid())
-      return fail(Begin, "metadata slot maps to an invalid reference");
-    Result = Slot.Reference;
-    advance();
-    return false;
-  }
-  if (Function.metadata().node(TextID) != nullptr) {
-    Result = MachineMetadataReference::machineFunction(TextID);
-    advance();
-    return false;
-  }
-  return fail(Begin, "use of undefined metadata slot !" + std::to_string(TextID));
-}
-
-bool MIParser::Impl::parseMetadataOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  MachineMetadataValue Value;
-  if (at(MITokenKind::Exclaim)) {
-    MachineMetadataReference Reference;
-    if (parseMetadataReference(Reference))
-      return true;
-    auto Created = MachineMetadataValue::reference(Reference);
-    if (!Created)
-      return importError(Begin, Created.error());
-    Value = std::move(*Created);
-  } else if (at(MITokenKind::MetadataKeyword) && token().isMetadataKeyword("!DIExpression")) {
-    advance();
-    if (expect(MITokenKind::LeftParen, "'(' after !DIExpression"))
-      return true;
-    std::vector<std::uint64_t> Elements;
-    while (!at(MITokenKind::RightParen)) {
-      if (at(MITokenKind::Identifier)) {
-        const auto Opcode = parseDIExpressionOpcodeName(token().stringValue());
-        const auto Encoding = parseDIExpressionAttributeEncodingName(token().stringValue());
-        if (!Opcode && !Encoding)
-          return fail(invalidDIExpressionElementMessage(token().stringValue()));
-        Elements.push_back(Opcode ? *Opcode : *Encoding);
-        advance();
-      } else if (at(MITokenKind::IntegerLiteral)) {
-        std::int64_t Signed = 0;
-        if (parseSigned64(token(), Signed))
-          return fail("debug expression element exceeds 64 bits");
-        Elements.push_back(std::bit_cast<std::uint64_t>(Signed));
-        advance();
-      } else {
-        return fail("expected a debug expression opcode or integer");
-      }
-      if (!consume(MITokenKind::Comma))
-        break;
-    }
-    if (expect(MITokenKind::RightParen, "')' after !DIExpression"))
-      return true;
-    Value = MachineMetadataValue::expression(MachineDIExpression(std::move(Elements)));
-  } else {
-    return fail("expected a metadata reference or !DIExpression");
-  }
-
-  auto Operand = MachineOperand::metadata(std::move(Value));
-  if (!Operand)
-    return importError(Begin, Operand.error());
-  Result = ParsedOperand{
-      std::move(*Operand),
-      std::nullopt,
-      {Begin.range().Begin, token().range().Begin},
-  };
-  return false;
-}
-
-bool MIParser::Impl::parseInlineDILocation(
-    std::vector<MachineDILocationFrame> &InlineChain,
-    std::optional<MachineMetadataReference> &TerminalInlinedAt) {
-  if (!at(MITokenKind::MetadataKeyword) || !token().isMetadataKeyword("!DILocation")) {
-    return fail("expected an inline !DILocation");
-  }
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after !DILocation"))
-    return true;
-
-  MachineDILocationFrame Frame;
-  bool HasLine = false;
-  bool HasScope = false;
-  std::vector<MachineDILocationFrame> NestedChain;
-  std::optional<MachineMetadataReference> NestedTerminal;
-  std::unordered_set<std::string> SeenFields;
-  while (!at(MITokenKind::RightParen)) {
-    if (!at(MITokenKind::Identifier))
-      return fail("expected a DILocation field name");
-    const MIToken FieldToken = token();
-    const std::string Field(token().stringValue());
-    if (!SeenFields.insert(Field).second)
-      return fail("duplicate DILocation field '" + Field + "'");
-    advance();
-    if (expect(MITokenKind::Colon, "':' after a DILocation field name"))
-      return true;
-
-    if (Field == "line") {
-      std::uint32_t Line = 0;
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), Line))
-        return fail("expected an unsigned 32-bit DILocation line");
-      Frame.Line = Line;
-      HasLine = true;
-      advance();
-    } else if (Field == "column") {
-      std::uint64_t Column = 0;
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), Column) ||
-          Column > std::numeric_limits<std::uint16_t>::max()) {
-        return fail("expected an unsigned 16-bit DILocation column");
-      }
-      Frame.Column = static_cast<std::uint16_t>(Column);
-      advance();
-    } else if (Field == "scope") {
-      MachineMetadataReference Scope;
-      if (parseMetadataReference(Scope))
-        return true;
-      if (Scope.scope() != MachineMetadataScope::EmbeddedIR)
-        return fail(FieldToken, "DILocation scope must reference embedded IR metadata");
-      Frame.Scope = Scope;
-      HasScope = true;
-    } else if (Field == "inlinedAt") {
-      if (at(MITokenKind::MetadataKeyword) && token().isMetadataKeyword("!DILocation")) {
-        if (parseInlineDILocation(NestedChain, NestedTerminal))
-          return true;
-      } else {
-        MachineMetadataReference Reference;
-        if (parseMetadataReference(Reference))
-          return true;
-        if (Reference.scope() != MachineMetadataScope::EmbeddedIR) {
-          return fail(FieldToken, "DILocation inlinedAt must reference embedded IR metadata");
-        }
-        NestedTerminal = Reference;
-      }
-    } else if (Field == "isImplicitCode") {
-      if (!at(MITokenKind::Identifier) ||
-          (token().stringValue() != "true" && token().stringValue() != "false")) {
-        return fail("expected 'true' or 'false' for DILocation isImplicitCode");
-      }
-      Frame.IsImplicitCode = token().stringValue() == "true";
-      advance();
-    } else if (Field == "atomGroup") {
-      std::uint64_t Group = 0;
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), Group) ||
-          Group > MachineDILocation::MaxAtomGroup) {
-        return fail("DILocation atomGroup exceeds 61 bits");
-      }
-      Frame.AtomGroup = Group;
-      advance();
-    } else if (Field == "atomRank") {
-      std::uint64_t Rank = 0;
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), Rank) || Rank > 7) {
-        return fail("DILocation atomRank exceeds three bits");
-      }
-      Frame.AtomRank = static_cast<std::uint8_t>(Rank);
-      advance();
-    } else {
-      return fail(FieldToken, "unknown DILocation field '" + Field + "'");
-    }
-
-    if (!consume(MITokenKind::Comma))
-      break;
-  }
-  if (expect(MITokenKind::RightParen, "')' after !DILocation"))
-    return true;
-  if (!HasLine)
-    return fail("DILocation requires a line field");
-  if (!HasScope)
-    return fail("DILocation requires a scope field");
-
-  InlineChain.push_back(Frame);
-  InlineChain.insert(InlineChain.end(), NestedChain.begin(), NestedChain.end());
-  TerminalInlinedAt = NestedTerminal;
-  return false;
-}
-
-bool MIParser::Impl::parseCFIRegister(DwarfRegisterNumber &Result) {
-  if (!at(MITokenKind::NamedRegister))
-    return fail("expected a physical register in the CFI instruction");
-  const MIToken RegisterToken = token();
-  Register Reg;
-  if (parseRegister(Reg) || !Reg.isPhysical())
-    return true;
-  const auto Physical = Reg.physicalRegister();
-  if (!Physical)
-    return fail(RegisterToken, "CFI register is not a physical register");
-  const auto Dwarf = Target.mirText().dwarfRegister(*Physical);
-  if (!Dwarf)
-    return fail(RegisterToken, "physical register has no canonical DWARF register number");
-  Result = DwarfRegisterNumber::fromValue(*Dwarf);
-  return false;
-}
-
-bool MIParser::Impl::parseCFISigned(std::int64_t &Result) {
-  if (!at(MITokenKind::IntegerLiteral) || parseSigned64(token(), Result))
-    return fail("expected a signed 64-bit CFI integer");
-  advance();
-  return false;
-}
-
-bool MIParser::Impl::parseCFIUnsigned(std::uint32_t &Result) {
-  if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), Result))
-    return fail("expected an unsigned 32-bit CFI integer");
-  advance();
-  return false;
-}
-
-bool MIParser::Impl::parseCFIOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  const std::string Operation(token().stringValue());
-  advance();
-
-  const auto Comma = [this]() { return expect(MITokenKind::Comma, "',' in CFI instruction"); };
-  DwarfRegisterNumber Register;
-  DwarfRegisterNumber OtherRegister;
-  std::int64_t Offset = 0;
-  std::optional<MachineCFIInstruction> Instruction;
-  if (Operation == "same_value") {
-    if (parseCFIRegister(Register))
-      return true;
-    Instruction = MachineCFIInstruction::sameValue(Register);
-  } else if (Operation == "remember_state") {
-    Instruction = MachineCFIInstruction::rememberState();
-  } else if (Operation == "restore_state") {
-    Instruction = MachineCFIInstruction::restoreState();
-  } else if (Operation == "offset" || Operation == "rel_offset") {
-    if (parseCFIRegister(Register) || Comma() || parseCFISigned(Offset))
-      return true;
-    Instruction = Operation == "offset" ? MachineCFIInstruction::offset(Register, Offset)
-                                        : MachineCFIInstruction::relativeOffset(Register, Offset);
-  } else if (Operation == "def_cfa_register") {
-    if (parseCFIRegister(Register))
-      return true;
-    Instruction = MachineCFIInstruction::defCFARegister(Register);
-  } else if (Operation == "def_cfa_offset" || Operation == "adjust_cfa_offset") {
-    if (parseCFISigned(Offset))
-      return true;
-    Instruction = Operation == "def_cfa_offset" ? MachineCFIInstruction::defCFAOffset(Offset)
-                                                : MachineCFIInstruction::adjustCFAOffset(Offset);
-  } else if (Operation == "def_cfa") {
-    if (parseCFIRegister(Register) || Comma() || parseCFISigned(Offset))
-      return true;
-    Instruction = MachineCFIInstruction::defCFA(Register, Offset);
-  } else if (Operation == "llvm_def_aspace_cfa") {
-    std::uint32_t AddressSpace = 0;
-    if (parseCFIRegister(Register) || Comma() || parseCFISigned(Offset) || Comma() ||
-        parseCFIUnsigned(AddressSpace)) {
-      return true;
-    }
-    Instruction = MachineCFIInstruction::llvmDefAddressSpaceCFA(Register, Offset, AddressSpace);
-  } else if (Operation == "restore" || Operation == "undefined") {
-    if (parseCFIRegister(Register))
-      return true;
-    Instruction = Operation == "restore" ? MachineCFIInstruction::restore(Register)
-                                         : MachineCFIInstruction::undefined(Register);
-  } else if (Operation == "register") {
-    if (parseCFIRegister(Register) || Comma() || parseCFIRegister(OtherRegister))
-      return true;
-    Instruction = MachineCFIInstruction::registerRule(Register, OtherRegister);
-  } else if (Operation == "window_save") {
-    Instruction = MachineCFIInstruction::windowSave();
-  } else if (Operation == "negate_ra_sign_state") {
-    Instruction = MachineCFIInstruction::negateReturnAddressState();
-  } else if (Operation == "negate_ra_sign_state_with_pc") {
-    Instruction = MachineCFIInstruction::negateReturnAddressStateWithPC();
-  } else if (Operation == "llvm_register_pair") {
-    DwarfRegisterNumber First;
-    DwarfRegisterNumber Second;
-    std::uint32_t FirstSize = 0;
-    std::uint32_t SecondSize = 0;
-    if (parseCFIRegister(Register) || Comma() || parseCFIRegister(First) || Comma() ||
-        parseCFIUnsigned(FirstSize) || Comma() || parseCFIRegister(Second) || Comma() ||
-        parseCFIUnsigned(SecondSize)) {
-      return true;
-    }
-    Instruction = MachineCFIInstruction::llvmRegisterPair({.Register = Register,
-                                                           .FirstRegister = First,
-                                                           .FirstSizeInBits = FirstSize,
-                                                           .SecondRegister = Second,
-                                                           .SecondSizeInBits = SecondSize});
-  } else if (Operation == "llvm_vector_registers") {
-    if (parseCFIRegister(Register) || Comma())
-      return true;
-    std::vector<MachineCFIVectorRegisterLane> Registers;
-    do {
-      DwarfRegisterNumber VectorRegister;
-      std::uint32_t Lane = 0;
-      std::uint32_t Size = 0;
-      if (parseCFIRegister(VectorRegister) || Comma() || parseCFIUnsigned(Lane) || Comma() ||
-          parseCFIUnsigned(Size)) {
-        return true;
-      }
-      Registers.push_back({.Register = VectorRegister, .Lane = Lane, .SizeInBits = Size});
-      if (!at(MITokenKind::Comma))
-        break;
-      advance();
-      if (!at(MITokenKind::NamedRegister))
-        return fail("expected another vector CFI register tuple");
-    } while (true);
-    auto Created = MachineCFIInstruction::llvmVectorRegisters(
-        {.Register = Register, .VectorRegisters = std::move(Registers)});
-    if (!Created)
-      return importError(Begin, Created.error());
-    Instruction = std::move(*Created);
-  } else if (Operation == "llvm_vector_offset") {
-    DwarfRegisterNumber MaskRegister;
-    std::uint32_t RegisterSize = 0;
-    std::uint32_t MaskSize = 0;
-    if (parseCFIRegister(Register) || Comma() || parseCFIUnsigned(RegisterSize) || Comma() ||
-        parseCFIRegister(MaskRegister) || Comma() || parseCFIUnsigned(MaskSize) || Comma() ||
-        parseCFISigned(Offset)) {
-      return true;
-    }
-    Instruction = MachineCFIInstruction::llvmVectorOffset({.Register = Register,
-                                                           .RegisterSizeInBits = RegisterSize,
-                                                           .MaskRegister = MaskRegister,
-                                                           .MaskRegisterSizeInBits = MaskSize,
-                                                           .Offset = Offset});
-  } else if (Operation == "llvm_vector_register_mask") {
-    DwarfRegisterNumber SpillRegister;
-    DwarfRegisterNumber MaskRegister;
-    std::uint32_t SpillLaneSize = 0;
-    std::uint32_t MaskSize = 0;
-    if (parseCFIRegister(Register) || Comma() || parseCFIRegister(SpillRegister) || Comma() ||
-        parseCFIUnsigned(SpillLaneSize) || Comma() || parseCFIRegister(MaskRegister) || Comma() ||
-        parseCFIUnsigned(MaskSize)) {
-      return true;
-    }
-    Instruction =
-        MachineCFIInstruction::llvmVectorRegisterMask({.Register = Register,
-                                                       .SpillRegister = SpillRegister,
-                                                       .SpillRegisterLaneSizeInBits = SpillLaneSize,
-                                                       .MaskRegister = MaskRegister,
-                                                       .MaskRegisterSizeInBits = MaskSize});
-  } else if (Operation == "escape") {
-    std::vector<std::uint8_t> Bytes;
-    while (true) {
-      std::uint64_t Byte = 0;
-      if (!at(MITokenKind::HexLiteral) || parseUnsigned(token(), Byte) ||
-          Byte > std::numeric_limits<std::uint8_t>::max()) {
-        return fail("CFI escape element must be an 8-bit hexadecimal literal");
-      }
-      Bytes.push_back(static_cast<std::uint8_t>(Byte));
-      advance();
-      if (!at(MITokenKind::Comma) || !nextIs(MITokenKind::HexLiteral))
-        break;
-      advance();
-    }
-    auto Created = MachineCFIInstruction::escape(std::move(Bytes));
-    if (!Created)
-      return importError(Begin, Created.error());
-    Instruction = std::move(*Created);
-  } else {
-    return fail(Begin, "unsupported CFI operation '" + Operation + "'");
-  }
-
-  auto Index = Function.cfiInfo().addInstruction(std::move(*Instruction));
-  if (!Index)
-    return importError(Begin, Index.error());
-  Result = ParsedOperand{
-      MachineOperand::cfiIndex(*Index),
-      std::nullopt,
-      {Begin.range().Begin, token().range().Begin},
-  };
-  return false;
-}
-
-bool MIParser::Impl::parseMemoryBase(MemoryBase &Result, std::int64_t &Offset) {
-  const MIToken BaseToken = token();
-  switch (BaseToken.kind()) {
-  case MITokenKind::StackObject:
-  case MITokenKind::FixedStackObject: {
-    const auto Index = frameIndexFor(BaseToken, BaseToken.kind() == MITokenKind::FixedStackObject);
-    if (!Index)
-      return true;
-    Result = MemoryBase::frameIndex(*Index);
-    advance();
-    break;
-  }
-  case MITokenKind::ConstantPoolItem: {
-    const auto Index = constantPoolIndexFor(BaseToken);
-    if (!Index)
-      return true;
-    Result = MemoryBase::constantPool(*Index);
-    advance();
-    break;
-  }
-  case MITokenKind::JumpTableIndex: {
-    const auto Index = jumpTableIndexFor(BaseToken);
-    if (!Index)
-      return true;
-    Result = MemoryBase::jumpTable(*Index);
-    advance();
-    break;
-  }
-  case MITokenKind::GlobalValue:
-  case MITokenKind::NamedGlobalValue:
-    Result = MemoryBase::globalSymbol(symbolName(BaseToken));
-    advance();
-    break;
-  case MITokenKind::ExternalSymbol:
-    Result = MemoryBase::externalSymbol(symbolName(BaseToken));
-    advance();
-    break;
-  case MITokenKind::IRValue:
-  case MITokenKind::NamedIRValue:
-    Result = MemoryBase::irValue(symbolName(BaseToken));
-    advance();
-    break;
-  case MITokenKind::QuotedIRValue: {
-    auto Constant = parseLLVMConstant(BaseToken.stringValue());
-    if (!Constant)
-      return importError(BaseToken, Constant.error());
-    auto Base = MemoryBase::irConstant(std::move(*Constant));
-    if (!Base)
-      return importError(BaseToken, Base.error());
-    Result = std::move(*Base);
-    advance();
-    break;
-  }
-  case MITokenKind::Keyword:
-    if (BaseToken.isKeyword("unknown-address")) {
-      Result = MemoryBase();
-      advance();
-    } else if (BaseToken.isKeyword("stack")) {
-      Result = MemoryBase::stack();
-      advance();
-    } else if (BaseToken.isKeyword("got")) {
-      Result = MemoryBase::got();
-      advance();
-    } else if (BaseToken.isKeyword("constant-pool")) {
-      Result = MemoryBase::constantPoolPseudo();
-      advance();
-    } else if (BaseToken.isKeyword("jump-table")) {
-      Result = MemoryBase::jumpTablePseudo();
-      advance();
-    } else if (BaseToken.isKeyword("call-entry")) {
-      advance();
-      if (at(MITokenKind::GlobalValue) || at(MITokenKind::NamedGlobalValue)) {
-        Result = MemoryBase::callEntryGlobal(symbolName(token()));
-      } else if (at(MITokenKind::ExternalSymbol)) {
-        Result = MemoryBase::callEntryExternal(symbolName(token()));
-      } else {
-        return fail("call-entry memory base requires a global or external symbol");
-      }
-      advance();
-    } else if (BaseToken.isKeyword("custom")) {
-      advance();
-      if (!at(MITokenKind::Identifier) && !at(MITokenKind::StringConstant))
-        return fail("custom memory base requires a target spelling");
-      Result = MemoryBase::custom(std::string(token().stringValue()));
-      advance();
-    } else {
-      return fail(BaseToken, "unsupported machine memory base");
-    }
-    break;
-  default:
-    return fail(BaseToken, "expected a machine memory base");
-  }
-  return parseOptionalOffset(Offset);
-}
-
-bool MIParser::Impl::parseMemoryOperand(const MachineMemOperand *&Result,
-                                        Opcode InstructionOpcode) {
-  const MIToken Begin = token();
-  if (expect(MITokenKind::LeftParen, "'(' before a machine memory operand"))
-    return true;
-
-  MachineMemOperandDesc Description;
-  std::unordered_set<std::string> SeenFlags;
-  while (token().isMemoryOperandFlag()) {
-    const std::string Name(token().stringValue());
-    if (!SeenFlags.insert(Name).second)
-      return fail("duplicate machine memory operand flag '" + Name + "'");
-    if (atKeyword("volatile"))
-      Description.Accesses.set(MemoryAccessFlag::Volatile);
-    else if (atKeyword("non-temporal"))
-      Description.Accesses.set(MemoryAccessFlag::NonTemporal);
-    else if (atKeyword("dereferenceable"))
-      Description.Accesses.set(MemoryAccessFlag::Dereferenceable);
-    else if (atKeyword("invariant"))
-      Description.Accesses.set(MemoryAccessFlag::Invariant);
-    else {
-      const auto Flag = Target.mirText().machineMemOperandFlag(token().stringValue());
-      if (!Flag)
-        return fail("unknown target machine memory operand flag '" + Name + "'");
-      if ((Description.TargetFlags & *Flag) != 0)
-        return fail("overlapping target machine memory operand flag '" + Name + "'");
-      Description.TargetFlags |= *Flag;
-    }
-    advance();
-  }
-
-  if (!at(MITokenKind::Identifier) ||
-      (token().stringValue() != "load" && token().stringValue() != "store")) {
-    return fail("expected load or store in a machine memory operand");
-  }
-  if (token().stringValue() == "load")
-    Description.Accesses.set(MemoryAccessFlag::Load);
-  else
-    Description.Accesses.set(MemoryAccessFlag::Store);
-  advance();
-  if (at(MITokenKind::Identifier) && token().stringValue() == "store") {
-    if (Description.Accesses.has(MemoryAccessFlag::Store))
-      return fail("duplicate store memory operation");
-    Description.Accesses.set(MemoryAccessFlag::Store);
-    advance();
-  }
-
-  if (at(MITokenKind::Identifier) && token().stringValue() == "syncscope") {
-    advance();
-    if (expect(MITokenKind::LeftParen, "'(' after syncscope"))
-      return true;
-    if (!at(MITokenKind::StringConstant))
-      return fail("syncscope requires a quoted scope name");
-    const std::string_view Name = token().stringValue();
-    auto Scope = std::ranges::find_if(
-        Context.SyncScopes, [Name](const MISyncScopeSlot &Slot) { return Slot.Name == Name; });
-    if (Scope == Context.SyncScopes.end() && Context.InternSyncScope) {
-      const MIToken NameToken = token();
-      auto ID = Context.InternSyncScope(Name);
-      if (!ID)
-        return importError(NameToken, ID.error());
-      Context.SyncScopes.push_back({.Name = std::string(Name), .ID = *ID});
-      Scope = std::prev(Context.SyncScopes.end());
-    }
-    if (Scope == Context.SyncScopes.end())
-      return fail("unknown synchronization scope '" + std::string(Name) + "'");
-    Description.SyncScope = Scope->ID;
-    advance();
-    if (expect(MITokenKind::RightParen, "')' after syncscope"))
-      return true;
-  }
-
-  std::size_t OrderingCount = 0;
-  while (at(MITokenKind::Identifier)) {
-    const auto Ordering = atomicOrdering(token().stringValue());
-    if (!Ordering)
-      break;
-    if (OrderingCount == 0)
-      Description.SuccessOrdering = *Ordering;
-    else if (OrderingCount == 1)
-      Description.FailureOrdering = *Ordering;
-    else
-      return fail("machine memory operand has more than two atomic orderings");
-    ++OrderingCount;
-    advance();
-  }
-  const bool IsLoad = Description.Accesses.has(MemoryAccessFlag::Load);
-  const bool IsStore = Description.Accesses.has(MemoryAccessFlag::Store);
-  if (OrderingCount == 1) {
-    if (InstructionOpcode == opcode(GenericOpcode::G_ATOMIC_CMPXCHG) ||
-        InstructionOpcode == opcode(GenericOpcode::G_ATOMIC_CMPXCHG_WITH_SUCCESS)) {
-      Description.AtomicKind = AtomicOperation::CompareExchange;
-    } else {
-      Description.AtomicKind = IsLoad && IsStore
-                                   ? AtomicOperation::ReadModifyWrite
-                                   : (IsLoad ? AtomicOperation::Load : AtomicOperation::Store);
-    }
-  } else if (OrderingCount == 2)
-    Description.AtomicKind = AtomicOperation::CompareExchange;
-
-  std::uint64_t MinimumBytes = 0;
-  if (at(MITokenKind::IntegerLiteral)) {
-    if (parseUnsigned(token(), MinimumBytes) || MinimumBytes == 0)
-      return fail("machine memory operand size must be a nonzero byte count");
-    auto Size = MemorySize::fixed(MinimumBytes);
-    if (!Size)
-      return importError(token(), Size.error());
-    Description.Size = *Size;
-    advance();
-  } else if (atKeyword("unknown-size")) {
-    advance();
-  } else if (consume(MITokenKind::LeftParen)) {
-    LLT Type;
-    if (parseLowLevelType(Type))
-      return true;
-    if (expect(MITokenKind::RightParen, "')' after the memory low-level type"))
-      return true;
-    const auto MinimumBits = minimumTypeSizeInBits(Type);
-    if (!MinimumBits || *MinimumBits == 0)
-      return fail(Begin, "memory low-level type has no representable size");
-    MinimumBytes = (*MinimumBits + 7U) / 8U;
-    auto Size = Type.isScalableVector() ? MemorySize::scalable(MinimumBytes)
-                                        : MemorySize::fixed(MinimumBytes);
-    if (!Size)
-      return importError(Begin, Size.error());
-    Description.Size = *Size;
-    Description.MemoryType = Type;
-  } else {
-    return fail("expected a memory size, unknown-size, or memory low-level type");
-  }
-
-  if (MinimumBytes != 0) {
-    if (MinimumBytes > (std::uint64_t{1} << 63U))
-      return fail(Begin, "machine memory operand size has no representable default alignment");
-    auto DefaultAlignment = Alignment::create(std::bit_ceil(MinimumBytes));
-    if (!DefaultAlignment)
-      return importError(Begin, DefaultAlignment.error());
-    Description.Align = *DefaultAlignment;
-  }
-
-  if (at(MITokenKind::Identifier)) {
-    const std::string_view ExpectedPreposition =
-        IsLoad && IsStore ? "on" : (IsLoad ? "from" : "into");
-    if (token().stringValue() != ExpectedPreposition) {
-      return fail("expected '" + std::string(ExpectedPreposition) +
-                  "' before the machine memory base");
-    }
-    advance();
-    if (parseMemoryBase(Description.Base, Description.Offset))
-      return true;
-    if (const GenericConstantData *Constant = Description.Base.constantValue())
-      Description.AddressSpace = Constant->Type.AddressSpace;
-  }
-
-  Alignment BaseAlignment = Description.Align;
-  std::unordered_set<std::string> SeenOptions;
-  while (consume(MITokenKind::Comma)) {
-    const std::string Name(token().spelling());
-    if (!SeenOptions.insert(Name).second)
-      return fail("duplicate machine memory operand option '" + Name + "'");
-    if (atKeyword("align")) {
-      Alignment ParsedAlignment;
-      if (parseAlignment(ParsedAlignment))
-        return true;
-      if ((static_cast<std::uint64_t>(Description.Offset) & (ParsedAlignment.bytes() - 1U)) != 0) {
-        return fail("specified alignment is more aligned than offset");
-      }
-      BaseAlignment = ParsedAlignment;
-    } else if (atKeyword("basealign")) {
-      if (parseAlignment(BaseAlignment))
-        return true;
-    } else if (atKeyword("addrspace")) {
-      advance();
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), Description.AddressSpace) ||
-          Description.AddressSpace > LLT::MaxAddressSpace) {
-        return fail("invalid machine memory operand address space");
-      }
-      advance();
-    } else if (at(MITokenKind::MetadataKeyword)) {
-      const std::string MetadataKind(token().stringValue());
-      advance();
-      MachineMetadataReference Reference;
-      if (parseMetadataReference(Reference))
-        return true;
-      if (MetadataKind == "!tbaa")
-        Description.TBAA = Reference;
-      else if (MetadataKind == "!alias.scope")
-        Description.AliasScope = Reference;
-      else if (MetadataKind == "!noalias")
-        Description.NoAlias = Reference;
-      else if (MetadataKind == "!noalias.addrspace")
-        Description.NoAliasAddressSpace = Reference;
-      else if (MetadataKind == "!range")
-        Description.RangeMetadata = Reference;
-      else
-        return fail("unsupported machine memory operand metadata attachment");
-    } else {
-      return fail("unknown machine memory operand option '" + Name + "'");
-    }
-  }
-
-  std::uint64_t EffectiveAlignment = BaseAlignment.bytes();
-  if (Description.Offset != 0) {
-    const auto OffsetBits = static_cast<std::uint64_t>(Description.Offset);
-    const std::uint64_t OffsetAlignment = std::uint64_t{1} << std::countr_zero(OffsetBits);
-    EffectiveAlignment = std::min(EffectiveAlignment, OffsetAlignment);
-  }
-  Description.Align = *Alignment::create(EffectiveAlignment);
-  if (BaseAlignment != Description.Align)
-    Description.BaseAlign = BaseAlignment;
-  else
-    Description.BaseAlign.reset();
-
-  if (expect(MITokenKind::RightParen, "')' after the machine memory operand"))
-    return true;
-
-  auto Created = Function.createMemOperand(std::move(Description));
-  if (!Created)
-    return importError(Begin, Created.error());
-  Result = *Created;
-  return false;
-}
-
-bool MIParser::Impl::parsePredicateOperand(ParsedOperand &Result, bool IsFloating) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after predicate kind"))
-    return true;
-  if (!at(MITokenKind::Identifier))
-    return fail("expected a predicate spelling");
-
-  Expected<MachineOperand> Operand = IsFloating ? [&]() -> Expected<MachineOperand> {
-    const auto Predicate = floatingPredicate(token().stringValue());
-    if (!Predicate) {
-      return makeUnexpected(ErrorCode::ParseError, "invalid floating-point predicate");
-    }
-    return MachineOperand::floatingPredicate(*Predicate);
-  }()
-      : [&]() -> Expected<MachineOperand> {
-          const auto Predicate = integerPredicate(token().stringValue());
-          if (!Predicate) {
-            return makeUnexpected(ErrorCode::ParseError, "invalid integer predicate");
-          }
-          return MachineOperand::integerPredicate(*Predicate);
-        }();
-  if (!Operand)
-    return importError(token(), Operand.error());
-  advance();
-  if (expect(MITokenKind::RightParen, "')' after predicate"))
-    return true;
-  Result = ParsedOperand{
-      std::move(*Operand), std::nullopt, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseShuffleMaskOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after shufflemask"))
-    return true;
-  std::vector<std::int32_t> Elements;
-  while (!at(MITokenKind::RightParen)) {
-    if (atKeyword("undef")) {
-      Elements.push_back(ShuffleMaskOperand::Undef);
-      advance();
-    } else {
-      std::int64_t Value = 0;
-      if (!at(MITokenKind::IntegerLiteral) || parseSigned64(token(), Value) ||
-          Value < std::numeric_limits<std::int32_t>::min() ||
-          Value > std::numeric_limits<std::int32_t>::max()) {
-        return fail("shuffle mask element must be a 32-bit integer or undef");
-      }
-      Elements.push_back(static_cast<std::int32_t>(Value));
-      advance();
-    }
-    if (!consume(MITokenKind::Comma))
-      break;
-  }
-  if (expect(MITokenKind::RightParen, "')' after shufflemask"))
-    return true;
-  auto Operand = MachineOperand::shuffleMask(std::move(Elements));
-  if (!Operand)
-    return importError(Begin, Operand.error());
-  Result = ParsedOperand{
-      std::move(*Operand), std::nullopt, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseDebugInstrRefOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after dbg-instr-ref"))
-    return true;
-  std::uint64_t Instruction = 0;
-  if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), Instruction))
-    return fail("invalid debug instruction number");
-  advance();
-  if (expect(MITokenKind::Comma, "',' in dbg-instr-ref"))
-    return true;
-  std::uint64_t OperandNumber = 0;
-  if (!at(MITokenKind::IntegerLiteral) || parseUnsigned(token(), OperandNumber))
-    return fail("invalid debug operand number");
-  advance();
-  if (expect(MITokenKind::RightParen, "')' after dbg-instr-ref"))
-    return true;
-  auto Operand = MachineOperand::debugInstrRef(Instruction, OperandNumber);
-  if (!Operand)
-    return importError(Begin, Operand.error());
-  Result = ParsedOperand{
-      std::move(*Operand), std::nullopt, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseLaneMaskOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after lanemask"))
-    return true;
-  std::uint64_t Value = 0;
-  if (parseUnsigned(token(), Value))
-    return fail("invalid 64-bit lane mask");
-  advance();
-  if (expect(MITokenKind::RightParen, "')' after lanemask"))
-    return true;
-  Result = ParsedOperand{MachineOperand::laneMask(LaneMask::fromRaw(Value)),
-                         std::nullopt,
-                         {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseIntrinsicOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after intrinsic"))
-    return true;
-  if (!at(MITokenKind::NamedGlobalValue))
-    return fail("expected a named intrinsic");
-  const auto ID = Target.mirText().intrinsic(token().stringValue());
-  if (!ID)
-    return fail("unknown intrinsic '" + std::string(token().stringValue()) + "'");
-  advance();
-  if (expect(MITokenKind::RightParen, "')' after intrinsic"))
-    return true;
-  auto Operand = MachineOperand::intrinsic(*ID);
-  if (!Operand)
-    return importError(Begin, Operand.error());
-  Result = ParsedOperand{
-      std::move(*Operand), std::nullopt, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseTargetIndexOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after target-index"))
-    return true;
-  if (!at(MITokenKind::Identifier))
-    return fail("expected a target index name");
-  const auto Index = Target.mirText().targetIndex(token().stringValue());
-  if (!Index)
-    return fail("unknown target index '" + std::string(token().stringValue()) + "'");
-  advance();
-  if (expect(MITokenKind::RightParen, "')' after target index"))
-    return true;
-  std::int64_t Offset = 0;
-  if (parseOptionalOffset(Offset))
-    return true;
-  Result = ParsedOperand{MachineOperand::targetIndex(*Index, Offset),
-                         std::nullopt,
-                         {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseCustomMaskOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after CustomRegMask"))
-    return true;
-  std::uint32_t MaximumRegister = 0;
-  for (const PhysicalRegisterDesc &Register : Target.registers().physicalRegisters())
-    MaximumRegister = std::max(MaximumRegister, Register.Reg.number());
-  std::vector<std::uint64_t> Words(MaximumRegister / 64U + 1U, 0);
-  if (!at(MITokenKind::RightParen)) {
-    do {
-      Register Reg;
-      if (!at(MITokenKind::NamedRegister) || parseRegister(Reg) || !Reg.isPhysical())
-        return fail("CustomRegMask requires physical registers");
-      const auto Physical = Reg.physicalRegister();
-      if (!Physical)
-        return fail("CustomRegMask requires physical registers");
-      const std::uint32_t Number = Physical->number();
-      Words[Number / 64U] |= std::uint64_t{1} << (Number % 64U);
-    } while (consume(MITokenKind::Comma));
-  }
-  if (expect(MITokenKind::RightParen, "')' after CustomRegMask"))
-    return true;
-  auto Operand =
-      MachineOperand::registerMask(std::make_shared<const RegisterMask>(std::move(Words)));
-  if (!Operand)
-    return importError(Begin, Operand.error());
-  Result = ParsedOperand{
-      std::move(*Operand), std::nullopt, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseLiveOutMaskOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after liveout"))
-    return true;
-  std::uint32_t MaximumRegister = 0;
-  for (const PhysicalRegisterDesc &Register : Target.registers().physicalRegisters())
-    MaximumRegister = std::max(MaximumRegister, Register.Reg.number());
-  std::vector<std::uint64_t> Words(MaximumRegister / 64U + 1U, 0);
-  do {
-    Register Reg;
-    if (!at(MITokenKind::NamedRegister) || parseRegister(Reg) || !Reg.isPhysical())
-      return fail("liveout requires physical registers");
-    const auto Physical = Reg.physicalRegister();
-    if (!Physical)
-      return fail("liveout requires physical registers");
-    const std::uint32_t Number = Physical->number();
-    Words[Number / 64U] |= std::uint64_t{1} << (Number % 64U);
-  } while (consume(MITokenKind::Comma));
-  if (expect(MITokenKind::RightParen, "')' after liveout"))
-    return true;
-  auto Operand =
-      MachineOperand::liveOutRegisterMask(std::make_shared<const RegisterMask>(std::move(Words)));
-  if (!Operand)
-    return importError(Begin, Operand.error());
-  Result = ParsedOperand{
-      std::move(*Operand), std::nullopt, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseBlockAddressOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  advance();
-  if (expect(MITokenKind::LeftParen, "'(' after blockaddress"))
-    return true;
-  if (!at(MITokenKind::GlobalValue) && !at(MITokenKind::NamedGlobalValue))
-    return fail("blockaddress requires a function reference");
-  const std::string FunctionName = symbolName(token());
-  advance();
-  if (expect(MITokenKind::Comma, "',' in blockaddress"))
-    return true;
-  if (!at(MITokenKind::IRBlock) && !at(MITokenKind::NamedIRBlock))
-    return fail("blockaddress requires an IR block reference");
-  const std::string BlockName = symbolName(token());
-  advance();
-  if (expect(MITokenKind::RightParen, "')' after blockaddress"))
-    return true;
-  std::int64_t Offset = 0;
-  if (parseOptionalOffset(Offset))
-    return true;
-  auto Operand = MachineOperand::blockAddress(FunctionName, BlockName, Offset);
-  if (!Operand)
-    return importError(Begin, Operand.error());
-  Result = ParsedOperand{
-      std::move(*Operand), std::nullopt, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseOperand(bool IsDef, ParsedOperand &Result) {
-  const MIToken Begin = token();
-  if (token().isRegister() || token().isRegisterFlag())
-    return parseRegisterOperand(IsDef, Result);
-
-  std::uint32_t TargetFlags = 0;
-  if (parseTargetFlags(TargetFlags))
-    return true;
-  const MIToken OperandToken = token();
-  if (isFloatingSemanticsKeyword(OperandToken)) {
-    if (parseFloatingImmediateOperand(Result))
-      return true;
-    Result.Operand.setTargetFlags(TargetFlags);
-    return false;
-  }
-  if (OperandToken.kind() == MITokenKind::Exclaim ||
-      (OperandToken.kind() == MITokenKind::MetadataKeyword &&
-       OperandToken.isMetadataKeyword("!DIExpression"))) {
-    if (parseMetadataOperand(Result))
-      return true;
-    Result.Operand.setTargetFlags(TargetFlags);
-    return false;
-  }
-  if (isCFIOperationToken(OperandToken)) {
-    if (parseCFIOperand(Result))
-      return true;
-    Result.Operand.setTargetFlags(TargetFlags);
-    return false;
-  }
-  MachineOperand Operand = MachineOperand::immediate(0);
-  bool HasOperand = true;
-
-  switch (OperandToken.kind()) {
-  case MITokenKind::IntegerLiteral: {
-    std::int64_t Value = 0;
-    if (parseSigned64(OperandToken, Value))
-      return fail("integer literal is too large for a machine immediate");
-    Operand = MachineOperand::immediate(Value, TargetFlags);
-    advance();
-    break;
-  }
-  case MITokenKind::MachineBasicBlock: {
-    MachineBasicBlock *Block = blockFor(OperandToken);
-    if (Block == nullptr)
-      return true;
-    Operand = MachineOperand::basicBlock(*Block, TargetFlags);
-    advance();
-    break;
-  }
-  case MITokenKind::StackObject:
-  case MITokenKind::FixedStackObject: {
-    const bool Fixed = OperandToken.kind() == MITokenKind::FixedStackObject;
-    const auto Index = frameIndexFor(OperandToken, Fixed);
-    if (!Index)
-      return true;
-    advance();
-    std::int64_t Offset = 0;
-    if (parseOptionalOffset(Offset))
-      return true;
-    Operand = MachineOperand::frameIndex(*Index, Offset, TargetFlags);
-    break;
-  }
-  case MITokenKind::ConstantPoolItem: {
-    const auto Index = constantPoolIndexFor(OperandToken);
-    if (!Index)
-      return true;
-    advance();
-    std::int64_t Offset = 0;
-    if (parseOptionalOffset(Offset))
-      return true;
-    Operand = MachineOperand::constantPool(*Index, Offset, TargetFlags);
-    break;
-  }
-  case MITokenKind::JumpTableIndex: {
-    const auto Index = jumpTableIndexFor(OperandToken);
-    if (!Index)
-      return true;
-    Operand = MachineOperand::jumpTable(*Index, TargetFlags);
-    advance();
-    break;
-  }
-  case MITokenKind::NamedGlobalValue:
-  case MITokenKind::GlobalValue: {
-    const std::string Name = symbolName(OperandToken);
-    advance();
-    std::int64_t Offset = 0;
-    if (parseOptionalOffset(Offset))
-      return true;
-    auto Created = MachineOperand::globalSymbol(Name, Offset, TargetFlags);
-    if (!Created)
-      return importError(OperandToken, Created.error());
-    Operand = std::move(*Created);
-    break;
-  }
-  case MITokenKind::ExternalSymbol: {
-    const std::string Name = symbolName(OperandToken);
-    advance();
-    std::int64_t Offset = 0;
-    if (parseOptionalOffset(Offset))
-      return true;
-    auto Created = MachineOperand::externalSymbol(Name, Offset, TargetFlags);
-    if (!Created)
-      return importError(OperandToken, Created.error());
-    Operand = std::move(*Created);
-    break;
-  }
-  case MITokenKind::MCSymbol: {
-    const std::string Name = symbolName(OperandToken);
-    advance();
-    std::int64_t Offset = 0;
-    if (parseOptionalOffset(Offset))
-      return true;
-    auto Created = MachineOperand::mcSymbol(Name, Offset, TargetFlags);
-    if (!Created)
-      return importError(OperandToken, Created.error());
-    Operand = std::move(*Created);
-    break;
-  }
-  case MITokenKind::SubRegisterIndex: {
-    const SubRegIndexDesc *Description = Target.registers().subRegIndex(OperandToken.stringValue());
-    if (Description == nullptr)
-      return fail("unknown subregister index '" + std::string(OperandToken.stringValue()) + "'");
-    Operand =
-        MachineOperand::immediate(static_cast<std::int64_t>(Description->ID.value()), TargetFlags);
-    advance();
-    break;
-  }
-  case MITokenKind::Identifier: {
-    if (const auto Mask = Target.mirText().registerMask(OperandToken.stringValue())) {
-      auto Created = MachineOperand::registerMask(Mask, TargetFlags);
-      if (!Created)
-        return importError(OperandToken, Created.error());
-      Operand = std::move(*Created);
-      advance();
-    } else if (OperandToken.stringValue() == "CustomRegMask") {
-      if (TargetFlags != 0)
-        return fail("custom register masks cannot have target flags");
-      return parseCustomMaskOperand(Result);
-    } else if (OperandToken.stringValue().starts_with('i')) {
-      if (parseTypedIntegerOperand(Result))
-        return true;
-      Result.Operand.setTargetFlags(TargetFlags);
-      return false;
-    } else {
-      return fail("unknown named machine operand '" + std::string(OperandToken.stringValue()) +
-                  "'");
-    }
-    break;
-  }
-  case MITokenKind::Keyword:
-    HasOperand = false;
-    break;
-  default:
-    return fail("expected a machine operand");
-  }
-
-  if (!HasOperand) {
-    bool Failed = false;
-    if (OperandToken.isKeyword("intpred"))
-      Failed = parsePredicateOperand(Result, false);
-    else if (OperandToken.isKeyword("floatpred"))
-      Failed = parsePredicateOperand(Result, true);
-    else if (OperandToken.isKeyword("shufflemask"))
-      Failed = parseShuffleMaskOperand(Result);
-    else if (OperandToken.isKeyword("dbg-instr-ref"))
-      Failed = parseDebugInstrRefOperand(Result);
-    else if (OperandToken.isKeyword("lanemask"))
-      Failed = parseLaneMaskOperand(Result);
-    else if (OperandToken.isKeyword("intrinsic"))
-      Failed = parseIntrinsicOperand(Result);
-    else if (OperandToken.isKeyword("target-index"))
-      Failed = parseTargetIndexOperand(Result);
-    else if (OperandToken.isKeyword("liveout"))
-      Failed = parseLiveOutMaskOperand(Result);
-    else if (OperandToken.isKeyword("blockaddress"))
-      Failed = parseBlockAddressOperand(Result);
-    else
-      return fail("unsupported machine operand spelling '" + std::string(OperandToken.spelling()) +
-                  "'");
-    if (!Failed)
-      Result.Operand.setTargetFlags(TargetFlags);
-    return Failed;
-  }
-
-  Result =
-      ParsedOperand{std::move(Operand), std::nullopt, {Begin.range().Begin, token().range().Begin}};
-  return false;
-}
-
-bool MIParser::Impl::parseInlineAsmExtraInfoOperand(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  InlineAsmExtraInfo ExtraInfo;
-  while (at(MITokenKind::Identifier)) {
-    const auto Bits = InlineAsmExtraInfo::namedFlagBits(token().stringValue());
-    if (!Bits) {
-      return fail("unknown inline asm extra info flag '" + std::string(token().stringValue()) +
-                  "'");
-    }
-    ExtraInfo = InlineAsmExtraInfo(ExtraInfo.rawValue() | *Bits);
-    advance();
-  }
-  Result = ParsedOperand{
-      MachineOperand::immediate(static_cast<std::int64_t>(ExtraInfo.rawValue())),
-      std::nullopt,
-      {Begin.range().Begin, token().range().Begin},
-  };
-  return false;
-}
-
-bool MIParser::Impl::parseInlineAsmOperandFlag(ParsedOperand &Result) {
-  const MIToken Begin = token();
-  const std::string KindName(token().stringValue());
-  const auto Kind = InlineAsmOperandFlag::kindForName(KindName);
-  if (!Kind)
-    return fail("unknown inline asm operand kind '" + KindName + "'");
-  advance();
-
-  InlineAsmOperandFlag Flag(*Kind);
-  if (at(MITokenKind::Identifier) && token().stringValue() == "tiedto") {
-    advance();
-    if (!consume(MITokenKind::Colon))
-      return fail("expected ':' after 'tiedto'");
-    if (!at(MITokenKind::NamedRegister))
-      return fail("expected '$N' operand number after 'tiedto:'");
-    std::uint64_t OperandNumber = 0;
-    if (!parseUnsignedDecimal(token().stringValue(), OperandNumber) ||
-        OperandNumber > std::numeric_limits<std::uint32_t>::max() ||
-        !Flag.setMatchingOperand(static_cast<std::uint32_t>(OperandNumber))) {
-      return fail("invalid operand number in tiedto constraint");
-    }
-    advance();
-  } else if (consume(MITokenKind::Colon)) {
-    if (!at(MITokenKind::Identifier))
-      return fail("expected register class or memory constraint name after ':'");
-    const std::string Constraint(token().stringValue());
-    if (*Kind == InlineAsmOperandKind::Memory) {
-      const auto MemoryConstraint = InlineAsmOperandFlag::memoryConstraintForName(Constraint);
-      if (!MemoryConstraint)
-        return fail("unknown memory constraint '" + Constraint + "'");
-      if (!Flag.setMemoryConstraint(*MemoryConstraint))
-        return fail("invalid memory constraint encoding");
-    } else if (*Kind == InlineAsmOperandKind::RegisterDef ||
-               *Kind == InlineAsmOperandKind::RegisterUse ||
-               *Kind == InlineAsmOperandKind::RegisterDefEarlyClobber) {
-      const RegisterClassDesc *RegisterClass = Target.registers().registerClass(Constraint);
-      if (RegisterClass == nullptr)
-        return fail("unknown register class '" + Constraint + "'");
-      if (!Flag.setRegisterClass(RegisterClass->ID.value()))
-        return fail("register class cannot be encoded in an inline asm operand flag");
-    }
-    advance();
-  }
-
-  Result = ParsedOperand{
-      MachineOperand::immediate(static_cast<std::int64_t>(Flag.rawValue())),
-      std::nullopt,
-      {Begin.range().Begin, token().range().Begin},
-  };
-  return false;
-}
-
-bool MIParser::Impl::parseBlockLiveIns(MachineBasicBlock &Block) {
-  advance();
-  if (expect(MITokenKind::Colon, "':' after liveins"))
-    return true;
-  if (token().isNewlineOrEnd())
-    return false;
-  do {
-    if (!at(MITokenKind::NamedRegister))
-      return fail("expected a physical register in liveins");
-    Register Reg;
-    if (parseRegister(Reg) || !Reg.isPhysical())
-      return true;
-    const auto Physical = Reg.physicalRegister();
-    if (!Physical)
-      return fail("expected a physical register in liveins");
-    LaneMask Lanes = LaneMask::all();
-    if (consume(MITokenKind::Colon)) {
-      std::uint64_t Raw = 0;
-      if (parseUnsigned(token(), Raw))
-        return fail("invalid live-in lane mask");
-      Lanes = LaneMask::fromRaw(Raw);
-      advance();
-    }
-    auto Added = Block.addLiveIn(*Physical, Lanes);
-    if (!Added)
-      return importError(token(), Added.error());
-  } while (consume(MITokenKind::Comma));
-  return false;
-}
-
-bool MIParser::Impl::parseBlockSuccessors(MachineBasicBlock &Block) {
-  advance();
-  if (expect(MITokenKind::Colon, "':' after successors"))
-    return true;
-  ExplicitSuccessorBlocks.insert(&Block);
-  if (token().isNewlineOrEnd())
-    return false;
-  do {
-    if (!at(MITokenKind::MachineBasicBlock))
-      return fail("expected a machine basic block reference");
-    MachineBasicBlock *Successor = blockFor(token());
-    if (Successor == nullptr)
-      return true;
-    advance();
-    BranchProbability Probability = BranchProbability::zero();
-    if (consume(MITokenKind::LeftParen)) {
-      std::uint32_t Weight = 0;
-      if (parseUnsigned32(token(), Weight))
-        return fail("expected unsigned integer");
-      Probability = BranchProbability::fromRaw(Weight);
-      advance();
-      if (expect(MITokenKind::RightParen, "')' after successor weight"))
-        return true;
-    }
-    auto Added = Function.cfgUpdater().addSuccessor(Block, *Successor, Probability);
-    if (!Added)
-      return importError(token(), Added.error());
-  } while (consume(MITokenKind::Comma));
-  return false;
-}
-
-bool MIParser::Impl::parseInstruction(MachineBasicBlock &Block, bool InBundle,
-                                      MachineInstr *PreviousInstruction, MachineInstr *&Result) {
-  if (ParsedInstructionCount >= Options.MaximumInstructions)
-    return fail("machine instruction count exceeds parser limit");
-
-  std::vector<ParsedOperand> Operands;
-  while (token().isRegister() || token().isRegisterFlag()) {
-    ParsedOperand Operand{MachineOperand::immediate(0), std::nullopt, {}};
-    if (parseRegisterOperand(true, Operand))
-      return true;
-    Operands.push_back(std::move(Operand));
-    if (!consume(MITokenKind::Comma))
-      break;
-  }
-  if (!Operands.empty() && expect(MITokenKind::Equal, "'=' after register definitions"))
-    return true;
-
-  MachineInstrFlags Flags;
-  while (isInstructionFlag(token())) {
-    const auto Flag = instructionFlag(token().stringValue());
-    if (!Flag)
-      return fail("unknown instruction flag");
-    if (Flags.has(*Flag))
-      return fail("duplicate instruction flag '" + std::string(token().stringValue()) + "'");
-    Flags.set(*Flag);
-    advance();
-  }
-  if (!at(MITokenKind::Identifier))
-    return fail("expected a machine instruction name");
-  const MIToken OpcodeToken = token();
-  const InstructionDescriptor *Descriptor =
-      Target.instructions().descriptor(OpcodeToken.stringValue());
-  if (Descriptor == nullptr)
-    return fail("unknown machine instruction '" + std::string(OpcodeToken.stringValue()) + "'");
-  advance();
-  const bool IsInlineAsm = Descriptor->Name == "INLINEASM" || Descriptor->Name == "INLINEASM_BR";
-
-  while (!token().isNewlineOrEnd() && !at(MITokenKind::DoubleColon) &&
-         !at(MITokenKind::LeftBrace) && !atKeyword("debug-instr-number") &&
-         !atKeyword("debug-location") && !atKeyword("pre-instr-symbol") &&
-         !atKeyword("post-instr-symbol") && !atKeyword("heap-alloc-marker") &&
-         !atKeyword("pcsections") && !atKeyword("mmra") && !atKeyword("cfi-type") &&
-         !atKeyword("deactivation-symbol")) {
-    if (Operands.size() >= Options.MaximumOperandsPerInstruction)
-      return fail("instruction operand count exceeds parser limit");
-    ParsedOperand Operand{MachineOperand::immediate(0), std::nullopt, {}};
-    const bool IsInlineAsmExtraInfo = IsInlineAsm &&
-                                      Operands.size() == InlineAsmExtraInfoOperandIndex &&
-                                      at(MITokenKind::Identifier);
-    const bool IsInlineAsmOperandFlag = IsInlineAsm &&
-                                        Operands.size() >= InlineAsmFirstConstraintOperandIndex &&
-                                        at(MITokenKind::Identifier);
-    if (IsInlineAsmExtraInfo ? parseInlineAsmExtraInfoOperand(Operand)
-                             : (IsInlineAsmOperandFlag ? parseInlineAsmOperandFlag(Operand)
-                                                       : parseOperand(false, Operand)))
-      return true;
-    Operands.push_back(std::move(Operand));
-    if (token().isNewlineOrEnd() || at(MITokenKind::DoubleColon) || at(MITokenKind::LeftBrace) ||
-        atKeyword("debug-instr-number") || atKeyword("debug-location"))
-      break;
-    if (expect(MITokenKind::Comma, "',' before the next machine operand"))
-      return true;
-  }
-
-  std::uint32_t DebugNumber = 0;
-  std::optional<MachineDebugLocation> DebugLocation;
-  std::optional<std::string> PreInstrSymbol;
-  std::optional<std::string> PostInstrSymbol;
-  std::optional<MachineMetadataReference> HeapAllocMarker;
-  std::optional<MachineMetadataReference> PCSections;
-  std::optional<MachineMetadataReference> MMRA;
-  std::optional<std::uint32_t> CFIType;
-  std::optional<std::string> DeactivationSymbol;
-  std::unordered_set<std::string> SeenAttachments;
-  while (atKeyword("debug-instr-number") || atKeyword("debug-location") ||
-         atKeyword("pre-instr-symbol") || atKeyword("post-instr-symbol") ||
-         atKeyword("heap-alloc-marker") || atKeyword("pcsections") || atKeyword("mmra") ||
-         atKeyword("cfi-type") || atKeyword("deactivation-symbol")) {
-    const std::string Name(token().stringValue());
-    if (!SeenAttachments.insert(Name).second)
-      return fail("duplicate instruction attachment '" + Name + "'");
-    advance();
-    if (Name == "debug-instr-number") {
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), DebugNumber) ||
-          DebugNumber == 0) {
-        return fail("invalid debug instruction number");
-      }
-      advance();
-    } else if (Name == "debug-location") {
-      if (at(MITokenKind::MetadataKeyword) && token().isMetadataKeyword("!DILocation")) {
-        std::vector<MachineDILocationFrame> InlineChain;
-        std::optional<MachineMetadataReference> TerminalInlinedAt;
-        if (parseInlineDILocation(InlineChain, TerminalInlinedAt))
-          return true;
-        auto Location = MachineDILocation::create(std::move(InlineChain), TerminalInlinedAt);
-        if (!Location)
-          return importError(OpcodeToken, Location.error());
-        DebugLocation = MachineDebugLocation::inlineLocation(std::move(*Location));
-      } else {
-        MachineMetadataReference Reference;
-        if (parseMetadataReference(Reference))
-          return true;
-        auto Created = MachineDebugLocation::reference(Reference);
-        if (!Created)
-          return importError(OpcodeToken, Created.error());
-        DebugLocation = std::move(*Created);
-      }
-    } else if (Name == "pre-instr-symbol" || Name == "post-instr-symbol") {
-      if (!at(MITokenKind::MCSymbol))
-        return fail("expected an MC symbol after '" + Name + "'");
-      if (Name == "pre-instr-symbol")
-        PreInstrSymbol = symbolName(token());
-      else
-        PostInstrSymbol = symbolName(token());
-      advance();
-    } else if (Name == "heap-alloc-marker" || Name == "pcsections" || Name == "mmra") {
-      MachineMetadataReference Reference;
-      if (parseMetadataReference(Reference))
-        return true;
-      if (Name == "heap-alloc-marker")
-        HeapAllocMarker = Reference;
-      else if (Name == "pcsections")
-        PCSections = Reference;
-      else
-        MMRA = Reference;
-    } else if (Name == "cfi-type") {
-      std::uint32_t Type = 0;
-      if (!at(MITokenKind::IntegerLiteral) || parseUnsigned32(token(), Type) || Type == 0)
-        return fail("invalid nonzero CFI type");
-      CFIType = Type;
-      advance();
-    } else {
-      if (!at(MITokenKind::GlobalValue) && !at(MITokenKind::NamedGlobalValue))
-        return fail("expected a global value after 'deactivation-symbol'");
-      DeactivationSymbol = symbolName(token());
-      advance();
-    }
-    static_cast<void>(consume(MITokenKind::Comma));
-  }
-  std::vector<const MachineMemOperand *> MemOperands;
-  if (consume(MITokenKind::DoubleColon)) {
-    while (!token().isNewlineOrEnd() && !at(MITokenKind::LeftBrace)) {
-      if (MemOperands.size() >= Options.MaximumMemoryOperandsPerInstruction)
-        return fail("machine memory operand count exceeds parser limit");
-      const MachineMemOperand *MemOperand = nullptr;
-      if (parseMemoryOperand(MemOperand, Descriptor->InstructionOpcode))
-        return true;
-      MemOperands.push_back(MemOperand);
-      if (token().isNewlineOrEnd() || at(MITokenKind::LeftBrace))
-        break;
-      if (expect(MITokenKind::Comma, "',' before the next machine memory operand"))
-        return true;
-    }
-  }
-
-  auto Created = Function.createInstruction(Descriptor->InstructionOpcode);
-  if (!Created)
-    return importError(OpcodeToken, Created.error());
-  MachineInstr *Instruction = *Created;
-  Instruction->setFlags(Flags);
-  for (ParsedOperand &Parsed : Operands) {
-    auto Added = Instruction->addOperand(std::move(Parsed.Operand));
-    if (!Added)
-      return importError(OpcodeToken, Added.error());
-  }
-  for (std::size_t Index = 0; Index < Operands.size(); ++Index) {
-    if (!Operands[Index].TiedDef)
-      continue;
-    if (*Operands[Index].TiedDef >= Operands.size())
-      return fail(OpcodeToken, "tied-def operand index is out of range");
-    auto Tied = Instruction->tieOperands(*Operands[Index].TiedDef, Index);
-    if (!Tied)
-      return importError(OpcodeToken, Tied.error());
-  }
-  for (const MachineMemOperand *MemOperand : MemOperands) {
-    auto Added = Instruction->addMemOperand(*MemOperand);
-    if (!Added)
-      return importError(OpcodeToken, Added.error());
-  }
-  if (DebugNumber != 0) {
-    auto SetNumber = Instruction->setDebugInstrNumber(DebugNumber);
-    if (!SetNumber)
-      return importError(OpcodeToken, SetNumber.error());
-  }
-  if (DebugLocation) {
-    auto SetLocation = Instruction->setDebugLocation(std::move(*DebugLocation));
-    if (!SetLocation)
-      return importError(OpcodeToken, SetLocation.error());
-  }
-  if (PreInstrSymbol) {
-    auto SetSymbol = Instruction->setPreInstrSymbol(std::move(*PreInstrSymbol));
-    if (!SetSymbol)
-      return importError(OpcodeToken, SetSymbol.error());
-  }
-  if (PostInstrSymbol) {
-    auto SetSymbol = Instruction->setPostInstrSymbol(std::move(*PostInstrSymbol));
-    if (!SetSymbol)
-      return importError(OpcodeToken, SetSymbol.error());
-  }
-  if (HeapAllocMarker) {
-    auto SetMarker = Instruction->setHeapAllocMarker(*HeapAllocMarker);
-    if (!SetMarker)
-      return importError(OpcodeToken, SetMarker.error());
-  }
-  if (PCSections) {
-    auto SetSections = Instruction->setPCSections(*PCSections);
-    if (!SetSections)
-      return importError(OpcodeToken, SetSections.error());
-  }
-  if (MMRA) {
-    auto SetMMRA = Instruction->setMMRA(*MMRA);
-    if (!SetMMRA)
-      return importError(OpcodeToken, SetMMRA.error());
-  }
-  if (CFIType) {
-    auto SetType = Instruction->setCFIType(*CFIType);
-    if (!SetType)
-      return importError(OpcodeToken, SetType.error());
-  }
-  if (DeactivationSymbol) {
-    auto SetSymbol = Instruction->setDeactivationSymbol(std::move(*DeactivationSymbol));
-    if (!SetSymbol)
-      return importError(OpcodeToken, SetSymbol.error());
-  }
-  if (InBundle) {
-    Flags.set(MachineInstrFlag::BundledWithPred);
-    Instruction->setFlags(Flags);
-    if (PreviousInstruction != nullptr) {
-      MachineInstrFlags PreviousFlags = PreviousInstruction->flags();
-      PreviousFlags.set(MachineInstrFlag::BundledWithSucc);
-      PreviousInstruction->setFlags(PreviousFlags);
-    }
-  }
-  auto Appended = Block.appendInstruction(*Instruction);
-  if (!Appended)
-    return importError(OpcodeToken, Appended.error());
-
-  ++ParsedInstructionCount;
-  Result = Instruction;
-  return false;
-}
-
-bool MIParser::Impl::parseSecondPass() {
-  Position = 0;
-  while (consume(MITokenKind::Newline)) {
-  }
-  while (!at(MITokenKind::EndOfFile)) {
-    if (!at(MITokenKind::MachineBasicBlockLabel))
-      return fail("expected a machine basic block definition");
-    std::uint32_t ID = 0;
-    if (parseBlockDefinition(false, ID))
-      return true;
-    MachineBasicBlock *Block = Blocks.at(ID);
-
-    while (consume(MITokenKind::Newline)) {
-    }
-    while (atKeyword("liveins") || atKeyword("successors")) {
-      if ((atKeyword("liveins") && parseBlockLiveIns(*Block)) ||
-          (atKeyword("successors") && parseBlockSuccessors(*Block))) {
-        return true;
-      }
-      if (!token().isNewlineOrEnd())
-        return fail("expected a line break after the block list");
-      while (consume(MITokenKind::Newline)) {
-      }
-    }
-
-    bool InBundle = false;
-    MachineInstr *PreviousInstruction = nullptr;
-    while (!at(MITokenKind::MachineBasicBlockLabel) && !at(MITokenKind::EndOfFile)) {
-      if (consume(MITokenKind::Newline))
-        continue;
-      if (consume(MITokenKind::RightBrace)) {
-        if (!InBundle)
-          return fail("closing brace without an active instruction bundle");
-        InBundle = false;
-        continue;
-      }
-
-      MachineInstr *Instruction = nullptr;
-      if (parseInstruction(*Block, InBundle, PreviousInstruction, Instruction))
-        return true;
-      PreviousInstruction = Instruction;
-      if (consume(MITokenKind::LeftBrace)) {
-        if (InBundle)
-          return fail("nested instruction bundles are not allowed");
-        MachineInstrFlags BundleFlags = Instruction->flags();
-        BundleFlags.set(MachineInstrFlag::BundledWithSucc);
-        Instruction->setFlags(BundleFlags);
-        InBundle = true;
-      }
-      if (!token().isNewlineOrEnd() && !at(MITokenKind::RightBrace))
-        return fail("expected a line break after the machine instruction");
-    }
-    if (InBundle)
-      return fail("unterminated instruction bundle");
-  }
-  return false;
-}
-
-bool MIParser::Impl::inferSuccessors() {
-  for (MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr; Block = Block->next()) {
-    if (ExplicitSuccessorBlocks.contains(Block))
-      continue;
-
-    bool BlocksFallthrough = true;
-    std::vector<MachineBasicBlock *> Successors;
-    for (MachineInstr *Instruction = Block->firstInstruction(); Instruction != nullptr;
-         Instruction = Instruction->next()) {
-      const InstructionDescriptor *Descriptor =
-          Target.instructions().descriptor(Instruction->opcode());
-      if (Descriptor == nullptr)
-        return fail("instruction has no target descriptor while inferring successors");
-      if (Descriptor->Flags.has(InstructionFlag::Branch)) {
-        for (const MachineOperand &Operand : Instruction->operands()) {
-          if (const BasicBlockOperand *TargetBlock = Operand.getIf<BasicBlockOperand>()) {
-            if (std::ranges::find(Successors, TargetBlock->Block) == Successors.end())
-              Successors.push_back(TargetBlock->Block);
-          }
-        }
-      }
-      if (Descriptor->Flags.has(InstructionFlag::Barrier))
-        BlocksFallthrough = false;
-    }
-    if (BlocksFallthrough && Block->next() != nullptr &&
-        std::ranges::find(Successors, Block->next()) == Successors.end())
-      Successors.push_back(Block->next());
-    if (Successors.empty())
-      continue;
-    const auto Probability =
-        BranchProbability::fromFraction(1U, static_cast<std::uint32_t>(Successors.size()));
-    if (!Probability)
-      return importError(token(), Probability.error());
-    for (MachineBasicBlock *Successor : Successors) {
-      auto Added = Function.cfgUpdater().addSuccessor(*Block, *Successor, *Probability);
-      if (!Added)
-        return importError(token(), Added.error());
-    }
-  }
-  return false;
-}
-
-Expected<void> MIParser::Impl::parse() {
-  if (ParseAttempted)
-    return makeUnexpected(ErrorCode::InvalidArgument, "MI parser can only be run once");
-  ParseAttempted = true;
-  if (Function.blockCount() != 0 || !Function.allInstructions().empty()) {
-    return makeUnexpected(ErrorCode::InvalidArgument,
-                          "MI parser requires a staging machine function with an empty body");
-  }
-  for (const MIVirtualRegisterSlot &Slot : Context.VirtualRegisters) {
-    if (!Slot.Reg.isVirtual() || !Function.registerInfo().isKnownVirtualRegister(Slot.Reg)) {
-      return makeUnexpected(ErrorCode::InvalidArgument,
-                            "MI parser virtual-register slot maps to an unknown register");
-    }
-    if (!NumericVirtualRegisters.emplace(Slot.TextID, Slot.Reg).second) {
-      return makeUnexpected(ErrorCode::InvalidArgument,
-                            "MI parser virtual-register text IDs must be unique");
-    }
-  }
-  if (tokenize())
-    return failureResult();
-  if (parseFirstPass() || parseSecondPass() || inferSuccessors())
-    return failureResult();
-
-  Function.renumberBlocks();
-  if (Options.VerifyAfterParse) {
-    auto Verified =
-        MachineVerifier::verify(Function, Target,
-                                MachineVerifierOptions{.Mode = MachineVerifierMode::Generic,
-                                                       .Stage = std::nullopt,
-                                                       .VerifyProperties = false});
-    if (!Verified) {
-      static_cast<void>(fail(token(), "parsed machine function failed verification: " +
-                                          std::string(Verified.error().message())));
-      return failureResult();
-    }
-  }
-  return {};
-}
-
-MIParser::MIParser(MachineFunction &Function, const TargetDescription &Target,
-                   std::string SourceName, std::string SourceText, MIParserContext Context,
-                   MIParserOptions Options)
-    : Implementation(std::make_unique<Impl>(Function, Target, std::move(SourceName),
-                                            std::move(SourceText), std::move(Context), Options)) {}
-
-MIParser::MIParser(MIParser &&) noexcept = default;
-
-MIParser &MIParser::operator=(MIParser &&) noexcept = default;
-
-MIParser::~MIParser() = default;
-
-Expected<void> MIParser::parse() {
-  return Implementation->parse();
-}
-
-const TextSource &MIParser::source() const noexcept {
-  return Implementation->source();
-}
-
-std::span<const TextDiagnostic> MIParser::diagnostics() const noexcept {
-  return Implementation->diagnostics();
-}
-
-bool MIParser::failed() const noexcept {
-  return Implementation->failed();
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIPrinter.cpp b/backend/lib/MIR/MIPrinter.cpp
deleted file mode 100644
index 0265564..0000000
--- a/backend/lib/MIR/MIPrinter.cpp
+++ /dev/null
@@ -1,1694 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "rcc/MIR/MIPrinter.h"
-
-#include "rcc/CodeGen/InlineAsm.h"
-#include "rcc/CodeGen/InstructionDescriptor.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineCFIInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineMemOperand.h"
-#include "rcc/CodeGen/MachineOperand.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/MachineVerifier.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-#include "rcc/MIR/MIDebugSyntax.h"
-
-#include <algorithm>
-#include <array>
-#include <bit>
-#include <cstddef>
-#include <cstdint>
-#include <limits>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <unordered_map>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-namespace {
-
-[[nodiscard]] bool isBareNameCharacter(char Character) noexcept {
-  return (Character >= 'a' && Character <= 'z') || (Character >= 'A' && Character <= 'Z') ||
-         (Character >= '0' && Character <= '9') || Character == '_' || Character == '-' ||
-         Character == '.' || Character == '$';
-}
-
-[[nodiscard]] std::string quoteName(std::string_view Name) {
-  if (!Name.empty() && std::ranges::all_of(Name, isBareNameCharacter))
-    return std::string(Name);
-
-  constexpr std::string_view Hex = "0123456789ABCDEF";
-  std::string Result;
-  Result.reserve(Name.size() + 2U);
-  Result.push_back('"');
-  for (const char RawCharacter : Name) {
-    const auto Character = static_cast<unsigned char>(RawCharacter);
-    if (Character >= 0x20U && Character <= 0x7EU && Character != '"' && Character != '\\') {
-      Result.push_back(static_cast<char>(Character));
-      continue;
-    }
-    Result.push_back('\\');
-    Result.push_back(Hex[Character >> 4U]);
-    Result.push_back(Hex[Character & 0xFU]);
-  }
-  Result.push_back('"');
-  return Result;
-}
-
-[[nodiscard]] std::string quoteString(std::string_view Value) {
-  std::string Result = quoteName(Value);
-  if (!Result.empty() && Result.front() == '"')
-    return Result;
-  Result.insert(Result.begin(), '"');
-  Result.push_back('"');
-  return Result;
-}
-
-[[nodiscard]] std::string hexadecimalWords(std::span<const std::uint64_t> Words,
-                                           std::uint32_t BitWidth) {
-  constexpr std::string_view Hex = "0123456789ABCDEF";
-  const std::size_t DigitCount = (static_cast<std::size_t>(BitWidth) + 3U) / 4U;
-  std::string Result(DigitCount, '0');
-  for (std::size_t Digit = 0; Digit < DigitCount; ++Digit) {
-    const std::size_t BitOffset = Digit * 4U;
-    const std::uint64_t Nibble = (Words[BitOffset / 64U] >> (BitOffset % 64U)) & 0xFU;
-    Result[DigitCount - Digit - 1U] = Hex[Nibble];
-  }
-  return Result;
-}
-
-[[nodiscard]] std::string_view integerPredicateName(IntegerPredicate Predicate) noexcept {
-  switch (Predicate) {
-  case IntegerPredicate::Equal:
-    return "eq";
-  case IntegerPredicate::NotEqual:
-    return "ne";
-  case IntegerPredicate::SignedGreaterThan:
-    return "sgt";
-  case IntegerPredicate::SignedGreaterEqual:
-    return "sge";
-  case IntegerPredicate::SignedLessThan:
-    return "slt";
-  case IntegerPredicate::SignedLessEqual:
-    return "sle";
-  case IntegerPredicate::UnsignedGreaterThan:
-    return "ugt";
-  case IntegerPredicate::UnsignedGreaterEqual:
-    return "uge";
-  case IntegerPredicate::UnsignedLessThan:
-    return "ult";
-  case IntegerPredicate::UnsignedLessEqual:
-    return "ule";
-  case IntegerPredicate::Count:
-    return {};
-  }
-  return {};
-}
-
-[[nodiscard]] std::string_view floatingPredicateName(FloatingPredicate Predicate) noexcept {
-  switch (Predicate) {
-  case FloatingPredicate::AlwaysFalse:
-    return "false";
-  case FloatingPredicate::OrderedEqual:
-    return "oeq";
-  case FloatingPredicate::OrderedGreaterThan:
-    return "ogt";
-  case FloatingPredicate::OrderedGreaterEqual:
-    return "oge";
-  case FloatingPredicate::OrderedLessThan:
-    return "olt";
-  case FloatingPredicate::OrderedLessEqual:
-    return "ole";
-  case FloatingPredicate::OrderedNotEqual:
-    return "one";
-  case FloatingPredicate::Ordered:
-    return "ord";
-  case FloatingPredicate::Unordered:
-    return "uno";
-  case FloatingPredicate::UnorderedEqual:
-    return "ueq";
-  case FloatingPredicate::UnorderedGreaterThan:
-    return "ugt";
-  case FloatingPredicate::UnorderedGreaterEqual:
-    return "uge";
-  case FloatingPredicate::UnorderedLessThan:
-    return "ult";
-  case FloatingPredicate::UnorderedLessEqual:
-    return "ule";
-  case FloatingPredicate::UnorderedNotEqual:
-    return "une";
-  case FloatingPredicate::AlwaysTrue:
-    return "true";
-  case FloatingPredicate::Count:
-    return {};
-  }
-  return {};
-}
-
-[[nodiscard]] std::string_view atomicOrderingName(AtomicOrdering Ordering) noexcept {
-  switch (Ordering) {
-  case AtomicOrdering::Unordered:
-    return "unordered";
-  case AtomicOrdering::Monotonic:
-    return "monotonic";
-  case AtomicOrdering::Acquire:
-    return "acquire";
-  case AtomicOrdering::Release:
-    return "release";
-  case AtomicOrdering::AcquireRelease:
-    return "acq_rel";
-  case AtomicOrdering::SequentiallyConsistent:
-    return "seq_cst";
-  case AtomicOrdering::NotAtomic:
-    return {};
-  }
-  return {};
-}
-
-[[nodiscard]] Expected<std::string> llvmMIRScalarLowLevelType(LLT Type) {
-  if (Type.isToken())
-    return "s0";
-  if (Type.isAnyScalar())
-    return "s" + std::to_string(Type.scalarBitWidth());
-  if (Type.isInteger())
-    return "i" + std::to_string(Type.scalarBitWidth());
-  if (Type.isPointer()) {
-    const auto AddressSpace = Type.addressSpace();
-    if (!AddressSpace) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "pointer low-level type has no address space");
-    }
-    return "p" + std::to_string(*AddressSpace);
-  }
-  if (!Type.isFloat()) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "invalid scalar low-level type cannot be printed as LLVM MIR");
-  }
-
-  const auto Semantics = Type.floatSemantics();
-  if (!Semantics) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "floating low-level type has no floating-point semantics");
-  }
-  switch (*Semantics) {
-  case FloatSemantics::IEEEHalf:
-    return "f16";
-  case FloatSemantics::BFloat:
-    return "bf16";
-  case FloatSemantics::IEEESingle:
-    return "f32";
-  case FloatSemantics::IEEEDouble:
-    return "f64";
-  case FloatSemantics::IEEEQuad:
-    return "f128";
-  case FloatSemantics::PPCDoubleDouble:
-  case FloatSemantics::Float8E5M2:
-  case FloatSemantics::Float8E5M2FNUZ:
-  case FloatSemantics::Float8E4M3:
-  case FloatSemantics::Float8E4M3FN:
-  case FloatSemantics::Float8E4M3FNUZ:
-  case FloatSemantics::Float8E4M3B11FNUZ:
-  case FloatSemantics::Float8E3M4:
-  case FloatSemantics::FloatTF32:
-  case FloatSemantics::Float8E8M0FNU:
-  case FloatSemantics::Float6E3M2FN:
-  case FloatSemantics::Float6E2M3FN:
-  case FloatSemantics::Float4E2M1FN:
-  case FloatSemantics::X87DoubleExtended:
-  case FloatSemantics::Count:
-    return makeUnexpected(ErrorCode::Unsupported,
-                          "fixed LLVM MIR cannot spell this floating low-level type");
-  }
-  return makeUnexpected(ErrorCode::InternalError, "floating low-level type is unhandled");
-}
-
-[[nodiscard]] Expected<std::string> llvmMIRLowLevelType(LLT Type) {
-  if (!Type.isValid()) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "invalid low-level type cannot be printed as LLVM MIR");
-  }
-  if (!Type.isVector())
-    return llvmMIRScalarLowLevelType(Type);
-
-  const auto ElementType = Type.scalarElementType();
-  if (!ElementType) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "vector low-level type has no scalar element type");
-  }
-  auto Scalar = llvmMIRScalarLowLevelType(*ElementType);
-  if (!Scalar)
-    return std::unexpected(Scalar.error());
-
-  std::string Result = "<";
-  if (Type.isScalableVector())
-    Result.append("vscale x ");
-  Result.append(std::to_string(Type.minimumElementCount()));
-  Result.append(" x ");
-  Result.append(*Scalar);
-  Result.push_back('>');
-  return Result;
-}
-
-class BodyPrinter final {
-public:
-  BodyPrinter(const MachineFunction &Function, const TargetDescription &Target,
-              const MIParserContext &Context, MIPrinterOptions Options)
-      : Function(Function), Target(Target), Context(Context), Options(Options) {}
-
-  [[nodiscard]] Expected<std::string> run();
-
-private:
-  [[nodiscard]] Expected<void> initialize();
-  [[nodiscard]] Expected<void> printBlock(const MachineBasicBlock &Block);
-  [[nodiscard]] Expected<void> printInstruction(const MachineInstr &Instruction);
-  [[nodiscard]] Expected<void> printOperand(const MachineOperand &Operand, bool IsExplicitDef,
-                                            bool PrintVirtualType = true);
-  [[nodiscard]] Expected<void> printInlineAsmExtraInfo(const MachineOperand &Operand);
-  [[nodiscard]] Expected<std::size_t> printInlineAsmOperandFlag(const MachineOperand &Operand);
-  [[nodiscard]] Expected<void> printRegisterOperand(const MachineOperand &Operand,
-                                                    bool IsExplicitDef, bool PrintVirtualType);
-  [[nodiscard]] Expected<void> printTargetFlags(std::uint32_t Flags);
-  [[nodiscard]] Expected<void> printMetadataReference(MachineMetadataReference Reference);
-  [[nodiscard]] Expected<void> printDILocation(const MachineDILocation &Location,
-                                               std::size_t FrameIndex);
-  [[nodiscard]] Expected<void> printCFIInstruction(CFIInstructionIndex Index);
-  [[nodiscard]] Expected<void> printMemoryOperand(const MachineMemOperand &Operand);
-  [[nodiscard]] Expected<void> printMemoryBase(const MemoryBase &Base, std::int64_t Offset);
-
-  [[nodiscard]] Expected<std::uint32_t> blockID(const MachineBasicBlock &Block) const;
-  [[nodiscard]] Expected<std::uint32_t> virtualRegisterID(Register Reg) const;
-  [[nodiscard]] Expected<std::uint32_t> frameID(FrameIndex Index) const;
-  [[nodiscard]] Expected<std::uint32_t> constantPoolID(ConstantPoolIndex Index) const;
-  [[nodiscard]] Expected<std::uint32_t> jumpTableID(JumpTableIndex Index) const;
-  [[nodiscard]] Expected<std::uint32_t> metadataID(MachineMetadataReference Reference) const;
-  [[nodiscard]] Expected<void> appendPhysicalRegister(PhysicalRegister Register);
-  void appendBlockReference(const MachineBasicBlock &Block);
-  void appendOffset(std::int64_t Offset);
-
-  const MachineFunction &Function;
-  const TargetDescription &Target;
-  const MIParserContext &Context;
-  MIPrinterOptions Options;
-  std::string Output;
-  std::unordered_map<const MachineBasicBlock *, std::uint32_t> BlockIDs;
-};
-
-Expected<void> BodyPrinter::initialize() {
-  std::uint64_t NextID = 0;
-  for (const MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr;
-       Block = Block->next()) {
-    if (NextID > std::numeric_limits<std::uint32_t>::max()) {
-      return makeUnexpected(ErrorCode::InvalidArgument,
-                            "machine function has too many blocks to print");
-    }
-    BlockIDs.emplace(Block, static_cast<std::uint32_t>(NextID));
-    ++NextID;
-  }
-  return {};
-}
-
-Expected<std::uint32_t> BodyPrinter::blockID(const MachineBasicBlock &Block) const {
-  const auto Found = BlockIDs.find(&Block);
-  if (Found == BlockIDs.end())
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "machine operand references an unlinked basic block");
-  return Found->second;
-}
-
-Expected<std::uint32_t> BodyPrinter::virtualRegisterID(Register Reg) const {
-  if (!Context.VirtualRegisters.empty()) {
-    const auto Found =
-        std::ranges::find_if(Context.VirtualRegisters,
-                             [Reg](const MIVirtualRegisterSlot &Slot) { return Slot.Reg == Reg; });
-    if (Found == Context.VirtualRegisters.end()) {
-      return makeUnexpected(ErrorCode::VerificationError, "virtual register has no MIR text slot");
-    }
-    return Found->TextID;
-  }
-  const auto VirtualIndex = Reg.virtualIndex();
-  if (!VirtualIndex)
-    return makeUnexpected(ErrorCode::VerificationError, "virtual register has no numeric index");
-  return *VirtualIndex;
-}
-
-Expected<std::uint32_t> BodyPrinter::frameID(FrameIndex Index) const {
-  const auto InStack = std::ranges::find_if(
-      Context.StackObjects, [Index](const MIFrameObjectSlot &Slot) { return Slot.Index == Index; });
-  if (InStack != Context.StackObjects.end())
-    return InStack->TextID;
-  const auto InFixed =
-      std::ranges::find_if(Context.FixedStackObjects,
-                           [Index](const MIFrameObjectSlot &Slot) { return Slot.Index == Index; });
-  if (InFixed != Context.FixedStackObjects.end())
-    return InFixed->TextID;
-  return makeUnexpected(ErrorCode::VerificationError, "frame index has no MIR text slot");
-}
-
-Expected<std::uint32_t> BodyPrinter::constantPoolID(ConstantPoolIndex Index) const {
-  const auto Found =
-      std::ranges::find_if(Context.ConstantPoolItems,
-                           [Index](const MIConstantPoolSlot &Slot) { return Slot.Index == Index; });
-  if (Found == Context.ConstantPoolItems.end()) {
-    return makeUnexpected(ErrorCode::VerificationError, "constant-pool index has no MIR text slot");
-  }
-  return Found->TextID;
-}
-
-Expected<std::uint32_t> BodyPrinter::jumpTableID(JumpTableIndex Index) const {
-  const auto Found = std::ranges::find_if(
-      Context.JumpTables, [Index](const MIJumpTableSlot &Slot) { return Slot.Index == Index; });
-  if (Found == Context.JumpTables.end())
-    return makeUnexpected(ErrorCode::VerificationError, "jump-table index has no MIR text slot");
-  return Found->TextID;
-}
-
-Expected<std::uint32_t> BodyPrinter::metadataID(MachineMetadataReference Reference) const {
-  const auto Found =
-      std::ranges::find_if(Context.Metadata, [Reference](const MIMetadataSlot &Slot) {
-        return Slot.Reference == Reference;
-      });
-  if (Found != Context.Metadata.end())
-    return Found->TextID;
-  if (Reference.scope() == MachineMetadataScope::MachineFunction)
-    return Reference.slot();
-  return makeUnexpected(ErrorCode::VerificationError,
-                        "embedded metadata reference has no MIR text slot");
-}
-
-Expected<void> BodyPrinter::appendPhysicalRegister(PhysicalRegister Register) {
-  const auto Name = Target.registers().physicalRegisterMIRName(Register);
-  if (!Name)
-    return makeUnexpected(ErrorCode::VerificationError, "physical register has no MIR name");
-  Output.push_back('$');
-  Output.append(*Name);
-  return {};
-}
-
-void BodyPrinter::appendBlockReference(const MachineBasicBlock &Block) {
-  Output.append("%bb.");
-  Output.append(std::to_string(BlockIDs.at(&Block)));
-}
-
-void BodyPrinter::appendOffset(std::int64_t Offset) {
-  if (Offset == 0)
-    return;
-  if (Offset > 0) {
-    Output.append(" + ");
-    Output.append(std::to_string(Offset));
-    return;
-  }
-  Output.append(" - ");
-  const std::uint64_t Magnitude = Offset == std::numeric_limits<std::int64_t>::min()
-                                      ? std::uint64_t{1} << 63U
-                                      : static_cast<std::uint64_t>(-Offset);
-  Output.append(std::to_string(Magnitude));
-}
-
-Expected<void> BodyPrinter::printTargetFlags(std::uint32_t Flags) {
-  if (Flags == 0)
-    return {};
-  auto Names = Target.mirText().operandFlagNames(Flags);
-  if (!Names)
-    return std::unexpected(Names.error());
-  Output.append("target-flags(");
-  for (std::size_t Index = 0; Index < Names->size(); ++Index) {
-    if (Index != 0)
-      Output.append(", ");
-    Output.append((*Names)[Index]);
-  }
-  Output.append(") ");
-  return {};
-}
-
-Expected<void> BodyPrinter::printMetadataReference(MachineMetadataReference Reference) {
-  auto ID = metadataID(Reference);
-  if (!ID)
-    return std::unexpected(ID.error());
-  Output.push_back('!');
-  Output.append(std::to_string(*ID));
-  return {};
-}
-
-Expected<void> BodyPrinter::printDILocation(const MachineDILocation &Location,
-                                            std::size_t FrameIndex) {
-  const auto Frames = Location.inlineChain();
-  if (FrameIndex >= Frames.size()) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "inline DILocation has an invalid frame index");
-  }
-  const MachineDILocationFrame &Frame = Frames[FrameIndex];
-  Output.append("!DILocation(line: ");
-  Output.append(std::to_string(Frame.Line));
-  if (Options.Mode == MIPrintMode::Complete || Frame.Column != 0) {
-    Output.append(", column: ");
-    Output.append(std::to_string(Frame.Column));
-  }
-  Output.append(", scope: ");
-  if (auto Printed = printMetadataReference(Frame.Scope); !Printed)
-    return Printed;
-  if (FrameIndex + 1U < Frames.size()) {
-    Output.append(", inlinedAt: ");
-    if (auto Printed = printDILocation(Location, FrameIndex + 1U); !Printed)
-      return Printed;
-  } else if (Location.terminalInlinedAt()) {
-    Output.append(", inlinedAt: ");
-    if (auto Printed = printMetadataReference(*Location.terminalInlinedAt()); !Printed) {
-      return Printed;
-    }
-  }
-  if (Options.Mode == MIPrintMode::Complete || Frame.IsImplicitCode) {
-    Output.append(", isImplicitCode: ");
-    Output.append(Frame.IsImplicitCode ? "true" : "false");
-  }
-  if (Options.Mode == MIPrintMode::Complete || Frame.AtomGroup != 0) {
-    Output.append(", atomGroup: ");
-    Output.append(std::to_string(Frame.AtomGroup));
-  }
-  if (Options.Mode == MIPrintMode::Complete || Frame.AtomRank != 0) {
-    Output.append(", atomRank: ");
-    Output.append(std::to_string(Frame.AtomRank));
-  }
-  Output.push_back(')');
-  return {};
-}
-
-Expected<void> BodyPrinter::printRegisterOperand(const MachineOperand &Operand, bool IsExplicitDef,
-                                                 bool PrintVirtualType) {
-  const RegisterOperandFlags Flags = Operand.registerFlags();
-  if (Flags.has(RegisterOperandFlag::Implicit) && Flags.has(RegisterOperandFlag::Define)) {
-    Output.append("implicit-def ");
-  } else {
-    if (!IsExplicitDef && Flags.has(RegisterOperandFlag::Define))
-      Output.append("def ");
-    if (Flags.has(RegisterOperandFlag::Implicit))
-      Output.append("implicit ");
-  }
-  if (Flags.has(RegisterOperandFlag::Dead))
-    Output.append("dead ");
-  if (Flags.has(RegisterOperandFlag::Kill))
-    Output.append("killed ");
-  if (Flags.has(RegisterOperandFlag::Undef))
-    Output.append("undef ");
-  if (Flags.has(RegisterOperandFlag::InternalRead))
-    Output.append("internal ");
-  if (Flags.has(RegisterOperandFlag::EarlyClobber))
-    Output.append("early-clobber ");
-  if (Flags.has(RegisterOperandFlag::Debug))
-    Output.append("debug-use ");
-  if (Flags.has(RegisterOperandFlag::Renamable))
-    Output.append("renamable ");
-
-  const auto RegisterValue = Operand.registerValue();
-  if (!RegisterValue) {
-    return makeUnexpected(ErrorCode::VerificationError, "register operand has no register value");
-  }
-  const Register Reg = *RegisterValue;
-  if (Reg.isNoRegister()) {
-    Output.append("$noreg");
-  } else if (Reg.isPhysical()) {
-    const auto Physical = Reg.physicalRegister();
-    if (!Physical) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "physical register has no physical-register value");
-    }
-    auto Printed = appendPhysicalRegister(*Physical);
-    if (!Printed)
-      return Printed;
-  } else {
-    auto Info = Function.registerInfo().virtualRegisterInfo(Reg);
-    if (!Info)
-      return std::unexpected(Info.error());
-    const VirtualRegisterInfo &RegisterInfo = Info->get();
-    Output.push_back('%');
-    if (RegisterInfo.Name) {
-      Output.append(*RegisterInfo.Name);
-    } else {
-      auto VirtualIndex = virtualRegisterID(Reg);
-      if (!VirtualIndex)
-        return std::unexpected(VirtualIndex.error());
-      Output.append(std::to_string(*VirtualIndex));
-    }
-    if (Operand.subReg().value() != 0) {
-      const SubRegIndexDesc *SubReg = Target.registers().subRegIndex(Operand.subReg());
-      if (SubReg == nullptr)
-        return makeUnexpected(ErrorCode::VerificationError,
-                              "virtual register has an unknown subregister");
-      Output.push_back('.');
-      Output.append(SubReg->Name);
-    }
-
-    const bool PrintRegisterConstraint =
-        IsExplicitDef || Function.registerInfo().getUniqueVRegDef(Reg) == nullptr;
-    if (PrintRegisterConstraint && RegisterInfo.RegClass) {
-      const auto Name = Target.registers().registerClassMIRName(*RegisterInfo.RegClass);
-      if (!Name)
-        return makeUnexpected(ErrorCode::VerificationError,
-                              "virtual register class has no MIR name");
-      Output.push_back(':');
-      Output.append(*Name);
-    } else if (PrintRegisterConstraint && RegisterInfo.Bank) {
-      const auto Name = Target.registers().registerBankMIRName(*RegisterInfo.Bank);
-      if (!Name)
-        return makeUnexpected(ErrorCode::VerificationError,
-                              "virtual register bank has no MIR name");
-      Output.push_back(':');
-      Output.append(*Name);
-    } else if (PrintRegisterConstraint && RegisterInfo.Type) {
-      Output.append(":_");
-    }
-    if (PrintVirtualType && RegisterInfo.Type) {
-      auto Type = llvmMIRLowLevelType(*RegisterInfo.Type);
-      if (!Type)
-        return std::unexpected(Type.error());
-      Output.push_back('(');
-      Output.append(*Type);
-      Output.push_back(')');
-    }
-  }
-
-  if (Operand.tiedOperandIndex() && Operand.isUse()) {
-    Output.append("(tied-def ");
-    Output.append(std::to_string(*Operand.tiedOperandIndex()));
-    Output.push_back(')');
-  }
-  return {};
-}
-
-Expected<void> BodyPrinter::printCFIInstruction(CFIInstructionIndex Index) {
-  const MachineCFIInstruction *Instruction = Function.cfiInfo().instruction(Index);
-  if (Instruction == nullptr)
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "CFI operand references an unknown instruction");
-  const auto PrintRegister = [this](DwarfRegisterNumber Dwarf) -> Expected<void> {
-    const auto Register = Target.mirText().physicalRegister(Dwarf.value());
-    if (!Register) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "CFI instruction has no canonical physical register");
-    }
-    return appendPhysicalRegister(*Register);
-  };
-  const auto PrintRegisterOffset =
-      [this, &PrintRegister](std::string_view Name,
-                             const MachineCFIRegisterOffsetRule &Rule) -> Expected<void> {
-    Output.append(Name);
-    Output.push_back(' ');
-    if (auto Printed = PrintRegister(Rule.Register); !Printed)
-      return Printed;
-    Output.append(", ");
-    Output.append(std::to_string(Rule.Offset));
-    return {};
-  };
-
-  switch (Instruction->operation()) {
-  case MachineCFIOperation::SameValue: {
-    Output.append("same_value ");
-    return PrintRegister(Instruction->getIf<MachineCFIRegisterRule>()->Register);
-  }
-  case MachineCFIOperation::RememberState:
-    Output.append("remember_state");
-    return {};
-  case MachineCFIOperation::RestoreState:
-    Output.append("restore_state");
-    return {};
-  case MachineCFIOperation::Offset:
-    return PrintRegisterOffset("offset", *Instruction->getIf<MachineCFIRegisterOffsetRule>());
-  case MachineCFIOperation::LLVMDefAddressSpaceCFA: {
-    const auto &Rule = *Instruction->getIf<MachineCFIAddressSpaceCFARule>();
-    Output.append("llvm_def_aspace_cfa ");
-    if (auto Printed = PrintRegister(Rule.Register); !Printed)
-      return Printed;
-    Output.append(", ");
-    Output.append(std::to_string(Rule.Offset));
-    Output.append(", ");
-    Output.append(std::to_string(Rule.AddressSpace));
-    return {};
-  }
-  case MachineCFIOperation::DefCFARegister:
-    Output.append("def_cfa_register ");
-    return PrintRegister(Instruction->getIf<MachineCFIRegisterRule>()->Register);
-  case MachineCFIOperation::DefCFAOffset:
-    Output.append("def_cfa_offset ");
-    Output.append(std::to_string(Instruction->getIf<MachineCFIOffsetRule>()->Offset));
-    return {};
-  case MachineCFIOperation::DefCFA:
-    return PrintRegisterOffset("def_cfa", *Instruction->getIf<MachineCFIRegisterOffsetRule>());
-  case MachineCFIOperation::RelativeOffset:
-    return PrintRegisterOffset("rel_offset", *Instruction->getIf<MachineCFIRegisterOffsetRule>());
-  case MachineCFIOperation::AdjustCFAOffset:
-    Output.append("adjust_cfa_offset ");
-    Output.append(std::to_string(Instruction->getIf<MachineCFIOffsetRule>()->Offset));
-    return {};
-  case MachineCFIOperation::Escape: {
-    Output.append("escape ");
-    constexpr std::string_view Hex = "0123456789ABCDEF";
-    const auto &Bytes = Instruction->getIf<MachineCFIEscapeRule>()->Bytes;
-    for (std::size_t ByteIndex = 0; ByteIndex < Bytes.size(); ++ByteIndex) {
-      if (ByteIndex != 0)
-        Output.append(", ");
-      Output.append("0x");
-      Output.push_back(Hex[Bytes[ByteIndex] >> 4U]);
-      Output.push_back(Hex[Bytes[ByteIndex] & 0xFU]);
-    }
-    return {};
-  }
-  case MachineCFIOperation::Restore:
-    Output.append("restore ");
-    return PrintRegister(Instruction->getIf<MachineCFIRegisterRule>()->Register);
-  case MachineCFIOperation::Undefined:
-    Output.append("undefined ");
-    return PrintRegister(Instruction->getIf<MachineCFIRegisterRule>()->Register);
-  case MachineCFIOperation::Register: {
-    const auto &Rule = *Instruction->getIf<MachineCFIRegisterRegisterRule>();
-    Output.append("register ");
-    if (auto Printed = PrintRegister(Rule.Register); !Printed)
-      return Printed;
-    Output.append(", ");
-    return PrintRegister(Rule.SourceRegister);
-  }
-  case MachineCFIOperation::WindowSave:
-    Output.append("window_save");
-    return {};
-  case MachineCFIOperation::NegateReturnAddressState:
-    Output.append("negate_ra_sign_state");
-    return {};
-  case MachineCFIOperation::NegateReturnAddressStateWithPC:
-    Output.append("negate_ra_sign_state_with_pc");
-    return {};
-  case MachineCFIOperation::GNUArgsSize:
-  case MachineCFIOperation::Label:
-  case MachineCFIOperation::ValueOffset:
-    return makeUnexpected(
-        ErrorCode::Unsupported,
-        "CFI operation has no textual representation in the fixed LLVM MIR baseline");
-  case MachineCFIOperation::LLVMRegisterPair: {
-    const auto &Rule = *Instruction->getIf<MachineCFIRegisterPairRule>();
-    Output.append("llvm_register_pair ");
-    if (auto Printed = PrintRegister(Rule.Register); !Printed)
-      return Printed;
-    Output.append(", ");
-    if (auto Printed = PrintRegister(Rule.FirstRegister); !Printed)
-      return Printed;
-    Output.append(", ");
-    Output.append(std::to_string(Rule.FirstSizeInBits));
-    Output.append(", ");
-    if (auto Printed = PrintRegister(Rule.SecondRegister); !Printed)
-      return Printed;
-    Output.append(", ");
-    Output.append(std::to_string(Rule.SecondSizeInBits));
-    return {};
-  }
-  case MachineCFIOperation::LLVMVectorRegisters: {
-    const auto &Rule = *Instruction->getIf<MachineCFIVectorRegistersRule>();
-    Output.append("llvm_vector_registers ");
-    if (auto Printed = PrintRegister(Rule.Register); !Printed)
-      return Printed;
-    for (const MachineCFIVectorRegisterLane &Lane : Rule.VectorRegisters) {
-      Output.append(", ");
-      if (auto Printed = PrintRegister(Lane.Register); !Printed)
-        return Printed;
-      Output.append(", ");
-      Output.append(std::to_string(Lane.Lane));
-      Output.append(", ");
-      Output.append(std::to_string(Lane.SizeInBits));
-    }
-    return {};
-  }
-  case MachineCFIOperation::LLVMVectorOffset: {
-    const auto &Rule = *Instruction->getIf<MachineCFIVectorOffsetRule>();
-    Output.append("llvm_vector_offset ");
-    if (auto Printed = PrintRegister(Rule.Register); !Printed)
-      return Printed;
-    Output.append(", ");
-    Output.append(std::to_string(Rule.RegisterSizeInBits));
-    Output.append(", ");
-    if (auto Printed = PrintRegister(Rule.MaskRegister); !Printed)
-      return Printed;
-    Output.append(", ");
-    Output.append(std::to_string(Rule.MaskRegisterSizeInBits));
-    Output.append(", ");
-    Output.append(std::to_string(Rule.Offset));
-    return {};
-  }
-  case MachineCFIOperation::LLVMVectorRegisterMask: {
-    const auto &Rule = *Instruction->getIf<MachineCFIVectorRegisterMaskRule>();
-    Output.append("llvm_vector_register_mask ");
-    if (auto Printed = PrintRegister(Rule.Register); !Printed)
-      return Printed;
-    Output.append(", ");
-    if (auto Printed = PrintRegister(Rule.SpillRegister); !Printed)
-      return Printed;
-    Output.append(", ");
-    Output.append(std::to_string(Rule.SpillRegisterLaneSizeInBits));
-    Output.append(", ");
-    if (auto Printed = PrintRegister(Rule.MaskRegister); !Printed)
-      return Printed;
-    Output.append(", ");
-    Output.append(std::to_string(Rule.MaskRegisterSizeInBits));
-    return {};
-  }
-  case MachineCFIOperation::Count:
-    return makeUnexpected(ErrorCode::VerificationError, "CFI instruction has an invalid operation");
-  }
-  return makeUnexpected(ErrorCode::InternalError, "CFI printer did not handle an operation");
-}
-
-Expected<void> BodyPrinter::printOperand(const MachineOperand &Operand, bool IsExplicitDef,
-                                         bool PrintVirtualType) {
-  if (Operand.isRegister())
-    return printRegisterOperand(Operand, IsExplicitDef, PrintVirtualType);
-  if (auto Flags = printTargetFlags(Operand.targetFlags()); !Flags)
-    return Flags;
-
-  switch (Operand.kind()) {
-  case MachineOperand::Kind::Register:
-    return makeUnexpected(ErrorCode::InternalError,
-                          "register operand reached the non-register printer");
-  case MachineOperand::Kind::Immediate:
-    Output.append(std::to_string(*Operand.getIf<std::int64_t>()));
-    return {};
-  case MachineOperand::Kind::IntegerImmediate: {
-    const IntegerImmediate &Value = Operand.getIf<IntegerImmediateOperand>()->Value;
-    Output.push_back('i');
-    Output.append(std::to_string(Value.bitWidth()));
-    Output.push_back(' ');
-    if (Value.bitWidth() == 1U)
-      Output.append(Value.isZero() ? "false" : "true");
-    else
-      Output.append(Value.toSignedDecimal());
-    return {};
-  }
-  case MachineOperand::Kind::FloatingImmediate: {
-    const FloatingPointBits &Bits = Operand.getIf<FloatingImmediateOperand>()->Bits;
-    auto Constant = GenericConstantData::floating(Bits);
-    if (!Constant)
-      return std::unexpected(Constant.error());
-    auto Text = printLLVMConstant(*Constant);
-    if (!Text)
-      return std::unexpected(Text.error());
-    Output.append(*Text);
-    return {};
-  }
-  case MachineOperand::Kind::BasicBlock: {
-    const MachineBasicBlock *Block = Operand.getIf<BasicBlockOperand>()->Block;
-    if (Block == nullptr || !BlockIDs.contains(Block)) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "basic-block operand references an unlinked block");
-    }
-    appendBlockReference(*Block);
-    return {};
-  }
-  case MachineOperand::Kind::FrameIndex: {
-    const auto &Frame = *Operand.getIf<FrameIndexOperand>();
-    auto ID = frameID(Frame.Index);
-    if (!ID)
-      return std::unexpected(ID.error());
-    const auto Stack = std::ranges::find_if(
-        Context.StackObjects,
-        [Index = Frame.Index](const MIFrameObjectSlot &Slot) { return Slot.Index == Index; });
-    if (Stack != Context.StackObjects.end()) {
-      Output.append("%stack.");
-      Output.append(std::to_string(*ID));
-      if (Stack->Name) {
-        Output.push_back('.');
-        Output.append(quoteName(*Stack->Name));
-      }
-    } else {
-      Output.append("%fixed-stack.");
-      Output.append(std::to_string(*ID));
-    }
-    appendOffset(Frame.Offset);
-    return {};
-  }
-  case MachineOperand::Kind::ConstantPoolIndex: {
-    const auto &Constant = *Operand.getIf<ConstantPoolOperand>();
-    auto ID = constantPoolID(Constant.Index);
-    if (!ID)
-      return std::unexpected(ID.error());
-    Output.append("%const.");
-    Output.append(std::to_string(*ID));
-    appendOffset(Constant.Offset);
-    return {};
-  }
-  case MachineOperand::Kind::JumpTableIndex: {
-    auto ID = jumpTableID(Operand.getIf<JumpTableOperand>()->Index);
-    if (!ID)
-      return std::unexpected(ID.error());
-    Output.append("%jump-table.");
-    Output.append(std::to_string(*ID));
-    return {};
-  }
-  case MachineOperand::Kind::GlobalSymbol: {
-    const auto &Global = *Operand.getIf<GlobalSymbolOperand>();
-    Output.push_back('@');
-    Output.append(quoteName(Global.Name));
-    appendOffset(Global.Offset);
-    return {};
-  }
-  case MachineOperand::Kind::ExternalSymbol: {
-    const auto &External = *Operand.getIf<ExternalSymbolOperand>();
-    Output.push_back('&');
-    Output.append(quoteName(External.Name));
-    appendOffset(External.Offset);
-    return {};
-  }
-  case MachineOperand::Kind::BlockAddress: {
-    const auto &Address = *Operand.getIf<BlockAddressOperand>();
-    Output.append("blockaddress(@");
-    Output.append(quoteName(Address.FunctionName));
-    Output.append(", %ir-block.");
-    Output.append(quoteName(Address.BlockName));
-    Output.push_back(')');
-    appendOffset(Address.Offset);
-    return {};
-  }
-  case MachineOperand::Kind::RegisterMask: {
-    const RegisterMask &Mask = *Operand.getIf<RegisterMaskOperand>()->Mask;
-    if (const auto Name = Target.mirText().registerMaskName(Mask)) {
-      Output.append(*Name);
-      return {};
-    }
-    Output.append("CustomRegMask(");
-    bool First = true;
-    for (const PhysicalRegisterDesc &Register : Target.registers().physicalRegisters()) {
-      if (!Mask.preserves(Register.Reg))
-        continue;
-      if (!First)
-        Output.append(", ");
-      First = false;
-      if (auto Printed = appendPhysicalRegister(Register.Reg); !Printed)
-        return Printed;
-    }
-    Output.push_back(')');
-    return {};
-  }
-  case MachineOperand::Kind::LiveOutRegisterMask: {
-    const RegisterMask &Mask = *Operand.getIf<LiveOutRegisterMaskOperand>()->Mask;
-    Output.append("liveout(");
-    bool First = true;
-    for (const PhysicalRegisterDesc &Register : Target.registers().physicalRegisters()) {
-      if (!Mask.preserves(Register.Reg))
-        continue;
-      if (!First)
-        Output.append(", ");
-      First = false;
-      if (auto Printed = appendPhysicalRegister(Register.Reg); !Printed)
-        return Printed;
-    }
-    Output.push_back(')');
-    return {};
-  }
-  case MachineOperand::Kind::Metadata: {
-    const MachineMetadataValue &Value = Operand.getIf<MetadataOperand>()->Value;
-    if (const auto *Reference = Value.reference())
-      return printMetadataReference(*Reference);
-    const MachineDIExpression *Expression = Value.expression();
-    if (Expression == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "metadata operand has no printable value");
-    }
-    Output.append(formatDIExpression(Expression->elements()));
-    return {};
-  }
-  case MachineOperand::Kind::TargetIndex: {
-    const auto &TargetIndexValue = *Operand.getIf<TargetIndexOperand>();
-    const auto Name = Target.mirText().targetIndexName(TargetIndexValue.Index);
-    if (!Name)
-      return makeUnexpected(ErrorCode::VerificationError, "target index has no MIR name");
-    Output.append("target-index(");
-    Output.append(*Name);
-    Output.push_back(')');
-    appendOffset(TargetIndexValue.Offset);
-    return {};
-  }
-  case MachineOperand::Kind::MCSymbol: {
-    const auto &Symbol = *Operand.getIf<MCSymbolOperand>();
-    Output.append("<mcsymbol ");
-    Output.append(quoteName(Symbol.Name));
-    Output.push_back('>');
-    appendOffset(Symbol.Offset);
-    return {};
-  }
-  case MachineOperand::Kind::CFIIndex:
-    return printCFIInstruction(Operand.getIf<CFIIndexOperand>()->Index);
-  case MachineOperand::Kind::Intrinsic: {
-    const auto Name = Target.mirText().intrinsicName(Operand.getIf<IntrinsicOperand>()->ID);
-    if (!Name)
-      return makeUnexpected(ErrorCode::VerificationError, "intrinsic has no MIR name");
-    Output.append("intrinsic(@");
-    Output.append(*Name);
-    Output.push_back(')');
-    return {};
-  }
-  case MachineOperand::Kind::Predicate: {
-    const PredicateOperand &Predicate = *Operand.getIf<PredicateOperand>();
-    if (const auto *Integer = Predicate.integerPredicate()) {
-      Output.append("intpred(");
-      Output.append(integerPredicateName(*Integer));
-    } else {
-      Output.append("floatpred(");
-      Output.append(floatingPredicateName(*Predicate.floatingPredicate()));
-    }
-    Output.push_back(')');
-    return {};
-  }
-  case MachineOperand::Kind::ShuffleMask: {
-    Output.append("shufflemask(");
-    const auto &Elements = Operand.getIf<ShuffleMaskOperand>()->Elements;
-    for (std::size_t Index = 0; Index < Elements.size(); ++Index) {
-      if (Index != 0)
-        Output.append(", ");
-      if (Elements[Index] == ShuffleMaskOperand::Undef)
-        Output.append("undef");
-      else
-        Output.append(std::to_string(Elements[Index]));
-    }
-    Output.push_back(')');
-    return {};
-  }
-  case MachineOperand::Kind::DebugInstrRef: {
-    const auto &Reference = *Operand.getIf<DebugInstrRefOperand>();
-    Output.append("dbg-instr-ref(");
-    Output.append(std::to_string(Reference.InstructionNumber));
-    Output.append(", ");
-    Output.append(std::to_string(Reference.OperandNumber));
-    Output.push_back(')');
-    return {};
-  }
-  case MachineOperand::Kind::LaneMask:
-    Output.append("lanemask(0x");
-    Output.append(
-        hexadecimalWords(std::array{Operand.getIf<LaneMaskOperand>()->Mask.rawValue()}, 64));
-    Output.push_back(')');
-    return {};
-  case MachineOperand::Kind::Count:
-    return makeUnexpected(ErrorCode::VerificationError, "machine operand has an invalid kind");
-  }
-  return makeUnexpected(ErrorCode::InternalError, "machine operand printer did not handle a kind");
-}
-
-Expected<void> BodyPrinter::printInlineAsmExtraInfo(const MachineOperand &Operand) {
-  const auto *Value = Operand.getIf<std::int64_t>();
-  if (Value == nullptr || Operand.targetFlags() != 0) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "inline assembly extra info must be an unflagged immediate");
-  }
-  const InlineAsmExtraInfo ExtraInfo(static_cast<std::uint32_t>(*Value));
-  const std::vector<std::string_view> Names = ExtraInfo.names();
-  for (std::size_t Index = 0; Index < Names.size(); ++Index) {
-    if (Index != 0)
-      Output.push_back(' ');
-    Output.append(Names[Index]);
-  }
-  return {};
-}
-
-Expected<std::size_t> BodyPrinter::printInlineAsmOperandFlag(const MachineOperand &Operand) {
-  const auto *Value = Operand.getIf<std::int64_t>();
-  if (Value == nullptr || *Value < 0 ||
-      static_cast<std::uint64_t>(*Value) > std::numeric_limits<std::uint32_t>::max() ||
-      Operand.targetFlags() != 0) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "inline assembly operand flag must be an unflagged 32-bit immediate");
-  }
-
-  const InlineAsmOperandFlag Flag(static_cast<std::uint32_t>(*Value));
-  const std::string_view KindName = InlineAsmOperandFlag::kindName(Flag.kind());
-  if (KindName.empty() || Flag.operandCount() == 0) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "inline assembly operand flag has an invalid kind or operand count");
-  }
-  Output.append(KindName);
-
-  if (const auto MatchingOperand = Flag.matchingOperand()) {
-    Output.append(" tiedto:$");
-    Output.append(std::to_string(*MatchingOperand));
-    return Flag.operandCount();
-  }
-  if (Flag.kind() == InlineAsmOperandKind::Memory ||
-      Flag.kind() == InlineAsmOperandKind::Function) {
-    const auto Constraint = InlineAsmOperandFlag::memoryConstraintName(Flag.memoryConstraint());
-    if (Constraint) {
-      Output.push_back(':');
-      Output.append(*Constraint);
-    }
-    return Flag.operandCount();
-  }
-  if (Flag.isRegisterKind()) {
-    if (const auto RegisterClass = Flag.registerClass()) {
-      const auto Name =
-          Target.registers().registerClassMIRName(RegisterClassID::fromValue(*RegisterClass));
-      if (!Name) {
-        return makeUnexpected(ErrorCode::VerificationError,
-                              "inline assembly operand flag references an unknown register class");
-      }
-      Output.push_back(':');
-      Output.append(*Name);
-    }
-  }
-  return Flag.operandCount();
-}
-
-Expected<void> BodyPrinter::printMemoryBase(const MemoryBase &Base, std::int64_t Offset) {
-  switch (Base.kind()) {
-  case MemoryBase::Kind::Unknown:
-    Output.append("unknown-address");
-    break;
-  case MemoryBase::Kind::FrameIndex: {
-    const auto Frame = Base.frameIndex();
-    if (!Frame) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "frame-index memory base has no frame index");
-    }
-    const FrameIndex Index = *Frame;
-    auto ID = frameID(Index);
-    if (!ID)
-      return std::unexpected(ID.error());
-    const auto Stack =
-        std::ranges::find_if(Context.StackObjects, [Index](const MIFrameObjectSlot &Slot) {
-          return Slot.Index == Index;
-        });
-    if (Stack != Context.StackObjects.end()) {
-      Output.append("%stack.");
-      Output.append(std::to_string(*ID));
-      if (Stack->Name) {
-        Output.push_back('.');
-        Output.append(quoteName(*Stack->Name));
-      }
-    } else {
-      Output.append("%fixed-stack.");
-      Output.append(std::to_string(*ID));
-    }
-    break;
-  }
-  case MemoryBase::Kind::ConstantPool: {
-    const auto Constant = Base.constantPoolIndex();
-    if (!Constant) {
-      return makeUnexpected(ErrorCode::VerificationError, "constant-pool memory base has no index");
-    }
-    auto ID = constantPoolID(*Constant);
-    if (!ID)
-      return std::unexpected(ID.error());
-    Output.append("%const.");
-    Output.append(std::to_string(*ID));
-    break;
-  }
-  case MemoryBase::Kind::JumpTable: {
-    const auto JumpTable = Base.jumpTableIndex();
-    if (!JumpTable) {
-      return makeUnexpected(ErrorCode::VerificationError, "jump-table memory base has no index");
-    }
-    auto ID = jumpTableID(*JumpTable);
-    if (!ID)
-      return std::unexpected(ID.error());
-    Output.append("%jump-table.");
-    Output.append(std::to_string(*ID));
-    break;
-  }
-  case MemoryBase::Kind::GlobalSymbol: {
-    const auto &Name = Base.symbolName();
-    if (!Name) {
-      return makeUnexpected(ErrorCode::VerificationError, "global memory base has no symbol name");
-    }
-    Output.push_back('@');
-    Output.append(quoteName(*Name));
-    break;
-  }
-  case MemoryBase::Kind::ExternalSymbol: {
-    const auto &Name = Base.symbolName();
-    if (!Name) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "external memory base has no symbol name");
-    }
-    Output.push_back('&');
-    Output.append(quoteName(*Name));
-    break;
-  }
-  case MemoryBase::Kind::IRValue: {
-    const auto &Name = Base.symbolName();
-    if (!Name) {
-      return makeUnexpected(ErrorCode::VerificationError, "IR-value memory base has no value name");
-    }
-    Output.append("%ir.");
-    Output.append(quoteName(*Name));
-    break;
-  }
-  case MemoryBase::Kind::IRConstant: {
-    const GenericConstantData *Constant = Base.constantValue();
-    if (Constant == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "IR-constant memory base has no constant value");
-    }
-    auto Printed = printLLVMConstant(*Constant);
-    if (!Printed)
-      return std::unexpected(Printed.error());
-    Output.push_back('`');
-    Output.append(*Printed);
-    Output.push_back('`');
-    break;
-  }
-  case MemoryBase::Kind::Stack:
-    Output.append("stack");
-    break;
-  case MemoryBase::Kind::GOT:
-    Output.append("got");
-    break;
-  case MemoryBase::Kind::ConstantPoolPseudo:
-    Output.append("constant-pool");
-    break;
-  case MemoryBase::Kind::JumpTablePseudo:
-    Output.append("jump-table");
-    break;
-  case MemoryBase::Kind::CallEntryGlobal: {
-    const auto &Name = Base.symbolName();
-    if (!Name) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "global call-entry memory base has no symbol name");
-    }
-    Output.append("call-entry @");
-    Output.append(quoteName(*Name));
-    break;
-  }
-  case MemoryBase::Kind::CallEntryExternal: {
-    const auto &Name = Base.symbolName();
-    if (!Name) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "external call-entry memory base has no symbol name");
-    }
-    Output.append("call-entry &");
-    Output.append(quoteName(*Name));
-    break;
-  }
-  case MemoryBase::Kind::Custom: {
-    const auto &Name = Base.symbolName();
-    if (!Name) {
-      return makeUnexpected(ErrorCode::VerificationError, "custom memory base has no name");
-    }
-    Output.append("custom ");
-    Output.append(quoteName(*Name));
-    break;
-  }
-  }
-  appendOffset(Offset);
-  return {};
-}
-
-Expected<void> BodyPrinter::printMemoryOperand(const MachineMemOperand &Operand) {
-  const MachineMemOperandDesc &Description = Operand.description();
-  Output.push_back('(');
-  if (Description.Accesses.has(MemoryAccessFlag::Volatile))
-    Output.append("volatile ");
-  if (Description.Accesses.has(MemoryAccessFlag::NonTemporal))
-    Output.append("non-temporal ");
-  if (Description.Accesses.has(MemoryAccessFlag::Dereferenceable))
-    Output.append("dereferenceable ");
-  if (Description.Accesses.has(MemoryAccessFlag::Invariant))
-    Output.append("invariant ");
-  if (Description.TargetFlags != 0) {
-    auto Names = Target.mirText().machineMemOperandFlagNames(Description.TargetFlags);
-    if (!Names)
-      return std::unexpected(Names.error());
-    for (std::string_view Name : *Names) {
-      Output.append(quoteName(Name));
-      Output.push_back(' ');
-    }
-  }
-
-  if (Operand.isLoad())
-    Output.append("load");
-  else
-    Output.append("store");
-  if (Operand.isLoad() && Operand.isStore())
-    Output.append(" store");
-
-  if (Description.SyncScope.value() != 0) {
-    const auto Scope =
-        std::ranges::find_if(Context.SyncScopes, [&Description](const MISyncScopeSlot &Slot) {
-          return Slot.ID == Description.SyncScope;
-        });
-    if (Scope == Context.SyncScopes.end()) {
-      return makeUnexpected(ErrorCode::VerificationError, "synchronization scope has no MIR name");
-    }
-    Output.append(" syncscope(");
-    Output.append(quoteString(Scope->Name));
-    Output.push_back(')');
-  }
-  if (Description.SuccessOrdering != AtomicOrdering::NotAtomic) {
-    Output.push_back(' ');
-    Output.append(atomicOrderingName(Description.SuccessOrdering));
-  }
-  if (Description.FailureOrdering != AtomicOrdering::NotAtomic) {
-    Output.push_back(' ');
-    Output.append(atomicOrderingName(Description.FailureOrdering));
-  }
-
-  Output.push_back(' ');
-  if (Description.MemoryType) {
-    auto Type = llvmMIRLowLevelType(*Description.MemoryType);
-    if (!Type)
-      return std::unexpected(Type.error());
-    Output.push_back('(');
-    Output.append(*Type);
-    Output.push_back(')');
-  } else {
-    switch (Description.Size.kind()) {
-    case MemorySize::Kind::Unknown:
-      Output.append("unknown-size");
-      break;
-    case MemorySize::Kind::Fixed:
-      Output.append(std::to_string(Description.Size.minimumBytes()));
-      break;
-    case MemorySize::Kind::Scalable:
-      Output.append("(<vscale x ");
-      Output.append(std::to_string(Description.Size.minimumBytes()));
-      Output.append(" x s8>)");
-      break;
-    }
-  }
-
-  const std::string_view Preposition =
-      Operand.isLoad() && Operand.isStore() ? " on " : (Operand.isLoad() ? " from " : " into ");
-  if (Description.Base.kind() != MemoryBase::Kind::Unknown || Description.Offset != 0) {
-    Output.append(Preposition);
-    if (auto Printed = printMemoryBase(Description.Base, Description.Offset); !Printed) {
-      return Printed;
-    }
-  }
-
-  if (!Description.Size.isKnown() ||
-      (Description.Size.minimumBytes() != 0 &&
-       Description.Align.bytes() != Description.Size.minimumBytes())) {
-    Output.append(", align ");
-    Output.append(std::to_string(Description.Align.bytes()));
-  }
-  if (Description.BaseAlign && *Description.BaseAlign != Description.Align) {
-    Output.append(", basealign ");
-    Output.append(std::to_string(Description.BaseAlign->bytes()));
-  }
-  if (Description.AddressSpace != 0) {
-    Output.append(", addrspace ");
-    Output.append(std::to_string(Description.AddressSpace));
-  }
-
-  const auto PrintMetadata =
-      [this](std::string_view Name,
-             const std::optional<MachineMetadataReference> &Reference) -> Expected<void> {
-    if (!Reference)
-      return {};
-    Output.append(", ");
-    Output.append(Name);
-    Output.push_back(' ');
-    return printMetadataReference(*Reference);
-  };
-  if (auto Printed = PrintMetadata("!tbaa", Description.TBAA); !Printed)
-    return Printed;
-  if (auto Printed = PrintMetadata("!alias.scope", Description.AliasScope); !Printed) {
-    return Printed;
-  }
-  if (auto Printed = PrintMetadata("!noalias", Description.NoAlias); !Printed)
-    return Printed;
-  if (auto Printed = PrintMetadata("!noalias.addrspace", Description.NoAliasAddressSpace);
-      !Printed) {
-    return Printed;
-  }
-  if (auto Printed = PrintMetadata("!range", Description.RangeMetadata); !Printed) {
-    return Printed;
-  }
-  Output.push_back(')');
-  return {};
-}
-
-Expected<void> BodyPrinter::printInstruction(const MachineInstr &Instruction) {
-  const InstructionDescriptor *Descriptor = Target.instructions().descriptor(Instruction.opcode());
-  if (Descriptor == nullptr) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "machine instruction has no target descriptor");
-  }
-  std::size_t ExplicitDefs = 0;
-  while (ExplicitDefs < Instruction.operandCount()) {
-    const MachineOperand *Operand = Instruction.operandAt(ExplicitDefs);
-    if (Operand == nullptr || !Operand->isRegister() || Operand->isImplicit() ||
-        !Operand->isDef() || Operand->isUse())
-      break;
-    ++ExplicitDefs;
-  }
-
-  Output.append("  ");
-  for (std::size_t Index = 0; Index < ExplicitDefs; ++Index) {
-    if (Index != 0)
-      Output.append(", ");
-    if (auto Printed = printOperand(*Instruction.operandAt(Index), true); !Printed) {
-      return Printed;
-    }
-  }
-  if (ExplicitDefs != 0)
-    Output.append(" = ");
-
-  const MachineInstrFlags Flags = Instruction.flags();
-  constexpr std::array FlagSpellings{
-      std::pair{MachineInstrFlag::FrameSetup, std::string_view{"frame-setup"}},
-      std::pair{MachineInstrFlag::FrameDestroy, std::string_view{"frame-destroy"}},
-      std::pair{MachineInstrFlag::FastMathNoNaNs, std::string_view{"nnan"}},
-      std::pair{MachineInstrFlag::FastMathNoInfs, std::string_view{"ninf"}},
-      std::pair{MachineInstrFlag::FastMathNoSignedZeros, std::string_view{"nsz"}},
-      std::pair{MachineInstrFlag::FastMathAllowReciprocal, std::string_view{"arcp"}},
-      std::pair{MachineInstrFlag::FastMathAllowContract, std::string_view{"contract"}},
-      std::pair{MachineInstrFlag::FastMathApproxFunc, std::string_view{"afn"}},
-      std::pair{MachineInstrFlag::FastMathAllowReassoc, std::string_view{"reassoc"}},
-      std::pair{MachineInstrFlag::NoUnsignedWrap, std::string_view{"nuw"}},
-      std::pair{MachineInstrFlag::NoSignedWrap, std::string_view{"nsw"}},
-      std::pair{MachineInstrFlag::NoUSWrap, std::string_view{"nusw"}},
-      std::pair{MachineInstrFlag::Exact, std::string_view{"exact"}},
-      std::pair{MachineInstrFlag::NoFPExcept, std::string_view{"nofpexcept"}},
-      std::pair{MachineInstrFlag::Unpredictable, std::string_view{"unpredictable"}},
-      std::pair{MachineInstrFlag::NoConvergent, std::string_view{"noconvergent"}},
-      std::pair{MachineInstrFlag::NonNeg, std::string_view{"nneg"}},
-      std::pair{MachineInstrFlag::Disjoint, std::string_view{"disjoint"}},
-      std::pair{MachineInstrFlag::SameSign, std::string_view{"samesign"}},
-      std::pair{MachineInstrFlag::InBounds, std::string_view{"inbounds"}},
-  };
-  for (const auto &[Flag, Spelling] : FlagSpellings) {
-    if (Flags.has(Flag)) {
-      Output.append(Spelling);
-      Output.push_back(' ');
-    }
-  }
-  Output.append(Descriptor->Name);
-
-  bool HasPrintedTail = false;
-  const bool IsInlineAsm = Descriptor->Name == "INLINEASM" || Descriptor->Name == "INLINEASM_BR";
-  std::size_t InlineAsmPayloadRemaining = 0;
-  for (std::size_t Index = ExplicitDefs; Index < Instruction.operandCount(); ++Index) {
-    Output.append(HasPrintedTail ? ", " : " ");
-    HasPrintedTail = true;
-    const MachineOperand &Operand = *Instruction.operandAt(Index);
-    if (IsInlineAsm && Index == InlineAsmExtraInfoOperandIndex) {
-      auto Printed = printInlineAsmExtraInfo(Operand);
-      if (!Printed)
-        return Printed;
-      continue;
-    }
-    if (IsInlineAsm && Index >= InlineAsmFirstConstraintOperandIndex &&
-        InlineAsmPayloadRemaining == 0) {
-      auto OperandCount = printInlineAsmOperandFlag(Operand);
-      if (!OperandCount)
-        return std::unexpected(OperandCount.error());
-      InlineAsmPayloadRemaining = *OperandCount;
-      continue;
-    }
-    bool PrintVirtualType = true;
-    if (Descriptor->Flags.has(InstructionFlag::Generic) &&
-        !Descriptor->Flags.has(InstructionFlag::Phi) && Index < Descriptor->Operands.size()) {
-      const std::optional<OperandTypeConstraint> &UseConstraint =
-          Descriptor->Operands[Index].TypeConstraint;
-      if (UseConstraint) {
-        for (std::size_t DefIndex = 0; DefIndex < ExplicitDefs; ++DefIndex) {
-          if (DefIndex >= Descriptor->Operands.size())
-            break;
-          const std::optional<OperandTypeConstraint> &DefConstraint =
-              Descriptor->Operands[DefIndex].TypeConstraint;
-          if (DefConstraint && DefConstraint->EqualityGroup == UseConstraint->EqualityGroup) {
-            PrintVirtualType = false;
-            break;
-          }
-        }
-      } else if (const Register *UseRegister = Operand.getIf<Register>();
-                 UseRegister != nullptr && UseRegister->isVirtual()) {
-        const auto UseInfo = Function.registerInfo().virtualRegisterInfo(*UseRegister);
-        for (std::size_t DefIndex = 0; DefIndex < ExplicitDefs && UseInfo && UseInfo->get().Type;
-             ++DefIndex) {
-          if (DefIndex >= Descriptor->Operands.size() ||
-              Descriptor->Operands[DefIndex].TypeConstraint)
-            continue;
-          const MachineOperand *DefOperand = Instruction.operandAt(DefIndex);
-          const Register *DefRegister =
-              DefOperand == nullptr ? nullptr : DefOperand->getIf<Register>();
-          if (DefRegister == nullptr || !DefRegister->isVirtual())
-            continue;
-          const auto DefInfo = Function.registerInfo().virtualRegisterInfo(*DefRegister);
-          if (DefInfo && DefInfo->get().Type == UseInfo->get().Type) {
-            PrintVirtualType = false;
-            break;
-          }
-        }
-      }
-    }
-    auto Printed = printOperand(Operand, false, PrintVirtualType);
-    if (!Printed)
-      return Printed;
-    if (IsInlineAsm && InlineAsmPayloadRemaining != 0)
-      --InlineAsmPayloadRemaining;
-  }
-  if (InlineAsmPayloadRemaining != 0)
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "inline assembly operand flag has missing payload operands");
-
-  const auto BeginAttachment = [this, &HasPrintedTail](std::string_view Name) {
-    Output.append(HasPrintedTail ? ", " : " ");
-    HasPrintedTail = true;
-    Output.append(Name);
-    Output.push_back(' ');
-  };
-  if (Instruction.preInstrSymbol()) {
-    BeginAttachment("pre-instr-symbol");
-    Output.append("<mcsymbol ");
-    Output.append(quoteName(*Instruction.preInstrSymbol()));
-    Output.push_back('>');
-  }
-  if (Instruction.postInstrSymbol()) {
-    BeginAttachment("post-instr-symbol");
-    Output.append("<mcsymbol ");
-    Output.append(quoteName(*Instruction.postInstrSymbol()));
-    Output.push_back('>');
-  }
-  if (Instruction.heapAllocMarker()) {
-    BeginAttachment("heap-alloc-marker");
-    if (auto Printed = printMetadataReference(*Instruction.heapAllocMarker()); !Printed) {
-      return Printed;
-    }
-  }
-  if (Instruction.pcSections()) {
-    BeginAttachment("pcsections");
-    if (auto Printed = printMetadataReference(*Instruction.pcSections()); !Printed) {
-      return Printed;
-    }
-  }
-  if (Instruction.mmra()) {
-    BeginAttachment("mmra");
-    if (auto Printed = printMetadataReference(*Instruction.mmra()); !Printed)
-      return Printed;
-  }
-  if (Instruction.cfiType()) {
-    BeginAttachment("cfi-type");
-    Output.append(std::to_string(*Instruction.cfiType()));
-  }
-  if (Instruction.deactivationSymbol()) {
-    BeginAttachment("deactivation-symbol");
-    Output.push_back('@');
-    Output.append(quoteName(*Instruction.deactivationSymbol()));
-  }
-  if (Instruction.debugInstrNumber() != 0) {
-    BeginAttachment("debug-instr-number");
-    Output.append(std::to_string(Instruction.debugInstrNumber()));
-  }
-  if (Instruction.debugLocation()) {
-    BeginAttachment("debug-location");
-    if (const MachineMetadataReference *Reference = Instruction.debugLocation()->reference()) {
-      if (auto Printed = printMetadataReference(*Reference); !Printed)
-        return Printed;
-    } else if (const MachineDILocation *Location = Instruction.debugLocation()->inlineLocation()) {
-      if (auto Printed = printDILocation(*Location, 0); !Printed)
-        return Printed;
-    } else {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "machine debug location has no printable value");
-    }
-  }
-
-  if (!Instruction.memOperands().empty()) {
-    Output.append(" :: ");
-    for (std::size_t Index = 0; Index < Instruction.memOperands().size(); ++Index) {
-      if (Index != 0)
-        Output.append(", ");
-      if (auto Printed = printMemoryOperand(*Instruction.memOperands()[Index]); !Printed) {
-        return Printed;
-      }
-    }
-  }
-  return {};
-}
-
-Expected<void> BodyPrinter::printBlock(const MachineBasicBlock &Block) {
-  auto ID = blockID(Block);
-  if (!ID)
-    return std::unexpected(ID.error());
-  Output.append("bb.");
-  Output.append(std::to_string(*ID));
-  const auto &Name = Block.attributes().name();
-  if (Name) {
-    Output.push_back('.');
-    Output.append(quoteName(*Name));
-  }
-
-  std::vector<std::string> Attributes;
-  const auto AddFlag = [&Block, &Attributes](MachineBasicBlockAttribute Attribute,
-                                             std::string_view Spelling) {
-    if (Block.attributes().has(Attribute))
-      Attributes.emplace_back(Spelling);
-  };
-  AddFlag(MachineBasicBlockAttribute::MachineBlockAddressTaken, "machine-block-address-taken");
-  if (Block.attributes().has(MachineBasicBlockAttribute::IRBlockAddressTaken)) {
-    std::string Attribute = "ir-block-address-taken";
-    const auto &IRBlockName = Block.attributes().irBlockName();
-    if (IRBlockName) {
-      Attribute.append(" %ir-block.");
-      Attribute.append(quoteName(*IRBlockName));
-    }
-    Attributes.push_back(std::move(Attribute));
-  } else {
-    const auto &IRBlockName = Block.attributes().irBlockName();
-    if (IRBlockName)
-      Attributes.push_back("%ir-block." + quoteName(*IRBlockName));
-  }
-  AddFlag(MachineBasicBlockAttribute::LandingPad, "landing-pad");
-  AddFlag(MachineBasicBlockAttribute::InlineAsmBrIndirectTarget, "inlineasm-br-indirect-target");
-  AddFlag(MachineBasicBlockAttribute::EHFuncletEntry, "ehfunclet-entry");
-  AddFlag(MachineBasicBlockAttribute::EHScopeEntry, "ehscope-entry");
-  if (Block.attributes().alignment().bytes() != 1) {
-    Attributes.push_back("align " + std::to_string(Block.attributes().alignment().bytes()));
-  }
-  const MachineBasicBlockSectionID Section = Block.attributes().sectionID();
-  if (!Section.isDefault()) {
-    std::string Value;
-    if (Section.kind() == MachineBasicBlockSectionKind::Exception)
-      Value = "Exception";
-    else if (Section.kind() == MachineBasicBlockSectionKind::Cold)
-      Value = "Cold";
-    else
-      Value = std::to_string(Section.number());
-    Attributes.push_back("bbsections " + Value);
-  }
-  const auto &ProfileID = Block.attributes().profileID();
-  if (ProfileID) {
-    const MachineBasicBlockProfileID Profile = *ProfileID;
-    Attributes.push_back("bb_id " + std::to_string(Profile.BaseID) + "." +
-                         std::to_string(Profile.CloneID));
-  }
-  if (Block.attributes().callFrameSize() != 0) {
-    Attributes.push_back("call-frame-size " + std::to_string(Block.attributes().callFrameSize()));
-  }
-  if (!Attributes.empty()) {
-    Output.append(" (");
-    for (std::size_t Index = 0; Index < Attributes.size(); ++Index) {
-      if (Index != 0)
-        Output.append(", ");
-      Output.append(Attributes[Index]);
-    }
-    Output.push_back(')');
-  }
-  Output.append(":\n");
-
-  bool HasLineAttributes = false;
-  if (!Block.successors().empty()) {
-    Output.append("  successors: ");
-    for (std::size_t Index = 0; Index < Block.successors().size(); ++Index) {
-      if (Index != 0)
-        Output.append(", ");
-      const MachineSuccessor &Successor = Block.successors()[Index];
-      if (Successor.Block == nullptr || !BlockIDs.contains(Successor.Block)) {
-        return makeUnexpected(ErrorCode::VerificationError,
-                              "successor references an unlinked block");
-      }
-      appendBlockReference(*Successor.Block);
-      Output.append("(0x");
-      Output.append(hexadecimalWords(
-          std::array{static_cast<std::uint64_t>(Successor.Probability.rawValue())}, 32));
-      Output.push_back(')');
-    }
-    Output.push_back('\n');
-    HasLineAttributes = true;
-  }
-  if (!Block.liveIns().empty()) {
-    Output.append("  liveins: ");
-    for (std::size_t Index = 0; Index < Block.liveIns().size(); ++Index) {
-      if (Index != 0)
-        Output.append(", ");
-      const MachineBasicBlockLiveIn &LiveIn = Block.liveIns()[Index];
-      if (auto Printed = appendPhysicalRegister(LiveIn.PhysReg); !Printed)
-        return Printed;
-      if (LiveIn.Lanes != LaneMask::all()) {
-        Output.append(": 0x");
-        Output.append(hexadecimalWords(std::array{LiveIn.Lanes.rawValue()}, 64));
-      }
-    }
-    Output.push_back('\n');
-    HasLineAttributes = true;
-  }
-
-  if (HasLineAttributes && Block.firstInstruction() != nullptr)
-    Output.push_back('\n');
-
-  bool InBundle = false;
-  for (const MachineInstr *Instruction = Block.firstInstruction(); Instruction != nullptr;
-       Instruction = Instruction->next()) {
-    if (auto Printed = printInstruction(*Instruction); !Printed)
-      return Printed;
-    const bool HasPredecessor = Instruction->flags().has(MachineInstrFlag::BundledWithPred);
-    const bool HasSuccessor = Instruction->flags().has(MachineInstrFlag::BundledWithSucc);
-    if (!InBundle && HasSuccessor && !HasPredecessor) {
-      Output.append(" {");
-      InBundle = true;
-    }
-    Output.push_back('\n');
-    if (InBundle && !HasSuccessor) {
-      Output.append("  }\n");
-      InBundle = false;
-    }
-  }
-  if (InBundle) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "unterminated instruction bundle cannot be printed");
-  }
-  return {};
-}
-
-Expected<std::string> BodyPrinter::run() {
-  auto Verification = MachineVerifier::verify(
-      Function, Target,
-      MachineVerifierOptions{
-          .Mode = MachineVerifierMode::Generic, .Stage = std::nullopt, .VerifyProperties = false});
-  if (!Verification)
-    return std::unexpected(Verification.error());
-  if (auto Initialized = initialize(); !Initialized)
-    return std::unexpected(Initialized.error());
-
-  bool First = true;
-  for (const MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr;
-       Block = Block->next()) {
-    if (!First)
-      Output.push_back('\n');
-    First = false;
-    if (auto Printed = printBlock(*Block); !Printed)
-      return std::unexpected(Printed.error());
-  }
-  return std::move(Output);
-}
-
-} // namespace
-
-Expected<std::string> printMachineFunctionBody(const MachineFunction &Function,
-                                               const TargetDescription &Target,
-                                               const MIParserContext &Context,
-                                               MIPrinterOptions Options) {
-  return BodyPrinter(Function, Target, Context, Options).run();
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRDataParser.cpp b/backend/lib/MIR/MIRDataParser.cpp
deleted file mode 100644
index 2ac1f2d..0000000
--- a/backend/lib/MIR/MIRDataParser.cpp
+++ /dev/null
@@ -1,287 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRDocumentParser.h"
-#include "MIRDocumentReferenceValidation.h"
-#include "MIRMetadataTextParser.h"
-#include "MIRParserUtilities.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineConstantPool.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionAttributes.h"
-#include "rcc/CodeGen/MachineFunctionProperties.h"
-#include "rcc/CodeGen/MachineFunctionRecords.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineJumpTableInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/MachineVerifier.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-
-#include <algorithm>
-#include <array>
-#include <cstddef>
-#include <cstdint>
-#include <initializer_list>
-#include <limits>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <unordered_map>
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-
-using parser_detail::parseBool;
-using parser_detail::parsePrefixedID;
-using parser_detail::parseSigned;
-using parser_detail::parseUnsigned;
-using parser_detail::parseUnsigned32;
-using parser_detail::trim;
-
-bool MIRDocumentParser::parseConstants(const yaml::Node &Root, MachineFunction &Function,
-                                       MIParserContext &Context) {
-  const yaml::Node *Constants = mappingValue(Root, "constants");
-  if (Constants == nullptr)
-    return false;
-  if (requireKind(*Constants, yaml::NodeKind::Sequence, "constant pool"))
-    return true;
-  constexpr std::array Keys{
-      std::string_view{"id"},
-      std::string_view{"value"},
-      std::string_view{"alignment"},
-      std::string_view{"isTargetSpecific"},
-  };
-  std::vector<LLVMNamedTypeDefinition> NamedTypes;
-  const std::string_view DataLayout = effectiveDataLayout();
-  if (ActiveDocument->EmbeddedIR) {
-    const auto Definitions = ActiveDocument->EmbeddedIR->typeDefinitions();
-    NamedTypes.reserve(Definitions.size());
-    for (const EmbeddedIRTypeDefinition &Definition : Definitions) {
-      NamedTypes.push_back({.Name = Definition.Name,
-                            .Definition = Definition.Definition,
-                            .NumericName = Definition.NumericName});
-    }
-  }
-  std::unordered_set<std::uint32_t> IDs;
-  for (const yaml::NodeID ConstantID : Constants->sequence()) {
-    const yaml::Node *Constant = node(ConstantID);
-    if (Constant == nullptr ||
-        requireKind(*Constant, yaml::NodeKind::Mapping, "constant pool entry") ||
-        validateKeys(*Constant, Keys, "constant pool entry")) {
-      return true;
-    }
-    const yaml::Node *IDNode = mappingValue(*Constant, "id");
-    const yaml::Node *ValueNode = mappingValue(*Constant, "value");
-    if (IDNode == nullptr || ValueNode == nullptr)
-      return fail(Constant->range(), "constant pool entry requires 'id' and 'value'");
-    std::uint64_t WideID = 0;
-    if (unsignedValue(*IDNode, WideID, "a 32-bit constant pool ID") ||
-        WideID > std::numeric_limits<std::uint32_t>::max()) {
-      return true;
-    }
-    const auto TextID = static_cast<std::uint32_t>(WideID);
-    if (!IDs.insert(TextID).second)
-      return fail(IDNode->range(), "duplicate constant pool ID");
-
-    bool IsTargetSpecific = false;
-    if (const yaml::Node *TargetNode = mappingValue(*Constant, "isTargetSpecific")) {
-      if (boolean(*TargetNode, IsTargetSpecific))
-        return true;
-    }
-    if (IsTargetSpecific) {
-      std::string_view ValueText;
-      if (scalar(*ValueNode, ValueText, "target constant"))
-        return true;
-      auto TargetConstantValue = Target.mirText().parseTargetConstant(ValueText);
-      if (!TargetConstantValue)
-        return importError(ValueNode->range(), TargetConstantValue.error(), "mir-target-constant");
-      auto Emission = TargetConstantValue->emit();
-      if (!Emission)
-        return importError(ValueNode->range(), Emission.error(), "mir-target-constant");
-      auto RequiredAlignment = TargetConstantValue->requiredAlignment();
-      if (!RequiredAlignment)
-        return importError(ValueNode->range(), RequiredAlignment.error(), "mir-target-constant");
-
-      MachineConstantPoolEntryDesc Description;
-      Description.Size = Emission->Bytes.size();
-      Description.Align = *RequiredAlignment;
-      Description.Value = std::move(*TargetConstantValue);
-      if (const yaml::Node *AlignmentNode = mappingValue(*Constant, "alignment")) {
-        if (alignment(*AlignmentNode, Description.Align, true))
-          return true;
-      }
-      auto Added = Function.constantPool().addEntry(std::move(Description));
-      if (!Added)
-        return importError(Constant->range(), Added.error());
-      Context.ConstantPoolItems.push_back({.TextID = TextID, .Index = *Added});
-      continue;
-    }
-
-    std::string_view ValueText;
-    if (scalar(*ValueNode, ValueText, "LLVM constant"))
-      return true;
-    const LLVMConstantSyntaxOptions ConstantOptions{
-        .DataLayout = DataLayout,
-        .NamedTypes = NamedTypes,
-    };
-    auto Data = parseLLVMConstant(trim(ValueText), ConstantOptions);
-    if (!Data)
-      return importError(ValueNode->range(), Data.error(), "mir-llvm-constant");
-    auto Size = llvmConstantStorageSize(Data->Type, ConstantOptions);
-    if (!Size)
-      return importError(ValueNode->range(), Size.error(), "mir-llvm-constant");
-
-    MachineConstantPoolEntryDesc Description;
-    Description.Size = *Size;
-    Description.Value = std::move(*Data);
-    if (const yaml::Node *AlignmentNode = mappingValue(*Constant, "alignment")) {
-      if (alignment(*AlignmentNode, Description.Align, true))
-        return true;
-    } else {
-      auto Preferred = llvmConstantPreferredAlignment(
-          std::get<GenericConstantData>(Description.Value).Type, ConstantOptions);
-      if (!Preferred)
-        return importError(ValueNode->range(), Preferred.error(), "mir-llvm-constant");
-      Description.Align = *Preferred;
-    }
-    auto Added = Function.constantPool().addEntry(std::move(Description));
-    if (!Added)
-      return importError(Constant->range(), Added.error());
-    Context.ConstantPoolItems.push_back({.TextID = TextID, .Index = *Added});
-  }
-  return false;
-}
-
-bool MIRDocumentParser::reserveJumpTables(const yaml::Node &Root, MachineFunction &Function,
-                                          MIParserContext &Context,
-                                          std::vector<PendingJumpTable> &Pending) {
-  const yaml::Node *JumpTable = mappingValue(Root, "jumpTable");
-  if (JumpTable == nullptr)
-    return false;
-  if (requireKind(*JumpTable, yaml::NodeKind::Mapping, "jump table"))
-    return true;
-  constexpr std::array JumpTableKeys{
-      std::string_view{"kind"},
-      std::string_view{"entries"},
-  };
-  if (validateKeys(*JumpTable, JumpTableKeys, "jump table"))
-    return true;
-  const yaml::Node *KindNode = mappingValue(*JumpTable, "kind");
-  if (KindNode == nullptr)
-    return fail(JumpTable->range(), "jump table requires 'kind'");
-  std::string_view KindName;
-  if (scalar(*KindNode, KindName, "jump table kind"))
-    return true;
-
-  JumpTableEntryEncoding Encoding;
-  std::uint8_t EntrySize = 8;
-  if (KindName == "block-address")
-    Encoding = JumpTableEntryEncoding::BlockAddress;
-  else if (KindName == "gp-rel64-block-address")
-    Encoding = JumpTableEntryEncoding::GPRelative64BlockAddress;
-  else if (KindName == "gp-rel32-block-address") {
-    Encoding = JumpTableEntryEncoding::GPRelative32BlockAddress;
-    EntrySize = 4;
-  } else if (KindName == "label-difference32") {
-    Encoding = JumpTableEntryEncoding::LabelDifference32;
-    EntrySize = 4;
-  } else if (KindName == "label-difference64")
-    Encoding = JumpTableEntryEncoding::LabelDifference64;
-  else if (KindName == "inline") {
-    Encoding = JumpTableEntryEncoding::Inline;
-    EntrySize = 4;
-  } else if (KindName == "custom32") {
-    Encoding = JumpTableEntryEncoding::Custom32;
-    EntrySize = 4;
-  } else {
-    return fail(KindNode->range(), "unknown enumerated scalar");
-  }
-
-  const yaml::Node *Entries = mappingValue(*JumpTable, "entries");
-  if (Entries == nullptr)
-    return false;
-  if (requireKind(*Entries, yaml::NodeKind::Sequence, "jump table entries"))
-    return true;
-  constexpr std::array EntryKeys{
-      std::string_view{"id"},
-      std::string_view{"blocks"},
-  };
-  std::unordered_set<std::uint32_t> IDs;
-  for (const yaml::NodeID EntryID : Entries->sequence()) {
-    const yaml::Node *Entry = node(EntryID);
-    if (Entry == nullptr || requireKind(*Entry, yaml::NodeKind::Mapping, "jump table entry") ||
-        validateKeys(*Entry, EntryKeys, "jump table entry")) {
-      return true;
-    }
-    const yaml::Node *IDNode = mappingValue(*Entry, "id");
-    if (IDNode == nullptr)
-      return fail(Entry->range(), "jump table entry requires 'id'");
-    std::uint64_t WideID = 0;
-    if (unsignedValue(*IDNode, WideID, "a 32-bit jump table ID") ||
-        WideID > std::numeric_limits<std::uint32_t>::max()) {
-      return true;
-    }
-    const auto TextID = static_cast<std::uint32_t>(WideID);
-    if (!IDs.insert(TextID).second)
-      return fail(IDNode->range(), "duplicate jump table ID");
-    auto Reserved = Function.jumpTableInfo().reserveTable();
-    if (!Reserved)
-      return importError(Entry->range(), Reserved.error());
-    PendingJumpTable NewPending{
-        .Index = *Reserved,
-        .TextID = TextID,
-        .Encoding = Encoding,
-        .EntrySize = EntrySize,
-        .Blocks = {},
-    };
-    if (const yaml::Node *Blocks = mappingValue(*Entry, "blocks")) {
-      if (requireKind(*Blocks, yaml::NodeKind::Sequence, "jump table blocks"))
-        return true;
-      for (const yaml::NodeID BlockID : Blocks->sequence()) {
-        const yaml::Node *BlockNode = node(BlockID);
-        std::string_view Text;
-        if (BlockNode == nullptr || scalar(*BlockNode, Text, "basic block reference"))
-          return true;
-        NewPending.Blocks.emplace_back(Text);
-      }
-    }
-    if (NewPending.Blocks.empty())
-      return fail(Entry->range(), "jump table entry must contain at least one block");
-    Context.JumpTables.push_back({.TextID = TextID, .Index = *Reserved});
-    Pending.push_back(std::move(NewPending));
-  }
-  return false;
-}
-
-bool MIRDocumentParser::defineJumpTables(MachineFunction &Function,
-                                         std::span<const PendingJumpTable> Pending) {
-  for (const PendingJumpTable &Table : Pending) {
-    MachineJumpTableDesc Description;
-    Description.Encoding = Table.Encoding;
-    Description.EntrySize = Table.EntrySize;
-    Description.Align = *Alignment::create(Table.EntrySize);
-    for (const std::string &Text : Table.Blocks) {
-      MachineBasicBlock *Block = nullptr;
-      if (parseBlockReference(Text, Result.Source.range(0, 0), Function, Block))
-        return true;
-      if (Block == nullptr)
-        return fail(Result.Source.range(0, 0), "reference to undefined machine basic block");
-      Description.Targets.push_back(Block);
-    }
-    auto DefineResult =
-        Function.jumpTableInfo().defineReservedTable(Table.Index, std::move(Description));
-    if (!DefineResult)
-      return importError(Result.Source.range(0, 0), DefineResult.error());
-  }
-  return false;
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRDocument.cpp b/backend/lib/MIR/MIRDocument.cpp
deleted file mode 100644
index ad9ec40..0000000
--- a/backend/lib/MIR/MIRDocument.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "rcc/MIR/MIRDocument.h"
-
-#include "MIRDocumentParser.h"
-
-#include <string>
-#include <utility>
-
-namespace rcc::mir {
-
-MIRDocument::MIRDocument() = default;
-MIRDocument::MIRDocument(CompilationUnit Unit) : Unit(std::move(Unit)) {}
-MIRDocument::MIRDocument(MIRDocument &&) noexcept = default;
-MIRDocument &MIRDocument::operator=(MIRDocument &&) noexcept = default;
-MIRDocument::~MIRDocument() = default;
-
-MIRDocumentParseResult::MIRDocumentParseResult(MIRDocumentParseResult &&) noexcept = default;
-MIRDocumentParseResult &
-MIRDocumentParseResult::operator=(MIRDocumentParseResult &&) noexcept = default;
-MIRDocumentParseResult::~MIRDocumentParseResult() = default;
-
-MIRDocumentParseResult parseMIRDocument(const TargetDescription &Target, std::string SourceName,
-                                        std::string SourceText, MIRDocumentParserOptions Options) {
-  return MIRDocumentParser(Target, std::move(SourceName), std::move(SourceText), std::move(Options))
-      .run();
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRDocumentParser.cpp b/backend/lib/MIR/MIRDocumentParser.cpp
deleted file mode 100644
index 08627d5..0000000
--- a/backend/lib/MIR/MIRDocumentParser.cpp
+++ /dev/null
@@ -1,398 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRDocumentParser.h"
-
-#include "MIRDocumentReferenceValidation.h"
-#include "MIRMetadataTextParser.h"
-#include "MIRParserUtilities.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineConstantPool.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionAttributes.h"
-#include "rcc/CodeGen/MachineFunctionProperties.h"
-#include "rcc/CodeGen/MachineFunctionRecords.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineJumpTableInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/MachineVerifier.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-
-#include <algorithm>
-#include <array>
-#include <cstddef>
-#include <cstdint>
-#include <initializer_list>
-#include <limits>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <unordered_map>
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-
-using parser_detail::parseBool;
-using parser_detail::parsePrefixedID;
-using parser_detail::parseSigned;
-using parser_detail::parseUnsigned;
-using parser_detail::parseUnsigned32;
-using parser_detail::trim;
-
-bool MIRDocumentParser::fail(const TextRange &Range, std::string Message, std::string Category) {
-  if (Result.Diagnostics.empty()) {
-    Result.Diagnostics.push_back(TextDiagnostic{
-        .Severity = DiagnosticSeverity::Error,
-        .Category = std::move(Category),
-        .Message = std::move(Message),
-        .SourceName = std::string(Result.Source.name()),
-        .Range = Range,
-    });
-  }
-  return true;
-}
-
-bool MIRDocumentParser::importError(const TextRange &Range, const Error &Failure,
-                                    std::string Category) {
-  return fail(Range, std::string(Failure.message()), std::move(Category));
-}
-
-const yaml::Node *MIRDocumentParser::mappingValue(const yaml::Node &Mapping,
-                                                  std::string_view Key) const noexcept {
-  const auto Value = Mapping.mappingValue(Key);
-  return Value ? node(*Value) : nullptr;
-}
-
-std::string_view MIRDocumentParser::effectiveDataLayout() const noexcept {
-  if (!Options.DataLayout.empty())
-    return Options.DataLayout;
-  if (ActiveDocument != nullptr) {
-    if (const EmbeddedIRReferenceIndex *Embedded = ActiveDocument->embeddedIR()) {
-      if (const auto DataLayout = Embedded->dataLayout())
-        return *DataLayout;
-    }
-  }
-  return {};
-}
-
-LLVMConstantSyntaxOptions MIRDocumentParser::pointerLayoutOptions() const noexcept {
-  return {
-      .DataLayout = effectiveDataLayout(),
-      .NamedTypes = {},
-  };
-}
-
-bool MIRDocumentParser::requireKind(const yaml::Node &Node, yaml::NodeKind Kind,
-                                    std::string_view Description) {
-  if (Node.kind() == Kind)
-    return false;
-  return fail(Node.range(), std::string(Description) + " has the wrong YAML node kind");
-}
-
-bool MIRDocumentParser::validateKeys(const yaml::Node &Mapping,
-                                     std::span<const std::string_view> Keys,
-                                     std::string_view Description) {
-  for (const yaml::MappingEntry &Entry : Mapping.mapping()) {
-    if (std::ranges::find(Keys, Entry.Key) == Keys.end()) {
-      return fail(Entry.KeyRange,
-                  "unknown " + std::string(Description) + " key '" + Entry.Key + "'");
-    }
-  }
-  return false;
-}
-
-bool MIRDocumentParser::scalar(const yaml::Node &Node, std::string_view &Value,
-                               std::string_view Description) {
-  if (requireKind(Node, yaml::NodeKind::Scalar, Description))
-    return true;
-  Value = Node.scalar();
-  return false;
-}
-
-bool MIRDocumentParser::boolean(const yaml::Node &Node, bool &Value) {
-  std::string_view Text;
-  if (scalar(Node, Text, "boolean") || !parseBool(Text, Value))
-    return fail(Node.range(), "expected 'true' or 'false'");
-  return false;
-}
-
-bool MIRDocumentParser::unsignedValue(const yaml::Node &Node, std::uint64_t &Value,
-                                      std::string_view Description) {
-  std::string_view Text;
-  if (scalar(Node, Text, Description) || !parseUnsigned(Text, Value))
-    return fail(Node.range(), "expected " + std::string(Description));
-  return false;
-}
-
-bool MIRDocumentParser::signedValue(const yaml::Node &Node, std::int64_t &Value,
-                                    std::string_view Description) {
-  std::string_view Text;
-  if (scalar(Node, Text, Description) || !parseSigned(Text, Value))
-    return fail(Node.range(), "expected " + std::string(Description));
-  return false;
-}
-
-bool MIRDocumentParser::alignment(const yaml::Node &Node, Alignment &Value, bool AllowZero) {
-  std::uint64_t Bytes = 0;
-  if (unsignedValue(Node, Bytes, "an unsigned alignment"))
-    return true;
-  if (Bytes == 0 && AllowZero) {
-    Value = Alignment{};
-    return false;
-  }
-  auto Parsed = Alignment::create(Bytes);
-  if (!Parsed)
-    return importError(Node.range(), Parsed.error());
-  Value = *Parsed;
-  return false;
-}
-
-bool MIRDocumentParser::physicalRegister(std::string_view Text, const TextRange &Range,
-                                         PhysicalRegister &Reg) {
-  Text = trim(Text);
-  if (!Text.starts_with('$') || Text.size() == 1)
-    return fail(Range, "physical register must use the '$name' MIR spelling");
-  const PhysicalRegisterDesc *Description = Target.registers().physicalRegister(Text.substr(1));
-  if (Description == nullptr)
-    return fail(Range, "unknown physical register '" + std::string(Text) + "'");
-  Reg = Description->Reg;
-  return false;
-}
-
-bool MIRDocumentParser::physicalRegister(const yaml::Node &Node, PhysicalRegister &Reg) {
-  std::string_view Text;
-  return scalar(Node, Text, "physical register") || physicalRegister(Text, Node.range(), Reg);
-}
-
-bool MIRDocumentParser::virtualRegister(std::string_view Text, const TextRange &Range,
-                                        MachineFunction &Function, MIParserContext &Context,
-                                        Register &Reg) {
-  const auto ID = parsePrefixedID(Text, "%");
-  if (!ID)
-    return fail(Range, "virtual register must use the '%N' MIR spelling");
-  auto Found =
-      std::ranges::find_if(Context.VirtualRegisters,
-                           [ID](const MIVirtualRegisterSlot &Slot) { return Slot.TextID == *ID; });
-  if (Found == Context.VirtualRegisters.end()) {
-    auto Created = Function.registerInfo().createVirtualRegister();
-    if (!Created)
-      return importError(Range, Created.error());
-    Context.VirtualRegisters.push_back({*ID, *Created});
-    Reg = *Created;
-    return false;
-  }
-  Reg = Found->Reg;
-  return false;
-}
-
-MIRDocumentParseResult MIRDocumentParser::run() {
-  yaml::ParseResult YAMLResult = yaml::parse(std::string(Result.Source.name()),
-                                             std::string(Result.Source.text()), Options.YAML);
-  if (!YAMLResult.succeeded()) {
-    const auto Diagnostics = YAMLResult.diagnostics();
-    Result.Diagnostics.assign(Diagnostics.begin(), Diagnostics.end());
-    return std::move(Result);
-  }
-  Stream = YAMLResult.stream();
-  if (Stream == nullptr || Stream->documents().empty()) {
-    static_cast<void>(fail(Result.Source.range(0, 0), "MIR stream contains no YAML documents"));
-    return std::move(Result);
-  }
-
-  MIRDocument Staging;
-  ActiveDocument = &Staging;
-  const auto IsEmptyDocument = [this](std::size_t Index) {
-    const yaml::Node *Root = node(Stream->documents()[Index].Root);
-    return Root != nullptr && Root->kind() == yaml::NodeKind::Null &&
-           Root->range().Begin.Offset == Root->range().End.Offset;
-  };
-  std::size_t FirstContent = 0;
-  while (FirstContent < Stream->documents().size() && IsEmptyDocument(FirstContent))
-    ++FirstContent;
-  if (FirstContent == Stream->documents().size()) {
-    static_cast<void>(fail(Stream->documents().front().Range,
-                           "MIR stream must contain at least one machine function document"));
-    return std::move(Result);
-  }
-
-  std::size_t FirstFunction = FirstContent;
-  const yaml::Node *FirstRoot = node(Stream->documents()[FirstContent].Root);
-  if (FirstRoot != nullptr && FirstRoot->kind() == yaml::NodeKind::Scalar) {
-    EmbeddedIRIndexResult Embedded = indexEmbeddedIR(
-        std::string(Result.Source.name()) + ":embedded-ir", std::string(FirstRoot->scalar()));
-    if (!Embedded.succeeded()) {
-      const auto Diagnostics = Embedded.diagnostics();
-      if (Diagnostics.empty()) {
-        static_cast<void>(
-            fail(FirstRoot->range(), "embedded LLVM IR indexing failed", "mir-embedded-ir"));
-      } else {
-        const TextDiagnostic &Diagnostic = Diagnostics.front();
-        const TextRange Range = scalarDiagnosticRange(*FirstRoot, Diagnostic.Range);
-        static_cast<void>(fail(Range, Diagnostic.Message, Diagnostic.Category));
-      }
-      return std::move(Result);
-    }
-    Staging.EmbeddedIR = std::move(Embedded).takeIndex();
-    FirstFunction = FirstContent + 1;
-  }
-
-  if (!effectiveDataLayout().empty()) {
-    auto PointerSize = llvmPointerSizeInBits(0, pointerLayoutOptions());
-    if (!PointerSize) {
-      static_cast<void>(importError(Stream->documents()[FirstContent].Range, PointerSize.error(),
-                                    "mir-data-layout"));
-      return std::move(Result);
-    }
-  }
-
-  bool SawFunction = false;
-  for (std::size_t Index = FirstFunction; Index < Stream->documents().size(); ++Index) {
-    if (IsEmptyDocument(Index))
-      continue;
-    const yaml::Node *Root = node(Stream->documents()[Index].Root);
-    if (Root == nullptr || requireKind(*Root, yaml::NodeKind::Mapping, "machine function") ||
-        parseFunction(*Root, Staging)) {
-      return std::move(Result);
-    }
-    SawFunction = true;
-  }
-  if (!SawFunction) {
-    static_cast<void>(fail(Stream->documents()[FirstContent].Range,
-                           "MIR stream must contain at least one machine function document"));
-    return std::move(Result);
-  }
-
-  auto UnitResult = Staging.Unit.verify();
-  if (!UnitResult) {
-    static_cast<void>(
-        fail(Stream->documents().back().Range, "parsed compilation unit failed verification: " +
-                                                   std::string(UnitResult.error().message())));
-    return std::move(Result);
-  }
-  ActiveDocument = nullptr;
-  Result.Document = std::move(Staging);
-  return std::move(Result);
-}
-
-bool MIRDocumentParser::parseFunction(const yaml::Node &Root, MIRDocument &Document) {
-  constexpr std::array Keys{
-      std::string_view{"name"},
-      std::string_view{"alignment"},
-      std::string_view{"exposesReturnsTwice"},
-      std::string_view{"legalized"},
-      std::string_view{"regBankSelected"},
-      std::string_view{"selected"},
-      std::string_view{"failedISel"},
-      std::string_view{"tracksRegLiveness"},
-      std::string_view{"hasWinCFI"},
-      std::string_view{"noPhis"},
-      std::string_view{"isSSA"},
-      std::string_view{"noVRegs"},
-      std::string_view{"hasFakeUses"},
-      std::string_view{"callsEHReturn"},
-      std::string_view{"callsUnwindInit"},
-      std::string_view{"hasEHContTarget"},
-      std::string_view{"hasEHScopes"},
-      std::string_view{"hasEHFunclets"},
-      std::string_view{"isOutlined"},
-      std::string_view{"debugInstrRef"},
-      std::string_view{"failsVerification"},
-      std::string_view{"tracksDebugUserValues"},
-      std::string_view{"registers"},
-      std::string_view{"liveins"},
-      std::string_view{"calleeSavedRegisters"},
-      std::string_view{"frameInfo"},
-      std::string_view{"fixedStack"},
-      std::string_view{"stack"},
-      std::string_view{"entry_values"},
-      std::string_view{"callSites"},
-      std::string_view{"debugValueSubstitutions"},
-      std::string_view{"constants"},
-      std::string_view{"machineFunctionInfo"},
-      std::string_view{"jumpTable"},
-      std::string_view{"machineMetadataNodes"},
-      std::string_view{"calledGlobals"},
-      std::string_view{"prefetch-targets"},
-      std::string_view{"body"},
-  };
-  const yaml::Node *NameNode = mappingValue(Root, "name");
-  if (NameNode == nullptr)
-    return fail(Root.range(), "missing required key 'name'");
-  if (validateKeys(Root, Keys, "machine function"))
-    return true;
-  std::string_view Name;
-  if (scalar(*NameNode, Name, "machine function name"))
-    return true;
-
-  const EmbeddedIRFunction *IRFunction = nullptr;
-  if (Document.EmbeddedIR) {
-    if (Name.empty()) {
-      std::size_t AnonymousOrdinal = 0;
-      for (std::size_t Index = 0; Index < Document.Unit.functionCount(); ++Index) {
-        const MachineFunction *Existing = Document.Unit.functionAt(Index);
-        if (Existing != nullptr && Existing->name().empty())
-          ++AnonymousOrdinal;
-      }
-      IRFunction = Document.EmbeddedIR->unnamedFunction(AnonymousOrdinal);
-    } else {
-      IRFunction = Document.EmbeddedIR->function(Name);
-    }
-    if (IRFunction == nullptr)
-      return fail(NameNode->range(),
-                  "function '" + std::string(Name) + "' isn't defined in the provided LLVM IR");
-  }
-
-  if (!Name.empty() && Document.Unit.function(Name) != nullptr)
-    return fail(NameNode->range(), "redefinition of machine function '" + std::string(Name) + "'");
-
-  auto Created = Document.Unit.createMachineFunction(std::string(Name));
-  if (!Created)
-    return importError(NameNode->range(), Created.error());
-  MachineFunction &Function = **Created;
-  ActiveFunction = &Function;
-
-  MIRFunctionDocumentInfo DocumentInfo{
-      .Function = Function.stableID(),
-      .NoPHIs = std::nullopt,
-      .IsSSA = std::nullopt,
-      .NoVRegs = std::nullopt,
-      .HasFakeUses = std::nullopt,
-  };
-  MIParserContext Context;
-  if (IRFunction != nullptr) {
-    Context.HasIRBlock = [IRFunction](std::string_view BlockName) {
-      return IRFunction->block(BlockName) != nullptr;
-    };
-  }
-
-  std::vector<PendingJumpTable> PendingJumpTables;
-  if (parseFunctionScalars(Root, Function, DocumentInfo) ||
-      parseMetadata(Root, Function, Context) || parseRegisters(Root, Function, Context) ||
-      parseStackObjects(Root, Function, Context) || parseConstants(Root, Function, Context) ||
-      reserveJumpTables(Root, Function, Context, PendingJumpTables) ||
-      parseBody(Root, Function, Context) || defineJumpTables(Function, PendingJumpTables) ||
-      parseFrameState(Root, Function, Context) ||
-      recomputeProperties(Root, Function, DocumentInfo) || parseTargetState(Root, Function) ||
-      parseFunctionRecords(Root, Function) || validateDocumentReferences(Function)) {
-    return true;
-  }
-
-  if (Options.VerifyMachineFunctions) {
-    auto Verified = MachineVerifier::verify(Function, Target);
-    if (!Verified)
-      return importError(Root.range(), Verified.error(), "mir-verifier");
-  }
-  Document.FunctionInfo.push_back(DocumentInfo);
-  ActiveFunction = nullptr;
-  return false;
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRDocumentParser.h b/backend/lib/MIR/MIRDocumentParser.h
deleted file mode 100644
index 4d1d1ea..0000000
--- a/backend/lib/MIR/MIRDocumentParser.h
+++ /dev/null
@@ -1,132 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-// NOLINTNEXTLINE(llvm-header-guard)
-#ifndef RCC_LIB_MIR_MIRDOCUMENTPARSER_H
-#define RCC_LIB_MIR_MIRDOCUMENTPARSER_H
-
-#include "rcc/CodeGen/MachineDebugInfo.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineJumpTableInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-#include "rcc/MIR/MIRDocument.h"
-
-#include <cstdint>
-#include <span>
-#include <string>
-#include <string_view>
-#include <utility>
-#include <vector>
-
-namespace rcc {
-
-class MachineBasicBlock;
-class MachineFunction;
-class MachineInstr;
-
-namespace mir {
-
-struct PendingJumpTable final {
-  JumpTableIndex Index;
-  std::uint32_t TextID = 0;
-  JumpTableEntryEncoding Encoding = JumpTableEntryEncoding::BlockAddress;
-  std::uint8_t EntrySize = 8;
-  std::vector<std::string> Blocks;
-};
-
-class MIRDocumentParser final {
-public:
-  MIRDocumentParser(const TargetDescription &Target, std::string SourceName, std::string SourceText,
-                    MIRDocumentParserOptions Options)
-      : Target(Target), Options(std::move(Options)),
-        Result(std::move(SourceName), std::move(SourceText)) {}
-
-  [[nodiscard]] MIRDocumentParseResult run();
-
-private:
-  [[nodiscard]] bool fail(const TextRange &Range, std::string Message,
-                          std::string Category = "mir-yaml");
-  [[nodiscard]] bool importError(const TextRange &Range, const Error &Failure,
-                                 std::string Category = "mir-yaml");
-  [[nodiscard]] const yaml::Node *node(yaml::NodeID ID) const noexcept {
-    return Stream->node(ID);
-  }
-  [[nodiscard]] const yaml::Node *mappingValue(const yaml::Node &Mapping,
-                                               std::string_view Key) const noexcept;
-  [[nodiscard]] bool requireKind(const yaml::Node &Node, yaml::NodeKind Kind,
-                                 std::string_view Description);
-  [[nodiscard]] bool validateKeys(const yaml::Node &Mapping, std::span<const std::string_view> Keys,
-                                  std::string_view Description);
-  [[nodiscard]] bool scalar(const yaml::Node &Node, std::string_view &Value,
-                            std::string_view Description);
-  [[nodiscard]] bool boolean(const yaml::Node &Node, bool &Value);
-  [[nodiscard]] bool unsignedValue(const yaml::Node &Node, std::uint64_t &Value,
-                                   std::string_view Description);
-  [[nodiscard]] bool signedValue(const yaml::Node &Node, std::int64_t &Value,
-                                 std::string_view Description);
-  [[nodiscard]] bool alignment(const yaml::Node &Node, Alignment &Value, bool AllowZero);
-  [[nodiscard]] bool physicalRegister(const yaml::Node &Node, PhysicalRegister &Reg);
-  [[nodiscard]] bool physicalRegister(std::string_view Text, const TextRange &Range,
-                                      PhysicalRegister &Reg);
-  [[nodiscard]] bool virtualRegister(std::string_view Text, const TextRange &Range,
-                                     MachineFunction &Function, MIParserContext &Context,
-                                     Register &Reg);
-  [[nodiscard]] Expected<MachineMetadataReference>
-  resolveMetadataReference(const MachineFunction &Function, std::uint32_t Slot) const;
-  [[nodiscard]] bool parseVariableDebugInfo(const yaml::Node &Entry, MachineFunction &Function,
-                                            MachineVariableDebugInfo &DebugInfo);
-  [[nodiscard]] bool parseFunction(const yaml::Node &Root, MIRDocument &Document);
-  [[nodiscard]] bool parseFunctionScalars(const yaml::Node &Root, MachineFunction &Function,
-                                          MIRFunctionDocumentInfo &DocumentInfo);
-  [[nodiscard]] bool recomputeProperties(const yaml::Node &Root, MachineFunction &Function,
-                                         const MIRFunctionDocumentInfo &DocumentInfo);
-  [[nodiscard]] bool parseRegisters(const yaml::Node &Root, MachineFunction &Function,
-                                    MIParserContext &Context);
-  [[nodiscard]] bool parseMetadata(const yaml::Node &Root, MachineFunction &Function,
-                                   MIParserContext &Context);
-  [[nodiscard]] bool parseStackObjects(const yaml::Node &Root, MachineFunction &Function,
-                                       MIParserContext &Context);
-  [[nodiscard]] bool parseConstants(const yaml::Node &Root, MachineFunction &Function,
-                                    MIParserContext &Context);
-  [[nodiscard]] bool parseFrameState(const yaml::Node &Root, MachineFunction &Function,
-                                     const MIParserContext &Context);
-  [[nodiscard]] bool reserveJumpTables(const yaml::Node &Root, MachineFunction &Function,
-                                       MIParserContext &Context,
-                                       std::vector<PendingJumpTable> &Pending);
-  [[nodiscard]] bool defineJumpTables(MachineFunction &Function,
-                                      std::span<const PendingJumpTable> Pending);
-  [[nodiscard]] bool parseBody(const yaml::Node &Root, MachineFunction &Function,
-                               MIParserContext &Context);
-  [[nodiscard]] TextRange scalarDiagnosticRange(const yaml::Node &Scalar,
-                                                const TextRange &ScalarRange) const noexcept;
-  [[nodiscard]] bool parseFunctionRecords(const yaml::Node &Root, MachineFunction &Function);
-  [[nodiscard]] bool parseTargetState(const yaml::Node &Root, MachineFunction &Function);
-  [[nodiscard]] bool convertTargetNode(const yaml::Node &Source, MIRTargetNode &Destination);
-  [[nodiscard]] bool validateDocumentReferences(const MachineFunction &Function);
-  [[nodiscard]] std::string_view effectiveDataLayout() const noexcept;
-  [[nodiscard]] LLVMConstantSyntaxOptions pointerLayoutOptions() const noexcept;
-
-  [[nodiscard]] MachineBasicBlock *blockAt(MachineFunction &Function,
-                                           std::uint32_t Number) const noexcept;
-  [[nodiscard]] MachineInstr *instructionAt(MachineFunction &Function, std::uint32_t Block,
-                                            std::uint32_t Offset) const noexcept;
-  [[nodiscard]] bool parseBlockReference(std::string_view Text, const TextRange &Range,
-                                         MachineFunction &Function, MachineBasicBlock *&Block);
-  [[nodiscard]] bool parseFrameReference(const yaml::Node &Node, const MIParserContext &Context,
-                                         FrameIndex &Index);
-  [[nodiscard]] bool parseSaveRestorePoints(const yaml::Node &Node, MachineFunction &Function,
-                                            std::vector<MachineFrameSaveRestorePoint> &Points);
-
-  const TargetDescription &Target;
-  MIRDocumentParserOptions Options;
-  MIRDocumentParseResult Result;
-  const yaml::Stream *Stream = nullptr;
-  MIRDocument *ActiveDocument = nullptr;
-  MachineFunction *ActiveFunction = nullptr;
-};
-
-} // namespace mir
-} // namespace rcc
-
-#endif // RCC_LIB_MIR_MIRDOCUMENTPARSER_H
diff --git a/backend/lib/MIR/MIRDocumentPrinter.cpp b/backend/lib/MIR/MIRDocumentPrinter.cpp
deleted file mode 100644
index 06998bb..0000000
--- a/backend/lib/MIR/MIRDocumentPrinter.cpp
+++ /dev/null
@@ -1,1499 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRDocumentReferenceValidation.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineCompilationStatus.h"
-#include "rcc/CodeGen/MachineConstantPool.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionAttributes.h"
-#include "rcc/CodeGen/MachineFunctionProperties.h"
-#include "rcc/CodeGen/MachineFunctionRecords.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineJumpTableInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-#include "rcc/MIR/MIDebugSyntax.h"
-#include "rcc/MIR/MIRDocument.h"
-
-#include <algorithm>
-#include <array>
-#include <charconv>
-#include <cstddef>
-#include <cstdint>
-#include <limits>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <unordered_set>
-#include <utility>
-#include <variant>
-#include <vector>
-
-namespace rcc::mir {
-namespace {
-
-enum class YAMLQuoting : std::uint8_t {
-  None,
-  Single,
-  Double,
-};
-
-[[nodiscard]] bool isASCIIAlphanumeric(unsigned char Character) noexcept {
-  return (Character >= '0' && Character <= '9') || (Character >= 'A' && Character <= 'Z') ||
-         (Character >= 'a' && Character <= 'z');
-}
-
-[[nodiscard]] bool isYAMLNumeric(std::string_view Value) noexcept {
-  if (Value.empty() || Value == "+" || Value == "-")
-    return false;
-  if (Value == ".nan" || Value == ".NaN" || Value == ".NAN")
-    return true;
-
-  std::string_view Tail = Value;
-  if (Tail.front() == '+' || Tail.front() == '-')
-    Tail.remove_prefix(1);
-  if (Tail == ".inf" || Tail == ".Inf" || Tail == ".INF")
-    return true;
-  if (Value.starts_with("0o")) {
-    return Value.size() > 2U &&
-           Value.substr(2).find_first_not_of("01234567") == std::string_view::npos;
-  }
-  if (Value.starts_with("0x")) {
-    return Value.size() > 2U &&
-           Value.substr(2).find_first_not_of("0123456789abcdefABCDEF") == std::string_view::npos;
-  }
-
-  if (Tail.empty() || Tail.front() == 'e' || Tail.front() == 'E')
-    return false;
-  std::size_t Position = 0;
-  if (Tail.front() == '.') {
-    ++Position;
-    if (Position == Tail.size() || Tail[Position] < '0' || Tail[Position] > '9')
-      return false;
-    while (Position < Tail.size() && Tail[Position] >= '0' && Tail[Position] <= '9')
-      ++Position;
-  } else {
-    while (Position < Tail.size() && Tail[Position] >= '0' && Tail[Position] <= '9')
-      ++Position;
-    if (Position == 0)
-      return false;
-  }
-
-  if (Position < Tail.size() && Tail[Position] == '.') {
-    ++Position;
-    while (Position < Tail.size() && Tail[Position] >= '0' && Tail[Position] <= '9')
-      ++Position;
-  }
-  if (Position == Tail.size())
-    return true;
-  if (Tail[Position] != 'e' && Tail[Position] != 'E')
-    return false;
-  ++Position;
-  if (Position < Tail.size() && (Tail[Position] == '+' || Tail[Position] == '-'))
-    ++Position;
-  const std::size_t ExponentBegin = Position;
-  while (Position < Tail.size() && Tail[Position] >= '0' && Tail[Position] <= '9')
-    ++Position;
-  return Position == Tail.size() && Position != ExponentBegin;
-}
-
-[[nodiscard]] YAMLQuoting yamlQuoting(std::string_view Value) noexcept {
-  if (Value.empty())
-    return YAMLQuoting::Single;
-
-  YAMLQuoting Result = YAMLQuoting::None;
-  const auto IsSpace = [](unsigned char Character) {
-    return Character == ' ' || Character == '\t' || Character == '\r' || Character == '\n' ||
-           Character == '\f' || Character == '\v';
-  };
-  if (IsSpace(static_cast<unsigned char>(Value.front())) ||
-      IsSpace(static_cast<unsigned char>(Value.back())) || Value == "null" || Value == "Null" ||
-      Value == "NULL" || Value == "~" || Value == "true" || Value == "True" || Value == "TRUE" ||
-      Value == "false" || Value == "False" || Value == "FALSE" || isYAMLNumeric(Value)) {
-    Result = YAMLQuoting::Single;
-  }
-
-  switch (Value.front()) {
-  case '-':
-  case '?':
-  case ':':
-  case '\\':
-  case ',':
-  case '[':
-  case ']':
-  case '{':
-  case '}':
-  case '#':
-  case '&':
-  case '*':
-  case '!':
-  case '|':
-  case '>':
-  case '\'':
-  case '"':
-  case '%':
-  case '@':
-  case '`':
-    Result = YAMLQuoting::Single;
-    break;
-  default:
-    break;
-  }
-
-  for (const char RawCharacter : Value) {
-    const auto Character = static_cast<unsigned char>(RawCharacter);
-    if (isASCIIAlphanumeric(Character))
-      continue;
-    switch (Character) {
-    case '_':
-    case '-':
-    case '^':
-    case '.':
-    case ',':
-    case ' ':
-    case '\t':
-      continue;
-    case '\n':
-    case '\r':
-    case 0x7f:
-      return YAMLQuoting::Double;
-    default:
-      if (Character <= 0x1fU || (Character & 0x80U) != 0)
-        return YAMLQuoting::Double;
-      Result = YAMLQuoting::Single;
-      break;
-    }
-  }
-  return Result;
-}
-
-[[nodiscard]] std::string yamlScalar(std::string_view Value) {
-  const YAMLQuoting Quoting = yamlQuoting(Value);
-  if (Quoting == YAMLQuoting::None)
-    return std::string(Value);
-
-  std::string Result;
-  Result.reserve(Value.size() + 2U);
-  const char Quote = Quoting == YAMLQuoting::Single ? '\'' : '"';
-  Result.push_back(Quote);
-  for (const char Character : Value) {
-    if (Quoting == YAMLQuoting::Single) {
-      Result.push_back(Character);
-      if (Character == '\'')
-        Result.push_back('\'');
-      continue;
-    }
-    switch (Character) {
-    case '\\':
-      Result.append("\\\\");
-      break;
-    case '"':
-      Result.append("\\\"");
-      break;
-    case '\0':
-      Result.append("\\0");
-      break;
-    case '\a':
-      Result.append("\\a");
-      break;
-    case '\b':
-      Result.append("\\b");
-      break;
-    case '\t':
-      Result.append("\\t");
-      break;
-    case '\n':
-      Result.append("\\n");
-      break;
-    case '\v':
-      Result.append("\\v");
-      break;
-    case '\f':
-      Result.append("\\f");
-      break;
-    case '\r':
-      Result.append("\\r");
-      break;
-    case '\x1b':
-      Result.append("\\e");
-      break;
-    default: {
-      const auto Byte = static_cast<unsigned char>(Character);
-      if (Byte < 0x20U || Byte == 0x7fU) {
-        static constexpr std::string_view Hex = "0123456789ABCDEF";
-        Result.append("\\x");
-        Result.push_back(Hex[Byte >> 4U]);
-        Result.push_back(Hex[Byte & 0xfU]);
-      } else {
-        Result.push_back(Character);
-      }
-      break;
-    }
-    }
-  }
-  Result.push_back(Quote);
-  return Result;
-}
-
-void appendBlockScalar(std::string &Output, std::string_view Text, std::size_t Indent) {
-  std::size_t Position = 0;
-  do {
-    Output.append(Indent, ' ');
-    const std::size_t End = Text.find('\n', Position);
-    if (End == std::string_view::npos) {
-      Output.append(Text.substr(Position));
-      Output.push_back('\n');
-      return;
-    }
-    Output.append(Text.substr(Position, End - Position));
-    Output.push_back('\n');
-    Position = End + 1U;
-  } while (Position < Text.size());
-}
-
-[[nodiscard]] std::optional<std::uint32_t> parseDecimal32(std::string_view Text) noexcept {
-  std::uint32_t Value = 0;
-  if (Text.empty())
-    return std::nullopt;
-  const auto [End, Error] = std::from_chars(Text.data(), Text.data() + Text.size(), Value, 10);
-  if (Error != std::errc{} || End != Text.data() + Text.size())
-    return std::nullopt;
-  return Value;
-}
-
-[[nodiscard]] bool isDefaultFrameState(const MachineFrameState &State) {
-  return State == MachineFrameState{};
-}
-
-class MIRDocumentPrinter final {
-public:
-  MIRDocumentPrinter(const MIRDocument &Document, const TargetDescription &Target,
-                     MIRDocumentPrinterOptions Options)
-      : Document(Document), Target(Target), Options(std::move(Options)) {}
-
-  [[nodiscard]] Expected<std::string> run();
-
-private:
-  struct InstructionLocation final {
-    std::uint32_t Block = 0;
-    std::uint32_t Offset = 0;
-  };
-
-  [[nodiscard]] Expected<void> printFunction(const MachineFunction &Function,
-                                             const MIRFunctionDocumentInfo *DocumentInfo);
-  [[nodiscard]] Expected<MIParserContext> createBodyContext(const MachineFunction &Function) const;
-  [[nodiscard]] Expected<void> printRegisters(const MachineFunction &Function,
-                                              const MIParserContext &Context);
-  [[nodiscard]] Expected<void> printFrameInfo(const MachineFunction &Function,
-                                              const MIParserContext &Context);
-  [[nodiscard]] Expected<void> printStackObjects(const MachineFunction &Function,
-                                                 const MIParserContext &Context, bool Fixed);
-  [[nodiscard]] Expected<void> printConstants(const MachineFunction &Function,
-                                              const MIParserContext &Context);
-  [[nodiscard]] Expected<void> printJumpTable(const MachineFunction &Function,
-                                              const MIParserContext &Context);
-  [[nodiscard]] Expected<void> printMetadata(const MachineFunction &Function,
-                                             const MIParserContext &Context);
-  [[nodiscard]] Expected<void> printTargetState(const MachineFunction &Function);
-  [[nodiscard]] Expected<void> printFunctionRecords(const MachineFunction &Function,
-                                                    const MIParserContext &Context);
-  [[nodiscard]] Expected<void> verifyOmittedEmbeddedIRLayout(const MachineFunction &Function) const;
-
-  [[nodiscard]] Expected<std::string> physicalRegister(PhysicalRegister Register) const;
-  [[nodiscard]] Expected<std::string> frameReference(FrameIndex Index,
-                                                     const MIParserContext &Context) const;
-  [[nodiscard]] Expected<std::string> metadataReference(MachineMetadataReference Reference,
-                                                        const MIParserContext &Context) const;
-  [[nodiscard]] Expected<std::string> metadataValue(const MachineMetadataValue &Value,
-                                                    const MIParserContext &Context) const;
-  [[nodiscard]] Expected<std::string> debugLocation(const MachineDebugLocation &Location,
-                                                    const MIParserContext &Context) const;
-  [[nodiscard]] Expected<std::string> diLocation(const MachineDILocation &Location,
-                                                 std::size_t FrameIndex,
-                                                 const MIParserContext &Context) const;
-  [[nodiscard]] Expected<InstructionLocation> instructionLocation(const MachineFunction &Function,
-                                                                  MachineInstrStableID ID) const;
-  [[nodiscard]] Expected<std::string> blockReference(const MachineFunction &Function,
-                                                     MachineBlockStableID ID) const;
-  [[nodiscard]] Expected<std::string> targetNode(const MIRTargetNode &Node) const;
-  [[nodiscard]] const MIRFunctionDocumentInfo *
-  documentInfo(const MachineFunction &Function) const noexcept;
-
-  void printBoolean(std::string_view Key, bool Value, bool Always = false);
-  void printUnsigned(std::string_view Key, std::uint64_t Value, bool Always = false);
-  void printSigned(std::string_view Key, std::int64_t Value, bool Always = false);
-
-  const MIRDocument &Document;
-  const TargetDescription &Target;
-  MIRDocumentPrinterOptions Options;
-  std::string Output;
-};
-
-void MIRDocumentPrinter::printBoolean(std::string_view Key, bool Value, bool Always) {
-  if (!Always && Options.Mode == MIPrintMode::Readable && !Value)
-    return;
-  Output.append(Key);
-  Output.append(Value ? ": true\n" : ": false\n");
-}
-
-void MIRDocumentPrinter::printUnsigned(std::string_view Key, std::uint64_t Value, bool Always) {
-  if (!Always && Options.Mode == MIPrintMode::Readable && Value == 0)
-    return;
-  Output.append(Key);
-  Output.append(": ");
-  Output.append(std::to_string(Value));
-  Output.push_back('\n');
-}
-
-void MIRDocumentPrinter::printSigned(std::string_view Key, std::int64_t Value, bool Always) {
-  if (!Always && Options.Mode == MIPrintMode::Readable && Value == 0)
-    return;
-  Output.append(Key);
-  Output.append(": ");
-  Output.append(std::to_string(Value));
-  Output.push_back('\n');
-}
-
-Expected<std::string> MIRDocumentPrinter::physicalRegister(PhysicalRegister Register) const {
-  const auto Name = Target.registers().physicalRegisterMIRName(Register);
-  if (!Name) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "physical register has no canonical MIR name");
-  }
-  return "$" + std::string(*Name);
-}
-
-const MIRFunctionDocumentInfo *
-MIRDocumentPrinter::documentInfo(const MachineFunction &Function) const noexcept {
-  const auto Infos = Document.functionDocumentInfo();
-  const auto Found = std::ranges::find_if(Infos, [&Function](const MIRFunctionDocumentInfo &Info) {
-    return Info.Function == Function.stableID();
-  });
-  return Found == Infos.end() ? nullptr : &*Found;
-}
-
-Expected<void>
-MIRDocumentPrinter::verifyOmittedEmbeddedIRLayout(const MachineFunction &Function) const {
-  if (Options.EmitEmbeddedIR)
-    return {};
-
-  const EmbeddedIRReferenceIndex *Embedded = Document.embeddedIR();
-  if (Embedded == nullptr)
-    return {};
-
-  bool HasLayoutDependentContent = false;
-  for (const VirtualRegisterInfo &RegisterInfo : Function.registerInfo().virtualRegisters()) {
-    if (!RegisterInfo.IsTombstone && RegisterInfo.Type &&
-        RegisterInfo.Type->isPointerOrPointerVector()) {
-      HasLayoutDependentContent = true;
-      break;
-    }
-  }
-  if (!HasLayoutDependentContent) {
-    for (const MachineConstantPoolEntry &Entry : Function.constantPool().entries()) {
-      const MachineConstantPoolEntryDesc *Description = Entry.description();
-      if (Description != nullptr &&
-          std::holds_alternative<GenericConstantData>(Description->Value)) {
-        HasLayoutDependentContent = true;
-        break;
-      }
-    }
-  }
-  if (!HasLayoutDependentContent)
-    return {};
-
-  if (Options.DataLayout.empty()) {
-    return makeUnexpected(
-        ErrorCode::InvalidArgument,
-        "omitting embedded LLVM IR with layout-dependent MIR requires an explicit printer "
-        "DataLayout");
-  }
-
-  const LLVMConstantSyntaxOptions LayoutOptions{
-      .DataLayout = Options.DataLayout,
-      .NamedTypes = {},
-  };
-  for (const VirtualRegisterInfo &RegisterInfo : Function.registerInfo().virtualRegisters()) {
-    if (RegisterInfo.IsTombstone || !RegisterInfo.Type ||
-        !RegisterInfo.Type->isPointerOrPointerVector()) {
-      continue;
-    }
-    const auto AddressSpace = RegisterInfo.Type->addressSpace();
-    if (!AddressSpace) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "pointer virtual register has no address space");
-    }
-    auto PointerSize = llvmPointerSizeInBits(*AddressSpace, LayoutOptions);
-    if (!PointerSize) {
-      return makeUnexpected(ErrorCode::InvalidArgument,
-                            "printer DataLayout cannot determine pointer width: " +
-                                std::string(PointerSize.error().message()));
-    }
-    if (*PointerSize != RegisterInfo.Type->scalarBitWidth()) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "printer DataLayout does not match pointer virtual-register width");
-    }
-  }
-
-  for (const MachineConstantPoolEntry &Entry : Function.constantPool().entries()) {
-    const MachineConstantPoolEntryDesc *Description = Entry.description();
-    if (Description == nullptr)
-      continue;
-    const auto *Generic = std::get_if<GenericConstantData>(&Description->Value);
-    if (Generic == nullptr)
-      continue;
-    auto StorageSize = llvmConstantStorageSize(Generic->Type, LayoutOptions);
-    if (!StorageSize) {
-      return makeUnexpected(ErrorCode::InvalidArgument,
-                            "printer DataLayout cannot lay out generic constant: " +
-                                std::string(StorageSize.error().message()));
-    }
-    if (*StorageSize != Description->Size) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "printer DataLayout does not match generic constant storage size");
-    }
-  }
-  return {};
-}
-
-Expected<MIParserContext>
-MIRDocumentPrinter::createBodyContext(const MachineFunction &Function) const {
-  MIParserContext Context;
-  Context.SyncScopes.assign(Document.syncScopes().begin(), Document.syncScopes().end());
-  const auto VirtualRegisters = Function.registerInfo().virtualRegisters();
-  for (std::size_t Index = 0; Index < VirtualRegisters.size(); ++Index) {
-    if (VirtualRegisters[Index].IsTombstone)
-      continue;
-    auto Reg = Register::makeVirtual(Index);
-    if (!Reg)
-      return std::unexpected(Reg.error());
-    if (Index > std::numeric_limits<std::uint32_t>::max()) {
-      return makeUnexpected(ErrorCode::Unsupported,
-                            "MIR cannot represent more than 2^32 virtual registers");
-    }
-    Context.VirtualRegisters.push_back({.TextID = static_cast<std::uint32_t>(Index), .Reg = *Reg});
-  }
-
-  std::uint32_t StackID = 0;
-  std::uint32_t FixedID = 0;
-  for (const StackObject &Object : Function.frameInfo().objects()) {
-    const StackObjectDesc *Description = Object.description();
-    if (Description == nullptr)
-      continue;
-    MIFrameObjectSlot Slot{
-        .TextID = Object.isFixed() ? FixedID++ : StackID++,
-        .Index = Object.index(),
-        .Name = Description->AllocaName,
-    };
-    (Object.isFixed() ? Context.FixedStackObjects : Context.StackObjects)
-        .push_back(std::move(Slot));
-  }
-
-  std::uint32_t ConstantID = 0;
-  for (const MachineConstantPoolEntry &Entry : Function.constantPool().entries()) {
-    if (Entry.description() != nullptr)
-      Context.ConstantPoolItems.push_back({.TextID = ConstantID++, .Index = Entry.index()});
-  }
-  std::uint32_t JumpTableID = 0;
-  for (const MachineJumpTableEntry &Entry : Function.jumpTableInfo().tables()) {
-    if (Entry.description() != nullptr)
-      Context.JumpTables.push_back({.TextID = JumpTableID++, .Index = Entry.index()});
-  }
-
-  std::unordered_set<std::uint32_t> EmbeddedMetadataSlots;
-  if (const EmbeddedIRReferenceIndex *Embedded = Document.embeddedIR()) {
-    for (const EmbeddedIRMetadataDefinition &Definition : Embedded->metadataDefinitions()) {
-      const auto Slot = parseDecimal32(Definition.Name);
-      if (Slot) {
-        if (!EmbeddedMetadataSlots.insert(*Slot).second) {
-          return makeUnexpected(ErrorCode::VerificationError,
-                                "embedded LLVM IR metadata slots are not unique");
-        }
-        Context.Metadata.push_back(
-            {.TextID = *Slot, .Reference = MachineMetadataReference::embeddedIR(*Slot)});
-      }
-    }
-  }
-
-  std::unordered_set<std::uint32_t> UsedMetadataSlots = EmbeddedMetadataSlots;
-  for (const MachineMetadataNode &Node : Function.metadata().nodes()) {
-    if (!EmbeddedMetadataSlots.contains(Node.Slot))
-      UsedMetadataSlots.insert(Node.Slot);
-  }
-  std::uint64_t NextMetadataSlot = 0;
-  for (const MachineMetadataNode &Node : Function.metadata().nodes()) {
-    std::uint32_t TextID = Node.Slot;
-    if (EmbeddedMetadataSlots.contains(TextID)) {
-      while (NextMetadataSlot <= std::numeric_limits<std::uint32_t>::max() &&
-             UsedMetadataSlots.contains(static_cast<std::uint32_t>(NextMetadataSlot))) {
-        ++NextMetadataSlot;
-      }
-      if (NextMetadataSlot > std::numeric_limits<std::uint32_t>::max()) {
-        return makeUnexpected(ErrorCode::Unsupported, "MIR metadata text slot space is exhausted");
-      }
-      TextID = static_cast<std::uint32_t>(NextMetadataSlot);
-      UsedMetadataSlots.insert(TextID);
-      ++NextMetadataSlot;
-    }
-    Context.Metadata.push_back(
-        {.TextID = TextID, .Reference = MachineMetadataReference::machineFunction(Node.Slot)});
-  }
-  return Context;
-}
-
-Expected<std::string> MIRDocumentPrinter::frameReference(FrameIndex Index,
-                                                         const MIParserContext &Context) const {
-  const auto Stack = std::ranges::find_if(
-      Context.StackObjects, [Index](const MIFrameObjectSlot &Slot) { return Slot.Index == Index; });
-  if (Stack != Context.StackObjects.end())
-    return "%stack." + std::to_string(Stack->TextID);
-  const auto Fixed =
-      std::ranges::find_if(Context.FixedStackObjects,
-                           [Index](const MIFrameObjectSlot &Slot) { return Slot.Index == Index; });
-  if (Fixed != Context.FixedStackObjects.end())
-    return "%fixed-stack." + std::to_string(Fixed->TextID);
-  return makeUnexpected(ErrorCode::VerificationError,
-                        "frame state references an unknown stack object");
-}
-
-Expected<std::string> MIRDocumentPrinter::metadataReference(MachineMetadataReference Reference,
-                                                            const MIParserContext &Context) const {
-  if (!Reference.isValid())
-    return makeUnexpected(ErrorCode::VerificationError, "invalid metadata reference");
-  const auto Slot =
-      std::ranges::find_if(Context.Metadata, [Reference](const MIMetadataSlot &Candidate) {
-        return Candidate.Reference == Reference;
-      });
-  if (Slot == Context.Metadata.end()) {
-    return makeUnexpected(ErrorCode::VerificationError, "metadata reference has no MIR text slot");
-  }
-  return "!" + std::to_string(Slot->TextID);
-}
-
-Expected<std::string> MIRDocumentPrinter::metadataValue(const MachineMetadataValue &Value,
-                                                        const MIParserContext &Context) const {
-  if (const MachineMetadataReference *Reference = Value.reference())
-    return metadataReference(*Reference, Context);
-  const MachineDIExpression *Expression = Value.expression();
-  if (Expression == nullptr)
-    return makeUnexpected(ErrorCode::VerificationError, "metadata value is not printable");
-  return formatDIExpression(Expression->elements());
-}
-
-Expected<std::string> MIRDocumentPrinter::diLocation(const MachineDILocation &Location,
-                                                     std::size_t FrameIndex,
-                                                     const MIParserContext &Context) const {
-  if (FrameIndex >= Location.inlineChain().size()) {
-    return makeUnexpected(ErrorCode::VerificationError,
-                          "inline DILocation has an invalid frame chain");
-  }
-  const MachineDILocationFrame &Frame = Location.inlineChain()[FrameIndex];
-  auto Scope = metadataReference(Frame.Scope, Context);
-  if (!Scope)
-    return std::unexpected(Scope.error());
-  std::string Text = "!DILocation(line: " + std::to_string(Frame.Line);
-  if (Options.Mode == MIPrintMode::Complete || Frame.Column != 0)
-    Text.append(", column: " + std::to_string(Frame.Column));
-  Text.append(", scope: " + *Scope);
-  if (FrameIndex + 1U < Location.inlineChain().size()) {
-    auto Nested = diLocation(Location, FrameIndex + 1U, Context);
-    if (!Nested)
-      return std::unexpected(Nested.error());
-    Text.append(", inlinedAt: " + *Nested);
-  } else if (Location.terminalInlinedAt()) {
-    auto Terminal = metadataReference(*Location.terminalInlinedAt(), Context);
-    if (!Terminal)
-      return std::unexpected(Terminal.error());
-    Text.append(", inlinedAt: " + *Terminal);
-  }
-  if (Options.Mode == MIPrintMode::Complete || Frame.IsImplicitCode)
-    Text.append(Frame.IsImplicitCode ? ", isImplicitCode: true" : ", isImplicitCode: false");
-  if (Options.Mode == MIPrintMode::Complete || Frame.AtomGroup != 0)
-    Text.append(", atomGroup: " + std::to_string(Frame.AtomGroup));
-  if (Options.Mode == MIPrintMode::Complete || Frame.AtomRank != 0)
-    Text.append(", atomRank: " + std::to_string(Frame.AtomRank));
-  Text.push_back(')');
-  return Text;
-}
-
-Expected<std::string> MIRDocumentPrinter::debugLocation(const MachineDebugLocation &Location,
-                                                        const MIParserContext &Context) const {
-  if (const MachineMetadataReference *Reference = Location.reference())
-    return metadataReference(*Reference, Context);
-  if (const MachineDILocation *Inline = Location.inlineLocation())
-    return diLocation(*Inline, 0, Context);
-  return makeUnexpected(ErrorCode::VerificationError, "debug location is not printable");
-}
-
-Expected<MIRDocumentPrinter::InstructionLocation>
-MIRDocumentPrinter::instructionLocation(const MachineFunction &Function,
-                                        MachineInstrStableID ID) const {
-  std::uint64_t BlockNumber = 0;
-  for (const MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr;
-       Block = Block->next(), ++BlockNumber) {
-    if (BlockNumber > std::numeric_limits<std::uint32_t>::max())
-      break;
-    std::uint64_t Offset = 0;
-    for (const MachineInstr *Instruction = Block->firstInstruction(); Instruction != nullptr;
-         Instruction = Instruction->next(), ++Offset) {
-      if (Instruction->stableID() != ID)
-        continue;
-      if (Offset > std::numeric_limits<std::uint32_t>::max()) {
-        return makeUnexpected(ErrorCode::Unsupported, "MIR instruction offset exceeds 32 bits");
-      }
-      return InstructionLocation{static_cast<std::uint32_t>(BlockNumber),
-                                 static_cast<std::uint32_t>(Offset)};
-    }
-  }
-  return makeUnexpected(ErrorCode::VerificationError,
-                        "function record references an unlinked instruction");
-}
-
-Expected<std::string> MIRDocumentPrinter::blockReference(const MachineFunction &Function,
-                                                         MachineBlockStableID ID) const {
-  std::uint64_t Number = 0;
-  for (const MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr;
-       Block = Block->next(), ++Number) {
-    if (Block->stableID() == ID) {
-      if (Number > std::numeric_limits<std::uint32_t>::max())
-        break;
-      return "%bb." + std::to_string(Number);
-    }
-  }
-  return makeUnexpected(ErrorCode::VerificationError,
-                        "frame record references an unlinked basic block");
-}
-
-Expected<std::string> MIRDocumentPrinter::targetNode(const MIRTargetNode &Node) const {
-  switch (Node.Kind) {
-  case MIRTargetNodeKind::Null:
-    return std::string("null");
-  case MIRTargetNodeKind::Scalar:
-    return yamlScalar(Node.Scalar);
-  case MIRTargetNodeKind::Sequence: {
-    std::string Text = "[ ";
-    for (std::size_t Index = 0; Index < Node.Sequence.size(); ++Index) {
-      if (Index != 0)
-        Text.append(", ");
-      auto Element = targetNode(Node.Sequence[Index]);
-      if (!Element)
-        return std::unexpected(Element.error());
-      Text.append(*Element);
-    }
-    Text.append(" ]");
-    return Text;
-  }
-  case MIRTargetNodeKind::Mapping: {
-    std::string Text = "{ ";
-    for (std::size_t Index = 0; Index < Node.Mapping.size(); ++Index) {
-      if (Index != 0)
-        Text.append(", ");
-      Text.append(yamlScalar(Node.Mapping[Index].Key));
-      Text.append(": ");
-      auto Value = targetNode(Node.Mapping[Index].Value);
-      if (!Value)
-        return std::unexpected(Value.error());
-      Text.append(*Value);
-    }
-    Text.append(" }");
-    return Text;
-  }
-  case MIRTargetNodeKind::Count:
-    break;
-  }
-  return makeUnexpected(ErrorCode::VerificationError, "target MIR node has an invalid kind");
-}
-
-Expected<void> MIRDocumentPrinter::printRegisters(const MachineFunction &Function,
-                                                  const MIParserContext &Context) {
-  if (Context.VirtualRegisters.empty()) {
-    if (Options.Mode == MIPrintMode::Complete)
-      Output.append("registers: []\n");
-  } else {
-    Output.append("registers:\n");
-    for (const MIVirtualRegisterSlot &Slot : Context.VirtualRegisters) {
-      auto InfoResult = Function.registerInfo().virtualRegisterInfo(Slot.Reg);
-      if (!InfoResult)
-        return std::unexpected(InfoResult.error());
-      const VirtualRegisterInfo &Info = InfoResult->get();
-      std::string Class = "_";
-      if (Info.RegClass) {
-        const auto Name = Target.registers().registerClassMIRName(*Info.RegClass);
-        if (!Name)
-          return makeUnexpected(ErrorCode::VerificationError,
-                                "virtual register class has no canonical MIR name");
-        Class = *Name;
-      } else if (Info.Bank) {
-        const auto Name = Target.registers().registerBankMIRName(*Info.Bank);
-        if (!Name)
-          return makeUnexpected(ErrorCode::VerificationError,
-                                "virtual register bank has no canonical MIR name");
-        Class = *Name;
-      }
-      if (Info.AllocationHints.size() > 1) {
-        return makeUnexpected(
-            ErrorCode::Unsupported,
-            "fixed LLVM MIR can serialize only one simple preferred-register hint");
-      }
-
-      Output.append("  - { id: ");
-      Output.append(std::to_string(Slot.TextID));
-      Output.append(", class: ");
-      Output.append(yamlScalar(Class));
-      if (!Info.AllocationHints.empty()) {
-        auto Preferred = physicalRegister(Info.AllocationHints.front());
-        if (!Preferred)
-          return std::unexpected(Preferred.error());
-        Output.append(", preferred-register: ");
-        Output.append(yamlScalar(*Preferred));
-      }
-      if (Info.TargetFlags != 0) {
-        auto Names = Target.mirText().virtualRegisterFlagNames(Info.TargetFlags);
-        if (!Names)
-          return std::unexpected(Names.error());
-        Output.append(", flags: [ ");
-        for (std::size_t Index = 0; Index < Names->size(); ++Index) {
-          if (Index != 0)
-            Output.append(", ");
-          Output.append(yamlScalar((*Names)[Index]));
-        }
-        Output.append(" ]");
-      }
-      Output.append(" }\n");
-    }
-  }
-
-  if (Function.registerInfo().liveIns().empty()) {
-    if (Options.Mode == MIPrintMode::Complete)
-      Output.append("liveins: []\n");
-  } else {
-    Output.append("liveins:\n");
-    for (const PhysicalRegisterLiveIn &LiveIn : Function.registerInfo().liveIns()) {
-      auto Name = physicalRegister(LiveIn.PhysReg);
-      if (!Name)
-        return std::unexpected(Name.error());
-      Output.append("  - { reg: ");
-      Output.append(yamlScalar(*Name));
-      if (LiveIn.InitialVirtualRegister) {
-        const auto Slot = std::ranges::find_if(
-            Context.VirtualRegisters, [&LiveIn](const MIVirtualRegisterSlot &Candidate) {
-              return Candidate.Reg == *LiveIn.InitialVirtualRegister;
-            });
-        if (Slot == Context.VirtualRegisters.end()) {
-          return makeUnexpected(ErrorCode::VerificationError,
-                                "live-in references an unknown virtual register");
-        }
-        Output.append(", virtual-reg: ");
-        Output.append(yamlScalar("%" + std::to_string(Slot->TextID)));
-      }
-      Output.append(" }\n");
-    }
-  }
-
-  if (Function.records().hasCalleeSavedRegisters()) {
-    Output.append("calleeSavedRegisters: [ ");
-    const auto Registers = Function.records().calleeSavedRegisters();
-    for (std::size_t Index = 0; Index < Registers.size(); ++Index) {
-      if (Index != 0)
-        Output.append(", ");
-      auto Name = physicalRegister(Registers[Index]);
-      if (!Name)
-        return std::unexpected(Name.error());
-      Output.append(yamlScalar(*Name));
-    }
-    Output.append(" ]\n");
-  }
-  return {};
-}
-
-Expected<void> MIRDocumentPrinter::printFrameInfo(const MachineFunction &Function,
-                                                  const MIParserContext &Context) {
-  const MachineFrameState &State = Function.frameInfo().state();
-  if (Options.Mode == MIPrintMode::Readable && isDefaultFrameState(State))
-    return {};
-  if (State.MaxCallFrameSize &&
-      *State.MaxCallFrameSize > std::numeric_limits<std::uint32_t>::max()) {
-    return makeUnexpected(ErrorCode::Unsupported,
-                          "fixed LLVM MIR maxCallFrameSize is limited to 32 bits");
-  }
-  Output.append("frameInfo:\n");
-  const auto Bool = [this](std::string_view Key, bool Value) {
-    if (Options.Mode == MIPrintMode::Readable && !Value)
-      return;
-    Output.append("  ");
-    Output.append(Key);
-    Output.append(Value ? ": true\n" : ": false\n");
-  };
-  const auto Unsigned = [this](std::string_view Key, std::uint64_t Value) {
-    if (Options.Mode == MIPrintMode::Readable && Value == 0)
-      return;
-    Output.append("  ");
-    Output.append(Key);
-    Output.append(": ");
-    Output.append(std::to_string(Value));
-    Output.push_back('\n');
-  };
-
-  Bool("isFrameAddressTaken", State.IsFrameAddressTaken);
-  Bool("isReturnAddressTaken", State.IsReturnAddressTaken);
-  Bool("hasStackMap", State.HasStackMap);
-  Bool("hasPatchPoint", State.HasPatchPoint);
-  Unsigned("stackSize", State.StackSize);
-  if (Options.Mode == MIPrintMode::Complete || State.OffsetAdjustment != 0) {
-    Output.append("  offsetAdjustment: ");
-    Output.append(std::to_string(State.OffsetAdjustment));
-    Output.push_back('\n');
-  }
-  Unsigned("maxAlignment", State.MaxAlignment ? State.MaxAlignment->bytes() : 0);
-  Bool("adjustsStack", State.AdjustsStack);
-  Bool("hasCalls", State.HasCalls);
-  if (Options.Mode == MIPrintMode::Complete ||
-      State.FramePointerPolicy != MachineFramePointerPolicy::None) {
-    Output.append("  framePointerPolicy: ");
-    Output.append(getMachineFramePointerPolicyName(State.FramePointerPolicy));
-    Output.push_back('\n');
-  }
-  if (Options.Mode == MIPrintMode::Complete || State.StackProtector) {
-    std::string Reference;
-    if (State.StackProtector) {
-      auto PrintedReference = frameReference(*State.StackProtector, Context);
-      if (!PrintedReference)
-        return std::unexpected(PrintedReference.error());
-      Reference = std::move(*PrintedReference);
-    }
-    Output.append("  stackProtector: ");
-    Output.append(yamlScalar(Reference));
-    Output.push_back('\n');
-  }
-  if (Options.Mode == MIPrintMode::Complete || State.FunctionContext) {
-    std::string Reference;
-    if (State.FunctionContext) {
-      auto PrintedReference = frameReference(*State.FunctionContext, Context);
-      if (!PrintedReference)
-        return std::unexpected(PrintedReference.error());
-      Reference = std::move(*PrintedReference);
-    }
-    Output.append("  functionContext: ");
-    Output.append(yamlScalar(Reference));
-    Output.push_back('\n');
-  }
-  if (Options.Mode == MIPrintMode::Complete || State.MaxCallFrameSize) {
-    Unsigned("maxCallFrameSize",
-             State.MaxCallFrameSize.value_or(std::numeric_limits<std::uint32_t>::max()));
-  }
-  Unsigned("cvBytesOfCalleeSavedRegisters", State.CVBytesOfCalleeSavedRegisters);
-  Bool("hasOpaqueSPAdjustment", State.HasOpaqueSPAdjustment);
-  Bool("hasVAStart", State.HasVAStart);
-  Bool("hasMustTailInVarArgFunc", State.HasMustTailInVarArgFunc);
-  Bool("hasTailCall", State.HasTailCall);
-  Bool("isCalleeSavedInfoValid", State.IsCalleeSavedInfoValid);
-  Unsigned("localFrameSize", State.LocalFrameSize);
-
-  const auto PrintPoints =
-      [this, &Function](std::string_view Key,
-                        std::span<const MachineFrameSaveRestorePoint> Points) -> Expected<void> {
-    if (Points.empty())
-      return {};
-    Output.append("  ");
-    Output.append(Key);
-    Output.append(":\n");
-    for (const MachineFrameSaveRestorePoint &Point : Points) {
-      auto Block = blockReference(Function, Point.Block);
-      if (!Block)
-        return std::unexpected(Block.error());
-      Output.append("    - { point: ");
-      Output.append(yamlScalar(*Block));
-      if (!Point.Registers.empty()) {
-        Output.append(", registers: [ ");
-        for (std::size_t Index = 0; Index < Point.Registers.size(); ++Index) {
-          if (Index != 0)
-            Output.append(", ");
-          auto Name = physicalRegister(Point.Registers[Index]);
-          if (!Name)
-            return std::unexpected(Name.error());
-          Output.append(yamlScalar(*Name));
-        }
-        Output.append(" ]");
-      }
-      Output.append(" }\n");
-    }
-    return {};
-  };
-  if (auto Printed = PrintPoints("savePoint", State.SavePoints); !Printed)
-    return Printed;
-  return PrintPoints("restorePoint", State.RestorePoints);
-}
-
-Expected<void> MIRDocumentPrinter::printStackObjects(const MachineFunction &Function,
-                                                     const MIParserContext &Context, bool Fixed) {
-  const auto &Slots = Fixed ? Context.FixedStackObjects : Context.StackObjects;
-  if (Slots.empty()) {
-    if (Options.Mode == MIPrintMode::Complete)
-      Output.append(Fixed ? "fixedStack: []\n" : "stack: []\n");
-    return {};
-  }
-  Output.append(Fixed ? "fixedStack:\n" : "stack:\n");
-  for (const MIFrameObjectSlot &Slot : Slots) {
-    const StackObject *Object = Function.frameInfo().object(Slot.Index);
-    const StackObjectDesc *Description = Object == nullptr ? nullptr : Object->description();
-    if (Description == nullptr)
-      return makeUnexpected(ErrorCode::VerificationError, "MIR stack slot is a tombstone");
-    if (Description->IsDead || Description->AddressTaken || !Description->Lifetime.empty() ||
-        Description->TargetFlags != 0) {
-      return makeUnexpected(ErrorCode::Unsupported,
-                            "stack object contains state not represented by fixed LLVM MIR");
-    }
-
-    std::string_view Type;
-    switch (Description->Kind) {
-    case StackObjectKind::Default:
-    case StackObjectKind::FixedABI:
-      Type = "default";
-      break;
-    case StackObjectKind::FixedSpillSlot:
-    case StackObjectKind::SpillSlot:
-      Type = "spill-slot";
-      break;
-    case StackObjectKind::VariableSized:
-      Type = "variable-sized";
-      break;
-    case StackObjectKind::DynamicAlloca:
-    case StackObjectKind::CalleeSaved:
-    case StackObjectKind::EmergencySpill:
-    case StackObjectKind::Target:
-    case StackObjectKind::Count:
-      return makeUnexpected(ErrorCode::Unsupported,
-                            "stack object kind has no fixed LLVM MIR representation");
-    }
-
-    Output.append("  - { id: ");
-    Output.append(std::to_string(Slot.TextID));
-    if (!Fixed && Description->AllocaName) {
-      Output.append(", name: ");
-      Output.append(yamlScalar(*Description->AllocaName));
-    }
-    if (Options.Mode == MIPrintMode::Complete || Type != "default") {
-      Output.append(", type: ");
-      Output.append(Type);
-    }
-    if (Options.Mode == MIPrintMode::Complete || Description->Offset.value_or(0) != 0) {
-      Output.append(", offset: ");
-      Output.append(std::to_string(Description->Offset.value_or(0)));
-    }
-    if (Description->Kind != StackObjectKind::VariableSized) {
-      Output.append(", size: ");
-      Output.append(std::to_string(Description->Size.value_or(0)));
-    }
-    if (Options.Mode == MIPrintMode::Complete || Description->Align.bytes() != 1) {
-      Output.append(", alignment: ");
-      Output.append(std::to_string(Description->Align.bytes()));
-    }
-    if (Options.Mode == MIPrintMode::Complete || Description->Stack != StackID::defaultStack()) {
-      Output.append(", stack-id: ");
-      Output.append(getStackIDName(Description->Stack));
-    }
-    if (Fixed && Description->Kind != StackObjectKind::FixedSpillSlot) {
-      if (Options.Mode == MIPrintMode::Complete || Description->IsImmutable)
-        Output.append(Description->IsImmutable ? ", isImmutable: true" : ", isImmutable: false");
-      if (Options.Mode == MIPrintMode::Complete || Description->IsAliased)
-        Output.append(Description->IsAliased ? ", isAliased: true" : ", isAliased: false");
-    } else if (!Fixed && (Description->IsImmutable || Description->IsAliased)) {
-      return makeUnexpected(ErrorCode::Unsupported,
-                            "ordinary stack object immutable/aliased state is not serialized");
-    }
-    if (Description->CalleeSavedRegister) {
-      auto Name = physicalRegister(*Description->CalleeSavedRegister);
-      if (!Name)
-        return std::unexpected(Name.error());
-      Output.append(", callee-saved-register: ");
-      Output.append(yamlScalar(*Name));
-    }
-    if (Options.Mode == MIPrintMode::Complete || !Description->CalleeSavedRestored) {
-      Output.append(Description->CalleeSavedRestored ? ", callee-saved-restored: true"
-                                                     : ", callee-saved-restored: false");
-    }
-    if (!Fixed && Description->LocalOffset) {
-      Output.append(", local-offset: ");
-      Output.append(std::to_string(*Description->LocalOffset));
-    }
-    if (Description->DebugInfo) {
-      const MachineVariableDebugInfo &Debug = *Description->DebugInfo;
-      if (Debug.Variable) {
-        auto Value = metadataReference(*Debug.Variable, Context);
-        if (!Value)
-          return std::unexpected(Value.error());
-        Output.append(", debug-info-variable: ");
-        Output.append(yamlScalar(*Value));
-      }
-      if (Debug.Expression) {
-        auto Value = metadataValue(*Debug.Expression, Context);
-        if (!Value)
-          return std::unexpected(Value.error());
-        Output.append(", debug-info-expression: ");
-        Output.append(yamlScalar(*Value));
-      }
-      if (Debug.Location) {
-        auto Value = debugLocation(*Debug.Location, Context);
-        if (!Value)
-          return std::unexpected(Value.error());
-        Output.append(", debug-info-location: ");
-        Output.append(yamlScalar(*Value));
-      }
-    }
-    Output.append(" }\n");
-  }
-  return {};
-}
-
-Expected<void> MIRDocumentPrinter::printConstants(const MachineFunction &Function,
-                                                  const MIParserContext &Context) {
-  if (Context.ConstantPoolItems.empty()) {
-    if (Options.Mode == MIPrintMode::Complete)
-      Output.append("constants: []\n");
-    return {};
-  }
-  Output.append("constants:\n");
-  for (const MIConstantPoolSlot &Slot : Context.ConstantPoolItems) {
-    const MachineConstantPoolEntry *Entry = Function.constantPool().entry(Slot.Index);
-    const MachineConstantPoolEntryDesc *Description =
-        Entry == nullptr ? nullptr : Entry->description();
-    if (Description == nullptr)
-      return makeUnexpected(ErrorCode::VerificationError, "constant-pool slot is a tombstone");
-    if (Description->Merge != ConstantPoolMergeKind::Never ||
-        Description->Relocation != ConstantPoolRelocationMode::None ||
-        Description->Placement != ConstantPoolPlacement{}) {
-      return makeUnexpected(ErrorCode::Unsupported,
-                            "constant-pool placement state is not represented by fixed LLVM MIR");
-    }
-
-    bool IsTargetSpecific = false;
-    Expected<std::string> Value =
-        makeUnexpected(ErrorCode::Unsupported, "constant-pool kind is not MIR serializable");
-    if (const auto *Generic = std::get_if<GenericConstantData>(&Description->Value)) {
-      Value = printLLVMConstant(*Generic);
-    } else if (const auto *TargetConstantValue = std::get_if<TargetConstant>(&Description->Value)) {
-      IsTargetSpecific = true;
-      Value = Target.mirText().printTargetConstant(*TargetConstantValue);
-    }
-    if (!Value)
-      return std::unexpected(Value.error());
-
-    Output.append("  - id: ");
-    Output.append(std::to_string(Slot.TextID));
-    Output.append("\n    value: ");
-    Output.append(yamlScalar(*Value));
-    Output.append("\n    alignment: ");
-    Output.append(std::to_string(Description->Align.bytes()));
-    Output.push_back('\n');
-    if (IsTargetSpecific)
-      Output.append("    isTargetSpecific: true\n");
-  }
-  return {};
-}
-
-Expected<void> MIRDocumentPrinter::printJumpTable(const MachineFunction &Function,
-                                                  const MIParserContext &Context) {
-  if (Context.JumpTables.empty())
-    return {};
-  const MachineJumpTableEntry *FirstEntry =
-      Function.jumpTableInfo().table(Context.JumpTables.front().Index);
-  const MachineJumpTableDesc *First = FirstEntry == nullptr ? nullptr : FirstEntry->description();
-  if (First == nullptr)
-    return makeUnexpected(ErrorCode::VerificationError, "jump-table slot is not defined");
-
-  std::string_view Kind;
-  std::uint8_t ExpectedSize = 8;
-  switch (First->Encoding) {
-  case JumpTableEntryEncoding::BlockAddress:
-    Kind = "block-address";
-    break;
-  case JumpTableEntryEncoding::GPRelative64BlockAddress:
-    Kind = "gp-rel64-block-address";
-    break;
-  case JumpTableEntryEncoding::GPRelative32BlockAddress:
-    Kind = "gp-rel32-block-address";
-    ExpectedSize = 4;
-    break;
-  case JumpTableEntryEncoding::LabelDifference32:
-    Kind = "label-difference32";
-    ExpectedSize = 4;
-    break;
-  case JumpTableEntryEncoding::LabelDifference64:
-    Kind = "label-difference64";
-    break;
-  case JumpTableEntryEncoding::Inline:
-    Kind = "inline";
-    ExpectedSize = 4;
-    break;
-  case JumpTableEntryEncoding::Custom32:
-    Kind = "custom32";
-    ExpectedSize = 4;
-    break;
-  case JumpTableEntryEncoding::Target:
-  case JumpTableEntryEncoding::Count:
-    return makeUnexpected(ErrorCode::Unsupported,
-                          "target jump-table encoding has no fixed LLVM MIR spelling");
-  }
-
-  Output.append("jumpTable:\n  kind: ");
-  Output.append(Kind);
-  Output.append("\n  entries:\n");
-  for (const MIJumpTableSlot &Slot : Context.JumpTables) {
-    const MachineJumpTableEntry *Entry = Function.jumpTableInfo().table(Slot.Index);
-    const MachineJumpTableDesc *Description = Entry == nullptr ? nullptr : Entry->description();
-    if (Description == nullptr)
-      return makeUnexpected(ErrorCode::VerificationError, "jump-table slot is not defined");
-    if (Description->Encoding != First->Encoding || Description->EntrySize != ExpectedSize ||
-        Description->Align.bytes() != ExpectedSize ||
-        Description->Placement != JumpTablePlacement{} || Description->TargetEncoding != 0) {
-      return makeUnexpected(ErrorCode::Unsupported,
-                            "jump-table entries cannot share one fixed LLVM MIR kind");
-    }
-    Output.append("    - { id: ");
-    Output.append(std::to_string(Slot.TextID));
-    Output.append(", blocks: [ ");
-    for (std::size_t Index = 0; Index < Description->Targets.size(); ++Index) {
-      if (Index != 0)
-        Output.append(", ");
-      if (Description->Targets[Index] == nullptr)
-        return makeUnexpected(ErrorCode::VerificationError,
-                              "jump-table entry contains a null block");
-      auto Block = blockReference(Function, Description->Targets[Index]->stableID());
-      if (!Block)
-        return std::unexpected(Block.error());
-      Output.append(yamlScalar(*Block));
-    }
-    Output.append(" ] }\n");
-  }
-  return {};
-}
-
-Expected<void> MIRDocumentPrinter::printMetadata(const MachineFunction &Function,
-                                                 const MIParserContext &Context) {
-  if (Function.metadata().nodes().empty())
-    return {};
-  Output.append("machineMetadataNodes:\n");
-  for (const MachineMetadataNode &Node : Function.metadata().nodes()) {
-    auto NodeReference =
-        metadataReference(MachineMetadataReference::machineFunction(Node.Slot), Context);
-    if (!NodeReference)
-      return std::unexpected(NodeReference.error());
-    std::string Text = *NodeReference + " = ";
-    if (Node.IsDistinct)
-      Text.append("distinct ");
-    Text.append("!{");
-    for (std::size_t Index = 0; Index < Node.Elements.size(); ++Index) {
-      if (Index != 0)
-        Text.append(", ");
-      const MachineMetadataElement &Element = Node.Elements[Index];
-      if (Element.isNull()) {
-        Text.append("null");
-      } else if (const MachineMetadataReference *Reference = Element.reference()) {
-        auto Printed = metadataReference(*Reference, Context);
-        if (!Printed)
-          return std::unexpected(Printed.error());
-        Text.append(*Printed);
-      } else if (const std::string *String = Element.string()) {
-        Text.append("!\"");
-        for (const char Character : *String) {
-          if (Character == '\\' || Character == '"')
-            Text.push_back('\\');
-          Text.push_back(Character);
-        }
-        Text.push_back('"');
-      } else {
-        return makeUnexpected(ErrorCode::VerificationError,
-                              "machine metadata tuple contains an invalid element");
-      }
-    }
-    Text.push_back('}');
-    Output.append("  - ");
-    Output.append(yamlScalar(Text));
-    Output.push_back('\n');
-  }
-  return {};
-}
-
-Expected<void> MIRDocumentPrinter::printTargetState(const MachineFunction &Function) {
-  if (!Function.targetState().hasValue())
-    return {};
-  auto Node = Target.mirText().printFunctionState(Function.targetState());
-  if (!Node)
-    return std::unexpected(Node.error());
-  auto Text = targetNode(*Node);
-  if (!Text)
-    return std::unexpected(Text.error());
-  Output.append("machineFunctionInfo: ");
-  Output.append(*Text);
-  Output.push_back('\n');
-  return {};
-}
-
-Expected<void> MIRDocumentPrinter::printFunctionRecords(const MachineFunction &Function,
-                                                        const MIParserContext &Context) {
-  const MachineFunctionRecords &Records = Function.records();
-  if (!Records.entryValues().empty()) {
-    Output.append("entry_values:\n");
-    for (const MachineEntryValueInfo &Entry : Records.entryValues()) {
-      auto RegisterName = physicalRegister(Entry.Reg);
-      if (!RegisterName)
-        return std::unexpected(RegisterName.error());
-      if (!Entry.DebugInfo.Variable || !Entry.DebugInfo.Expression || !Entry.DebugInfo.Location) {
-        return makeUnexpected(ErrorCode::Unsupported,
-                              "MIR entry value requires complete debug metadata");
-      }
-      auto Variable = metadataReference(*Entry.DebugInfo.Variable, Context);
-      auto Expression = metadataValue(*Entry.DebugInfo.Expression, Context);
-      auto Location = debugLocation(*Entry.DebugInfo.Location, Context);
-      if (!Variable)
-        return std::unexpected(Variable.error());
-      if (!Expression)
-        return std::unexpected(Expression.error());
-      if (!Location)
-        return std::unexpected(Location.error());
-      Output.append("  - { entry-value-register: ");
-      Output.append(yamlScalar(*RegisterName));
-      Output.append(", debug-info-variable: ");
-      Output.append(yamlScalar(*Variable));
-      Output.append(", debug-info-expression: ");
-      Output.append(yamlScalar(*Expression));
-      Output.append(", debug-info-location: ");
-      Output.append(yamlScalar(*Location));
-      Output.append(" }\n");
-    }
-  } else if (Options.Mode == MIPrintMode::Complete) {
-    Output.append("entry_values: []\n");
-  }
-
-  if (!Records.callSites().empty()) {
-    Output.append("callSites:\n");
-    for (const MachineCallSiteInfo &CallSite : Records.callSites()) {
-      auto Location = instructionLocation(Function, CallSite.CallInstruction);
-      if (!Location)
-        return std::unexpected(Location.error());
-      Output.append("  - { bb: ");
-      Output.append(std::to_string(Location->Block));
-      Output.append(", offset: ");
-      Output.append(std::to_string(Location->Offset));
-      if (!CallSite.ForwardedArguments.empty()) {
-        Output.append(", fwdArgRegs: [ ");
-        for (std::size_t Index = 0; Index < CallSite.ForwardedArguments.size(); ++Index) {
-          if (Index != 0)
-            Output.append(", ");
-          const MachineCallSiteArgument &Argument = CallSite.ForwardedArguments[Index];
-          auto RegisterName = physicalRegister(Argument.Reg);
-          if (!RegisterName)
-            return std::unexpected(RegisterName.error());
-          Output.append("{ arg: ");
-          Output.append(std::to_string(Argument.ArgumentNumber));
-          Output.append(", reg: ");
-          Output.append(yamlScalar(*RegisterName));
-          Output.append(" }");
-        }
-        Output.append(" ]");
-      }
-      if (!CallSite.CalleeTypeIDs.empty()) {
-        Output.append(", calleeTypeIds: [ ");
-        for (std::size_t Index = 0; Index < CallSite.CalleeTypeIDs.size(); ++Index) {
-          if (Index != 0)
-            Output.append(", ");
-          Output.append(std::to_string(CallSite.CalleeTypeIDs[Index]));
-        }
-        Output.append(" ]");
-      }
-      Output.append(" }\n");
-    }
-  } else if (Options.Mode == MIPrintMode::Complete) {
-    Output.append("callSites: []\n");
-  }
-
-  if (!Records.debugValueSubstitutions().empty()) {
-    Output.append("debugValueSubstitutions:\n");
-    for (const MachineDebugValueSubstitution &Substitution : Records.debugValueSubstitutions()) {
-      Output.append("  - { srcinst: ");
-      Output.append(std::to_string(Substitution.Source.InstructionNumber));
-      Output.append(", srcop: ");
-      Output.append(std::to_string(Substitution.Source.OperandNumber));
-      Output.append(", dstinst: ");
-      Output.append(std::to_string(Substitution.Destination.InstructionNumber));
-      Output.append(", dstop: ");
-      Output.append(std::to_string(Substitution.Destination.OperandNumber));
-      Output.append(", subreg: ");
-      Output.append(std::to_string(Substitution.Subregister.value()));
-      Output.append(" }\n");
-    }
-  } else if (Options.Mode == MIPrintMode::Complete) {
-    Output.append("debugValueSubstitutions: []\n");
-  }
-
-  if (!Records.calledGlobals().empty()) {
-    Output.append("calledGlobals:\n");
-    for (const MachineCalledGlobal &Called : Records.calledGlobals()) {
-      auto Location = instructionLocation(Function, Called.CallInstruction);
-      if (!Location)
-        return std::unexpected(Location.error());
-      Output.append("  - { bb: ");
-      Output.append(std::to_string(Location->Block));
-      Output.append(", offset: ");
-      Output.append(std::to_string(Location->Offset));
-      Output.append(", callee: ");
-      Output.append(yamlScalar(Called.Callee));
-      Output.append(", flags: ");
-      Output.append(std::to_string(Called.Flags));
-      Output.append(" }\n");
-    }
-  }
-
-  if (!Records.prefetchTargets().empty()) {
-    Output.append("prefetch-targets: [ ");
-    const auto Targets = Records.prefetchTargets();
-    for (std::size_t Index = 0; Index < Targets.size(); ++Index) {
-      if (Index != 0)
-        Output.append(", ");
-      const MachinePrefetchTarget &TargetValue = Targets[Index];
-      std::string Text = "bb_id " + std::to_string(TargetValue.Block.BaseID) + ", " +
-                         std::to_string(TargetValue.Block.CloneID) + ", " +
-                         std::to_string(TargetValue.CallsiteIndex);
-      Output.append(yamlScalar(Text));
-    }
-    Output.append(" ]\n");
-  }
-  return {};
-}
-
-Expected<void> MIRDocumentPrinter::printFunction(const MachineFunction &Function,
-                                                 const MIRFunctionDocumentInfo *) {
-  if (Function.compilationStatus().state() != MachineCompilationState::Success) {
-    return makeUnexpected(ErrorCode::Unsupported,
-                          "fixed LLVM MIR cannot serialize this compilation failure state");
-  }
-  auto Context = createBodyContext(Function);
-  if (!Context)
-    return std::unexpected(Context.error());
-
-  Output.append("---\nname: ");
-  Output.append(yamlScalar(Function.name()));
-  Output.push_back('\n');
-  const auto Alignment = Function.attributes().alignment();
-  if (Options.Mode == MIPrintMode::Complete || Alignment) {
-    Output.append("alignment: ");
-    Output.append(std::to_string(Alignment ? Alignment->bytes() : 1U));
-    Output.push_back('\n');
-  }
-
-  const MachineFunctionProperties &Properties = Function.properties();
-  const MachineFunctionAttributes &Attributes = Function.attributes();
-  printBoolean("exposesReturnsTwice",
-               Attributes.has(MachineFunctionAttribute::ExposesReturnsTwice));
-  printBoolean("legalized", Properties.has(MachineFunctionProperty::Legalized));
-  printBoolean("regBankSelected", Properties.has(MachineFunctionProperty::RegBankSelected));
-  printBoolean("selected", Properties.has(MachineFunctionProperty::Selected));
-  printBoolean("failedISel", Properties.has(MachineFunctionProperty::FailedISel));
-  printBoolean("tracksRegLiveness", Properties.has(MachineFunctionProperty::TracksLiveness));
-  printBoolean("hasWinCFI", Attributes.has(MachineFunctionAttribute::HasWinCFI));
-  printBoolean("noPhis", Properties.has(MachineFunctionProperty::NoPHIs), true);
-  printBoolean("isSSA", Properties.has(MachineFunctionProperty::IsSSA), true);
-  printBoolean("noVRegs", Properties.has(MachineFunctionProperty::NoVRegs), true);
-  printBoolean("hasFakeUses", Attributes.has(MachineFunctionAttribute::HasFakeUses), true);
-  printBoolean("callsEHReturn", Attributes.has(MachineFunctionAttribute::CallsEHReturn));
-  printBoolean("callsUnwindInit", Attributes.has(MachineFunctionAttribute::CallsUnwindInit));
-  printBoolean("hasEHContTarget", Attributes.has(MachineFunctionAttribute::HasEHContTarget));
-  printBoolean("hasEHScopes", Attributes.has(MachineFunctionAttribute::HasEHScopes));
-  printBoolean("hasEHFunclets", Attributes.has(MachineFunctionAttribute::HasEHFunclets));
-  printBoolean("isOutlined", Attributes.has(MachineFunctionAttribute::IsOutlined));
-  printBoolean("debugInstrRef", Attributes.has(MachineFunctionAttribute::DebugInstrRef));
-  printBoolean("failsVerification", Properties.has(MachineFunctionProperty::FailsVerification));
-  printBoolean("tracksDebugUserValues",
-               Attributes.has(MachineFunctionAttribute::TracksDebugUserValues));
-
-  if (auto Printed = printRegisters(Function, *Context); !Printed)
-    return Printed;
-  if (auto Printed = printFrameInfo(Function, *Context); !Printed)
-    return Printed;
-  if (auto Printed = printStackObjects(Function, *Context, true); !Printed)
-    return Printed;
-  if (auto Printed = printStackObjects(Function, *Context, false); !Printed)
-    return Printed;
-  if (auto Printed = printFunctionRecords(Function, *Context); !Printed)
-    return Printed;
-  if (auto Printed = printConstants(Function, *Context); !Printed)
-    return Printed;
-  if (auto Printed = printTargetState(Function); !Printed)
-    return Printed;
-  if (auto Printed = printJumpTable(Function, *Context); !Printed)
-    return Printed;
-  if (auto Printed = printMetadata(Function, *Context); !Printed)
-    return Printed;
-
-  auto Body =
-      printMachineFunctionBody(Function, Target, *Context, MIPrinterOptions{.Mode = Options.Mode});
-  if (!Body)
-    return std::unexpected(Body.error());
-  Output.append("body: |\n");
-  appendBlockScalar(Output, *Body, 2);
-  Output.append("...\n");
-  return {};
-}
-
-Expected<std::string> MIRDocumentPrinter::run() {
-  auto UnitVerification = Document.unit().verify();
-  if (!UnitVerification)
-    return std::unexpected(UnitVerification.error());
-  if (Document.unit().functionCount() == 0) {
-    return makeUnexpected(ErrorCode::InvalidArgument,
-                          "MIR document must contain at least one machine function");
-  }
-
-  for (const MIRFunctionDocumentInfo &Info : Document.functionDocumentInfo()) {
-    if (Document.unit().function(Info.Function) == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "MIR document info references an unknown machine function");
-    }
-  }
-
-  for (std::size_t Index = 0; Index < Document.unit().functionCount(); ++Index) {
-    const MachineFunction *Function = Document.unit().functionAt(Index);
-    if (Function == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "compilation unit contains a null machine function");
-    }
-    auto ReferenceVerification =
-        verifyMIRDocumentReferences(Document, *Function, Options.EmitEmbeddedIR);
-    if (!ReferenceVerification)
-      return std::unexpected(ReferenceVerification.error());
-    auto LayoutVerification = verifyOmittedEmbeddedIRLayout(*Function);
-    if (!LayoutVerification)
-      return std::unexpected(LayoutVerification.error());
-  }
-
-  if (Options.EmitEmbeddedIR && Document.embeddedIR() != nullptr) {
-    Output.append("--- |\n");
-    appendBlockScalar(Output, Document.embeddedIR()->source().text(), 2);
-    Output.append("...\n");
-  }
-  for (std::size_t Index = 0; Index < Document.unit().functionCount(); ++Index) {
-    const MachineFunction *Function = Document.unit().functionAt(Index);
-    if (Function == nullptr)
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "compilation unit contains a null machine function");
-    if (auto Printed = printFunction(*Function, documentInfo(*Function)); !Printed)
-      return std::unexpected(Printed.error());
-  }
-  return std::move(Output);
-}
-
-} // namespace
-
-Expected<std::string> printMIRDocument(const MIRDocument &Document, const TargetDescription &Target,
-                                       MIRDocumentPrinterOptions Options) {
-  return MIRDocumentPrinter(Document, Target, std::move(Options)).run();
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRDocumentReferenceValidation.cpp b/backend/lib/MIR/MIRDocumentReferenceValidation.cpp
deleted file mode 100644
index 69b0dd1..0000000
--- a/backend/lib/MIR/MIRDocumentReferenceValidation.cpp
+++ /dev/null
@@ -1,426 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRDocumentReferenceValidation.h"
-
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineConstantPool.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionRecords.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/MIR/MIRDocument.h"
-
-#include <algorithm>
-#include <array>
-#include <initializer_list>
-#include <optional>
-#include <ranges>
-#include <string>
-#include <string_view>
-#include <variant>
-
-namespace rcc::mir {
-
-Expected<void> verifyMIRDocumentReferences(const MIRDocument &Document,
-                                           const MachineFunction &Function, bool UseEmbeddedIR) {
-  const EmbeddedIRReferenceIndex *Embedded = UseEmbeddedIR ? Document.embeddedIR() : nullptr;
-  const EmbeddedIRFunction *IRFunction = nullptr;
-  if (Embedded != nullptr) {
-    if (Function.name().empty()) {
-      std::size_t AnonymousOrdinal = 0;
-      bool FoundFunction = false;
-      for (std::size_t Index = 0; Index < Document.unit().functionCount(); ++Index) {
-        const MachineFunction *Candidate = Document.unit().functionAt(Index);
-        if (Candidate == &Function) {
-          FoundFunction = true;
-          break;
-        }
-        if (Candidate != nullptr && Candidate->name().empty())
-          ++AnonymousOrdinal;
-      }
-      if (FoundFunction)
-        IRFunction = Embedded->unnamedFunction(AnonymousOrdinal);
-    } else {
-      IRFunction = Embedded->function(Function.name());
-    }
-    if (IRFunction == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "machine function has no matching embedded LLVM IR function");
-    }
-  }
-
-  const auto ValidateGlobal = [Embedded](std::string_view Name,
-                                         std::string_view Description) -> Expected<void> {
-    if (Embedded == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            std::string(Description) +
-                                " requires embedded LLVM IR to resolve global '" +
-                                std::string(Name) + "'");
-    }
-    if (Embedded->hasGlobalValue(Name))
-      return {};
-    return makeUnexpected(ErrorCode::VerificationError,
-                          std::string(Description) +
-                              " references an undefined embedded LLVM IR global '" +
-                              std::string(Name) + "'");
-  };
-  const auto ValidateBlockAddress = [Embedded](std::string_view FunctionName,
-                                               std::string_view BlockName,
-                                               std::string_view Description) -> Expected<void> {
-    if (Embedded == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            std::string(Description) +
-                                " requires embedded LLVM IR to resolve a block address");
-    }
-    const EmbeddedIRFunction *AddressFunction = Embedded->function(FunctionName);
-    if (AddressFunction == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            std::string(Description) +
-                                " references an undefined embedded LLVM IR function '" +
-                                std::string(FunctionName) + "'");
-    }
-    if (AddressFunction->block(BlockName) == nullptr) {
-      return makeUnexpected(
-          ErrorCode::VerificationError,
-          std::string(Description) + " references an undefined embedded LLVM IR block '" +
-              std::string(BlockName) + "' in function '" + std::string(FunctionName) + "'");
-    }
-    return {};
-  };
-  const auto ValidateIRValue = [IRFunction](std::string_view Name,
-                                            std::string_view Description) -> Expected<void> {
-    if (IRFunction == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            std::string(Description) +
-                                " requires embedded LLVM IR to resolve IR value '%" +
-                                std::string(Name) + "'");
-    }
-    if (IRFunction->value(Name) != nullptr)
-      return {};
-    return makeUnexpected(ErrorCode::VerificationError,
-                          std::string(Description) +
-                              " references an undefined embedded LLVM IR value '%" +
-                              std::string(Name) + "'");
-  };
-  const auto ValidateMetadata = [Embedded](MachineMetadataReference Reference,
-                                           std::initializer_list<std::string_view> ExpectedTypes,
-                                           std::string_view Description) -> Expected<void> {
-    if (!Reference.isValid()) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            std::string(Description) + " has an invalid metadata reference");
-    }
-    if (Reference.scope() != MachineMetadataScope::EmbeddedIR)
-      return {};
-    if (Embedded == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            std::string(Description) + " requires embedded LLVM IR metadata !" +
-                                std::to_string(Reference.slot()));
-    }
-    const EmbeddedIRMetadataDefinition *Definition =
-        Embedded->metadata(std::to_string(Reference.slot()));
-    if (Definition == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            std::string(Description) +
-                                " references undefined embedded LLVM IR metadata !" +
-                                std::to_string(Reference.slot()));
-    }
-    if (ExpectedTypes.size() == 0 ||
-        std::ranges::find(ExpectedTypes, Definition->DynamicType) != ExpectedTypes.end()) {
-      return {};
-    }
-    std::string Expected;
-    for (const std::string_view Type : ExpectedTypes) {
-      if (!Expected.empty())
-        Expected.append(" or ");
-      Expected.append(Type);
-    }
-    return makeUnexpected(ErrorCode::VerificationError,
-                          std::string(Description) + " requires " + Expected + " metadata, but !" +
-                              std::to_string(Reference.slot()) + " is " +
-                              (Definition->DynamicType.empty()
-                                   ? std::string("an unclassified metadata node")
-                                   : Definition->DynamicType));
-  };
-  const auto ValidateMetadataValue =
-      [&ValidateMetadata](const MachineMetadataValue &Value,
-                          std::string_view Description) -> Expected<void> {
-    const MachineMetadataReference *Reference = Value.reference();
-    return Reference == nullptr ? Expected<void>{} : ValidateMetadata(*Reference, {}, Description);
-  };
-  const auto ValidateLocation =
-      [&ValidateMetadata](const MachineDebugLocation &Location,
-                          std::string_view Description) -> Expected<void> {
-    if (const MachineMetadataReference *Reference = Location.reference())
-      return ValidateMetadata(*Reference, {"DILocation"}, Description);
-    const MachineDILocation *Inline = Location.inlineLocation();
-    if (Inline == nullptr)
-      return {};
-    for (const MachineDILocationFrame &Frame : Inline->inlineChain()) {
-      auto Verification =
-          ValidateMetadata(Frame.Scope, {"DISubprogram", "DILexicalBlock", "DILexicalBlockFile"},
-                           "inline DILocation scope");
-      if (!Verification)
-        return Verification;
-    }
-    if (Inline->terminalInlinedAt()) {
-      return ValidateMetadata(*Inline->terminalInlinedAt(), {"DILocation"},
-                              "inline DILocation inlinedAt");
-    }
-    return {};
-  };
-  const auto ValidateVariableDebugInfo =
-      [&ValidateMetadata, &ValidateMetadataValue,
-       &ValidateLocation](const MachineVariableDebugInfo &DebugInfo) -> Expected<void> {
-    if (DebugInfo.Variable) {
-      auto Verification =
-          ValidateMetadata(*DebugInfo.Variable, {"DILocalVariable"}, "debug variable");
-      if (!Verification)
-        return Verification;
-    }
-    if (DebugInfo.Expression) {
-      if (const MachineMetadataReference *Reference = DebugInfo.Expression->reference();
-          Reference != nullptr) {
-        auto Verification = ValidateMetadata(*Reference, {"DIExpression"}, "debug expression");
-        if (!Verification)
-          return Verification;
-      }
-      auto Verification = ValidateMetadataValue(*DebugInfo.Expression, "debug expression");
-      if (!Verification)
-        return Verification;
-    }
-    if (DebugInfo.Location)
-      return ValidateLocation(*DebugInfo.Location, "debug location");
-    return {};
-  };
-  const auto ValidateGenericType = [Embedded](const auto &Self,
-                                              const GenericConstantType &Type) -> Expected<void> {
-    if (Type.Kind == GenericConstantTypeKind::Named) {
-      if (Embedded == nullptr) {
-        return makeUnexpected(
-            ErrorCode::VerificationError,
-            "generic constant type requires embedded LLVM IR to resolve named type '%" + Type.Name +
-                "'");
-      }
-      if (Embedded->typeDefinition(Type.Name) == nullptr) {
-        return makeUnexpected(
-            ErrorCode::VerificationError,
-            "generic constant type references an undefined embedded LLVM IR named type '%" +
-                Type.Name + "'");
-      }
-    }
-    for (const GenericConstantType &Element : Type.Elements) {
-      auto Verification = Self(Self, Element);
-      if (!Verification)
-        return Verification;
-    }
-    return {};
-  };
-  const auto ValidateGenericConstant =
-      [&ValidateBlockAddress, &ValidateGenericType,
-       &ValidateGlobal](const auto &Self, const GenericConstantData &Constant) -> Expected<void> {
-    auto TypeVerification = ValidateGenericType(ValidateGenericType, Constant.Type);
-    if (!TypeVerification)
-      return TypeVerification;
-    if (Constant.SourceElementType) {
-      TypeVerification = ValidateGenericType(ValidateGenericType, *Constant.SourceElementType);
-      if (!TypeVerification)
-        return TypeVerification;
-    }
-    switch (Constant.Kind) {
-    case GenericConstantKind::GlobalAddress:
-    case GenericConstantKind::DSOLocalEquivalent:
-    case GenericConstantKind::NoCFI:
-      if (auto Verification = ValidateGlobal(Constant.Symbol, "generic constant"); !Verification)
-        return Verification;
-      break;
-    case GenericConstantKind::BlockAddress:
-      if (auto Verification = ValidateBlockAddress(Constant.Symbol, Constant.Block,
-                                                   "generic constant blockaddress");
-          !Verification) {
-        return Verification;
-      }
-      break;
-    default:
-      break;
-    }
-    for (const GenericConstantData &Element : Constant.Elements) {
-      auto Verification = Self(Self, Element);
-      if (!Verification)
-        return Verification;
-    }
-    return {};
-  };
-
-  for (const MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr;
-       Block = Block->next()) {
-    if (const auto Name = Block->attributes().irBlockName(); Name) {
-      if (IRFunction == nullptr) {
-        return makeUnexpected(ErrorCode::VerificationError,
-                              "machine basic block requires embedded LLVM IR to resolve block '" +
-                                  std::string(*Name) + "'");
-      }
-      if (IRFunction->block(*Name) == nullptr) {
-        return makeUnexpected(
-            ErrorCode::VerificationError,
-            "machine basic block references an undefined embedded LLVM IR block '" +
-                std::string(*Name) + "'");
-      }
-    }
-  }
-  for (const StackObject &Object : Function.frameInfo().objects()) {
-    const StackObjectDesc *Description = Object.description();
-    if (Description == nullptr || !Description->AllocaName)
-      continue;
-    if (IRFunction == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "stack object requires embedded LLVM IR to resolve alloca '" +
-                                *Description->AllocaName + "'");
-    }
-    if (IRFunction->alloca(*Description->AllocaName) == nullptr) {
-      return makeUnexpected(ErrorCode::VerificationError,
-                            "stack object references an undefined embedded LLVM IR alloca '" +
-                                *Description->AllocaName + "'");
-    }
-  }
-
-  for (const MachineConstantPoolEntry &Entry : Function.constantPool().entries()) {
-    const MachineConstantPoolEntryDesc *Description = Entry.description();
-    if (Description == nullptr)
-      continue;
-    if (const auto *Generic = std::get_if<GenericConstantData>(&Description->Value)) {
-      auto Verification = ValidateGenericConstant(ValidateGenericConstant, *Generic);
-      if (!Verification)
-        return Verification;
-    } else if (const auto *Address = std::get_if<BlockAddressConstant>(&Description->Value)) {
-      auto Verification = ValidateBlockAddress(Address->FunctionName, Address->BlockName,
-                                               "constant-pool block address");
-      if (!Verification)
-        return Verification;
-    }
-  }
-
-  for (const MachineMetadataNode &Node : Function.metadata().nodes()) {
-    for (const MachineMetadataElement &Element : Node.Elements) {
-      const MachineMetadataReference *Reference = Element.reference();
-      if (Reference == nullptr)
-        continue;
-      auto Verification = ValidateMetadata(*Reference, {}, "machine metadata node");
-      if (!Verification)
-        return Verification;
-    }
-  }
-
-  for (const StackObject &Object : Function.frameInfo().objects()) {
-    const StackObjectDesc *Description = Object.description();
-    if (Description == nullptr || !Description->DebugInfo)
-      continue;
-    auto Verification = ValidateVariableDebugInfo(*Description->DebugInfo);
-    if (!Verification)
-      return Verification;
-  }
-  for (const MachineEntryValueInfo &Entry : Function.records().entryValues()) {
-    auto Verification = ValidateVariableDebugInfo(Entry.DebugInfo);
-    if (!Verification)
-      return Verification;
-  }
-  for (const MachineCalledGlobal &Called : Function.records().calledGlobals()) {
-    auto Verification = ValidateGlobal(Called.Callee, "called-global record");
-    if (!Verification)
-      return Verification;
-  }
-
-  for (const MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr;
-       Block = Block->next()) {
-    for (const MachineInstr *Instruction = Block->firstInstruction(); Instruction != nullptr;
-         Instruction = Instruction->next()) {
-      if (Instruction->debugLocation()) {
-        auto Verification =
-            ValidateLocation(*Instruction->debugLocation(), "instruction debug location");
-        if (!Verification)
-          return Verification;
-      }
-      const std::array InstructionMetadata{
-          Instruction->heapAllocMarker(),
-          Instruction->pcSections(),
-          Instruction->mmra(),
-      };
-      for (const auto &Reference : InstructionMetadata) {
-        if (!Reference)
-          continue;
-        auto Verification = ValidateMetadata(*Reference, {}, "instruction metadata attachment");
-        if (!Verification)
-          return Verification;
-      }
-
-      for (const MachineOperand &Operand : Instruction->operands()) {
-        if (const auto *Global = Operand.getIf<GlobalSymbolOperand>(); Global != nullptr) {
-          auto Verification = ValidateGlobal(Global->Name, "global-symbol operand");
-          if (!Verification)
-            return Verification;
-        }
-        if (const auto *Address = Operand.getIf<BlockAddressOperand>(); Address != nullptr) {
-          auto Verification = ValidateBlockAddress(Address->FunctionName, Address->BlockName,
-                                                   "block-address operand");
-          if (!Verification)
-            return Verification;
-        }
-        if (const auto *Metadata = Operand.getIf<MetadataOperand>(); Metadata != nullptr) {
-          auto Verification = ValidateMetadataValue(Metadata->Value, "metadata operand");
-          if (!Verification)
-            return Verification;
-        }
-      }
-
-      for (const MachineMemOperand *Memory : Instruction->memOperands()) {
-        const MachineMemOperandDesc &Description = Memory->description();
-        const std::optional<std::string_view> BaseName = Description.Base.symbolName();
-        switch (Description.Base.kind()) {
-        case MemoryBase::Kind::GlobalSymbol:
-        case MemoryBase::Kind::CallEntryGlobal:
-          if (BaseName) {
-            auto Verification = ValidateGlobal(*BaseName, "machine memory base");
-            if (!Verification)
-              return Verification;
-          }
-          break;
-        case MemoryBase::Kind::IRValue:
-          if (BaseName) {
-            auto Verification = ValidateIRValue(*BaseName, "machine memory base");
-            if (!Verification)
-              return Verification;
-          }
-          break;
-        default:
-          break;
-        }
-        const std::array MetadataReferences{
-            Description.TBAA,          Description.AliasScope,
-            Description.NoAlias,       Description.NoAliasAddressSpace,
-            Description.RangeMetadata,
-        };
-        for (const auto &Reference : MetadataReferences) {
-          if (!Reference)
-            continue;
-          auto Verification = ValidateMetadata(*Reference, {}, "machine memory operand metadata");
-          if (!Verification)
-            return Verification;
-        }
-        if (Description.SyncScope.value() == 0)
-          continue;
-        const auto Scope =
-            std::ranges::find_if(Document.syncScopes(), [&Description](const auto &Slot) {
-              return Slot.ID == Description.SyncScope;
-            });
-        if (Scope == Document.syncScopes().end()) {
-          return makeUnexpected(
-              ErrorCode::VerificationError,
-              "machine memory operand synchronization scope has no document name");
-        }
-      }
-    }
-  }
-  return {};
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRDocumentReferenceValidation.h b/backend/lib/MIR/MIRDocumentReferenceValidation.h
deleted file mode 100644
index 2ab6291..0000000
--- a/backend/lib/MIR/MIRDocumentReferenceValidation.h
+++ /dev/null
@@ -1,25 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-// The private header has no stable include-root-relative guard name.
-// NOLINTNEXTLINE(llvm-header-guard)
-#ifndef RCC_LIB_MIR_MIRDOCUMENTREFERENCEVALIDATION_H
-#define RCC_LIB_MIR_MIRDOCUMENTREFERENCEVALIDATION_H
-
-#include "rcc/Support/Error.h"
-
-namespace rcc {
-
-class MachineFunction;
-
-namespace mir {
-
-class MIRDocument;
-
-[[nodiscard]] Expected<void> verifyMIRDocumentReferences(const MIRDocument &Document,
-                                                         const MachineFunction &Function,
-                                                         bool UseEmbeddedIR);
-
-} // namespace mir
-} // namespace rcc
-
-#endif // RCC_LIB_MIR_MIRDOCUMENTREFERENCEVALIDATION_H
diff --git a/backend/lib/MIR/MIRFrameParser.cpp b/backend/lib/MIR/MIRFrameParser.cpp
deleted file mode 100644
index 4367fbd..0000000
--- a/backend/lib/MIR/MIRFrameParser.cpp
+++ /dev/null
@@ -1,467 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRDocumentParser.h"
-#include "MIRDocumentReferenceValidation.h"
-#include "MIRMetadataTextParser.h"
-#include "MIRParserUtilities.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineConstantPool.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionAttributes.h"
-#include "rcc/CodeGen/MachineFunctionProperties.h"
-#include "rcc/CodeGen/MachineFunctionRecords.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineJumpTableInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/MachineVerifier.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-
-#include <algorithm>
-#include <array>
-#include <cstddef>
-#include <cstdint>
-#include <initializer_list>
-#include <limits>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <unordered_map>
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-
-using parser_detail::parseBool;
-using parser_detail::parsePrefixedID;
-using parser_detail::parseSigned;
-using parser_detail::parseUnsigned;
-using parser_detail::parseUnsigned32;
-using parser_detail::trim;
-
-bool MIRDocumentParser::parseStackObjects(const yaml::Node &Root, MachineFunction &Function,
-                                          MIParserContext &Context) {
-  auto ParseList = [this, &Function, &Context](const yaml::Node &List, bool Fixed) -> bool {
-    if (requireKind(List, yaml::NodeKind::Sequence,
-                    Fixed ? "fixed stack objects" : "stack objects")) {
-      return true;
-    }
-    constexpr std::array FixedKeys{
-        std::string_view{"id"},
-        std::string_view{"type"},
-        std::string_view{"offset"},
-        std::string_view{"size"},
-        std::string_view{"alignment"},
-        std::string_view{"stack-id"},
-        std::string_view{"isImmutable"},
-        std::string_view{"isAliased"},
-        std::string_view{"callee-saved-register"},
-        std::string_view{"callee-saved-restored"},
-        std::string_view{"debug-info-variable"},
-        std::string_view{"debug-info-expression"},
-        std::string_view{"debug-info-location"},
-    };
-    constexpr std::array StackKeys{
-        std::string_view{"id"},
-        std::string_view{"name"},
-        std::string_view{"type"},
-        std::string_view{"offset"},
-        std::string_view{"size"},
-        std::string_view{"alignment"},
-        std::string_view{"stack-id"},
-        std::string_view{"callee-saved-register"},
-        std::string_view{"callee-saved-restored"},
-        std::string_view{"local-offset"},
-        std::string_view{"debug-info-variable"},
-        std::string_view{"debug-info-expression"},
-        std::string_view{"debug-info-location"},
-    };
-    std::unordered_set<std::uint32_t> IDs;
-    for (const yaml::NodeID ElementID : List.sequence()) {
-      const yaml::Node *Element = node(ElementID);
-      if (Element == nullptr || requireKind(*Element, yaml::NodeKind::Mapping, "stack object") ||
-          (Fixed ? validateKeys(*Element, FixedKeys, "fixed stack object")
-                 : validateKeys(*Element, StackKeys, "stack object"))) {
-        return true;
-      }
-      const yaml::Node *IDNode = mappingValue(*Element, "id");
-      if (IDNode == nullptr)
-        return fail(Element->range(), "stack object requires 'id'");
-      std::uint64_t WideID = 0;
-      if (unsignedValue(*IDNode, WideID, "a 32-bit stack object ID") ||
-          WideID > std::numeric_limits<std::uint32_t>::max()) {
-        return true;
-      }
-      const auto TextID = static_cast<std::uint32_t>(WideID);
-      if (!IDs.insert(TextID).second)
-        return fail(IDNode->range(), "duplicate stack object ID");
-
-      StackObjectDesc Description;
-      Description.Kind = Fixed ? StackObjectKind::FixedABI : StackObjectKind::Default;
-      Description.Offset = 0;
-      if (const yaml::Node *NameNode = mappingValue(*Element, "name")) {
-        std::string_view Name;
-        if (scalar(*NameNode, Name, "stack object name"))
-          return true;
-        if (!Name.empty())
-          Description.AllocaName = std::string(Name);
-      }
-      if (const yaml::Node *TypeNode = mappingValue(*Element, "type")) {
-        std::string_view Type;
-        if (scalar(*TypeNode, Type, "stack object type"))
-          return true;
-        if (Type == "default")
-          Description.Kind = Fixed ? StackObjectKind::FixedABI : StackObjectKind::Default;
-        else if (Type == "spill-slot")
-          Description.Kind = Fixed ? StackObjectKind::FixedSpillSlot : StackObjectKind::SpillSlot;
-        else if (!Fixed && Type == "variable-sized")
-          Description.Kind = StackObjectKind::VariableSized;
-        else
-          return fail(TypeNode->range(), "unknown stack object type '" + std::string(Type) + "'");
-      }
-      if (const yaml::Node *OffsetNode = mappingValue(*Element, "offset")) {
-        std::int64_t Offset = 0;
-        if (signedValue(*OffsetNode, Offset, "a signed stack object offset"))
-          return true;
-        Description.Offset = Offset;
-      } else if (Fixed) {
-        Description.Offset = 0;
-      }
-      if (Description.Kind != StackObjectKind::VariableSized) {
-        const yaml::Node *SizeNode = mappingValue(*Element, "size");
-        if (SizeNode == nullptr) {
-          if (!Fixed)
-            return fail(Element->range(), "fixed-size stack object requires 'size'");
-          Description.Size = 0;
-        } else {
-          std::uint64_t Size = 0;
-          if (unsignedValue(*SizeNode, Size, "an unsigned stack object size"))
-            return true;
-          Description.Size = Size;
-        }
-      }
-      if (const yaml::Node *AlignmentNode = mappingValue(*Element, "alignment")) {
-        if (alignment(*AlignmentNode, Description.Align, true))
-          return true;
-      }
-      if (const yaml::Node *StackIDNode = mappingValue(*Element, "stack-id")) {
-        std::string_view Name;
-        if (scalar(*StackIDNode, Name, "stack ID"))
-          return true;
-        const auto Stack = parseStackIDName(Name);
-        if (!Stack)
-          return fail(StackIDNode->range(), "unknown stack ID '" + std::string(Name) + "'");
-        Description.Stack = *Stack;
-      }
-      if (const yaml::Node *ImmutableNode = mappingValue(*Element, "isImmutable")) {
-        if (boolean(*ImmutableNode, Description.IsImmutable))
-          return true;
-      }
-      if (const yaml::Node *AliasedNode = mappingValue(*Element, "isAliased")) {
-        if (boolean(*AliasedNode, Description.IsAliased))
-          return true;
-      }
-      if (const yaml::Node *SavedNode = mappingValue(*Element, "callee-saved-register")) {
-        std::string_view SavedName;
-        if (scalar(*SavedNode, SavedName, "physical register"))
-          return true;
-        if (!trim(SavedName).empty()) {
-          PhysicalRegister Reg;
-          if (physicalRegister(SavedName, SavedNode->range(), Reg))
-            return true;
-          Description.CalleeSavedRegister = Reg;
-        }
-      }
-      if (const yaml::Node *RestoredNode = mappingValue(*Element, "callee-saved-restored")) {
-        if (boolean(*RestoredNode, Description.CalleeSavedRestored))
-          return true;
-      }
-      if (const yaml::Node *LocalNode = mappingValue(*Element, "local-offset")) {
-        std::int64_t Offset = 0;
-        if (signedValue(*LocalNode, Offset, "a signed local frame offset"))
-          return true;
-        Description.LocalOffset = Offset;
-      }
-      MachineVariableDebugInfo DebugInfo;
-      if (parseVariableDebugInfo(*Element, Function, DebugInfo))
-        return true;
-      if (DebugInfo.Variable || DebugInfo.Expression || DebugInfo.Location)
-        Description.DebugInfo = std::move(DebugInfo);
-
-      auto Created = Function.frameInfo().createObject(std::move(Description));
-      if (!Created)
-        return importError(Element->range(), Created.error());
-      MIFrameObjectSlot Slot{
-          .TextID = TextID,
-          .Index = *Created,
-          .Name = std::nullopt,
-      };
-      if (const StackObjectDesc *CreatedDescription =
-              Function.frameInfo().object(*Created)->description();
-          CreatedDescription != nullptr && CreatedDescription->AllocaName) {
-        Slot.Name = *CreatedDescription->AllocaName;
-      }
-      (Fixed ? Context.FixedStackObjects : Context.StackObjects).push_back(std::move(Slot));
-    }
-    return false;
-  };
-
-  if (const yaml::Node *Fixed = mappingValue(Root, "fixedStack")) {
-    if (ParseList(*Fixed, true))
-      return true;
-  }
-  if (const yaml::Node *Stack = mappingValue(Root, "stack")) {
-    if (ParseList(*Stack, false))
-      return true;
-  }
-  return false;
-}
-
-bool MIRDocumentParser::parseFrameReference(const yaml::Node &Node, const MIParserContext &Context,
-                                            FrameIndex &Index) {
-  std::string_view Text;
-  if (scalar(Node, Text, "frame index"))
-    return true;
-  bool Fixed = false;
-  std::optional<std::uint32_t> ID = parsePrefixedID(Text, "%stack.");
-  if (!ID) {
-    ID = parsePrefixedID(Text, "%fixed-stack.");
-    Fixed = true;
-  }
-  if (!ID)
-    return fail(Node.range(), "frame index must use '%stack.N' or '%fixed-stack.N'");
-  const auto &Slots = Fixed ? Context.FixedStackObjects : Context.StackObjects;
-  const auto Found = std::ranges::find_if(
-      Slots, [ID](const MIFrameObjectSlot &Slot) { return Slot.TextID == *ID; });
-  if (Found == Slots.end())
-    return fail(Node.range(), "reference to undefined frame object");
-  Index = Found->Index;
-  return false;
-}
-
-MachineBasicBlock *MIRDocumentParser::blockAt(MachineFunction &Function,
-                                              std::uint32_t Number) const noexcept {
-  for (MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr; Block = Block->next()) {
-    if (Block->denseNumber() == Number)
-      return Block;
-  }
-  return nullptr;
-}
-
-MachineInstr *MIRDocumentParser::instructionAt(MachineFunction &Function, std::uint32_t BlockNumber,
-                                               std::uint32_t Offset) const noexcept {
-  MachineBasicBlock *Block = blockAt(Function, BlockNumber);
-  if (Block == nullptr)
-    return nullptr;
-  MachineInstr *Instruction = Block->firstInstruction();
-  for (std::uint32_t Index = 0; Instruction != nullptr && Index < Offset; ++Index)
-    Instruction = Instruction->next();
-  return Instruction;
-}
-
-bool MIRDocumentParser::parseBlockReference(std::string_view Text, const TextRange &Range,
-                                            MachineFunction &Function, MachineBasicBlock *&Block) {
-  const auto Number = parsePrefixedID(Text, "%bb.");
-  if (!Number)
-    return fail(Range, "basic block reference must use the '%bb.N' MIR spelling");
-  Block = blockAt(Function, *Number);
-  if (Block == nullptr)
-    return fail(Range, "reference to undefined machine basic block");
-  return false;
-}
-
-bool MIRDocumentParser::parseSaveRestorePoints(const yaml::Node &Node, MachineFunction &Function,
-                                               std::vector<MachineFrameSaveRestorePoint> &Points) {
-  if (requireKind(Node, yaml::NodeKind::Sequence, "frame save/restore points"))
-    return true;
-  constexpr std::array Keys{
-      std::string_view{"point"},
-      std::string_view{"registers"},
-  };
-  for (const yaml::NodeID PointID : Node.sequence()) {
-    const yaml::Node *PointNode = node(PointID);
-    if (PointNode == nullptr ||
-        requireKind(*PointNode, yaml::NodeKind::Mapping, "frame save/restore point") ||
-        validateKeys(*PointNode, Keys, "frame save/restore point")) {
-      return true;
-    }
-    const yaml::Node *BlockNode = mappingValue(*PointNode, "point");
-    if (BlockNode == nullptr)
-      return fail(PointNode->range(), "frame save/restore point requires 'point'");
-    std::string_view BlockText;
-    MachineBasicBlock *Block = nullptr;
-    if (scalar(*BlockNode, BlockText, "basic block reference") ||
-        parseBlockReference(BlockText, BlockNode->range(), Function, Block)) {
-      return true;
-    }
-    if (Block == nullptr)
-      return fail(BlockNode->range(), "reference to undefined machine basic block");
-    MachineFrameSaveRestorePoint Point{.Block = Block->stableID(), .Registers = {}};
-    if (const yaml::Node *RegistersNode = mappingValue(*PointNode, "registers")) {
-      if (requireKind(*RegistersNode, yaml::NodeKind::Sequence, "save/restore point registers")) {
-        return true;
-      }
-      for (const yaml::NodeID RegID : RegistersNode->sequence()) {
-        const yaml::Node *RegNode = node(RegID);
-        PhysicalRegister Reg;
-        if (RegNode == nullptr || physicalRegister(*RegNode, Reg))
-          return true;
-        Point.Registers.push_back(Reg);
-      }
-    }
-    Points.push_back(std::move(Point));
-  }
-  return false;
-}
-
-bool MIRDocumentParser::parseFrameState(const yaml::Node &Root, MachineFunction &Function,
-                                        const MIParserContext &Context) {
-  const yaml::Node *Frame = mappingValue(Root, "frameInfo");
-  if (Frame == nullptr)
-    return false;
-  if (requireKind(*Frame, yaml::NodeKind::Mapping, "frameInfo"))
-    return true;
-  constexpr std::array Keys{
-      std::string_view{"isFrameAddressTaken"},
-      std::string_view{"isReturnAddressTaken"},
-      std::string_view{"hasStackMap"},
-      std::string_view{"hasPatchPoint"},
-      std::string_view{"stackSize"},
-      std::string_view{"offsetAdjustment"},
-      std::string_view{"maxAlignment"},
-      std::string_view{"adjustsStack"},
-      std::string_view{"hasCalls"},
-      std::string_view{"framePointerPolicy"},
-      std::string_view{"stackProtector"},
-      std::string_view{"functionContext"},
-      std::string_view{"maxCallFrameSize"},
-      std::string_view{"cvBytesOfCalleeSavedRegisters"},
-      std::string_view{"hasOpaqueSPAdjustment"},
-      std::string_view{"hasVAStart"},
-      std::string_view{"hasMustTailInVarArgFunc"},
-      std::string_view{"hasTailCall"},
-      std::string_view{"isCalleeSavedInfoValid"},
-      std::string_view{"localFrameSize"},
-      std::string_view{"savePoint"},
-      std::string_view{"restorePoint"},
-  };
-  if (validateKeys(*Frame, Keys, "frameInfo"))
-    return true;
-
-  MachineFrameState State = Function.frameInfo().state();
-  const std::array BoolBindings{
-      std::pair{"isFrameAddressTaken", &State.IsFrameAddressTaken},
-      std::pair{"isReturnAddressTaken", &State.IsReturnAddressTaken},
-      std::pair{"hasStackMap", &State.HasStackMap},
-      std::pair{"hasPatchPoint", &State.HasPatchPoint},
-      std::pair{"adjustsStack", &State.AdjustsStack},
-      std::pair{"hasCalls", &State.HasCalls},
-      std::pair{"hasOpaqueSPAdjustment", &State.HasOpaqueSPAdjustment},
-      std::pair{"hasVAStart", &State.HasVAStart},
-      std::pair{"hasMustTailInVarArgFunc", &State.HasMustTailInVarArgFunc},
-      std::pair{"hasTailCall", &State.HasTailCall},
-      std::pair{"isCalleeSavedInfoValid", &State.IsCalleeSavedInfoValid},
-  };
-  for (const auto &[Key, Destination] : BoolBindings) {
-    if (const yaml::Node *Value = mappingValue(*Frame, Key)) {
-      if (boolean(*Value, *Destination))
-        return true;
-    }
-  }
-
-  if (const yaml::Node *Value = mappingValue(*Frame, "stackSize")) {
-    if (unsignedValue(*Value, State.StackSize, "an unsigned stack size"))
-      return true;
-  }
-  if (const yaml::Node *Value = mappingValue(*Frame, "offsetAdjustment")) {
-    std::int64_t Wide = 0;
-    if (signedValue(*Value, Wide, "a 32-bit signed offset adjustment") ||
-        Wide < std::numeric_limits<std::int32_t>::min() ||
-        Wide > std::numeric_limits<std::int32_t>::max()) {
-      return fail(Value->range(), "offset adjustment is outside the 32-bit signed range");
-    }
-    State.OffsetAdjustment = static_cast<std::int32_t>(Wide);
-  }
-  if (const yaml::Node *Value = mappingValue(*Frame, "maxAlignment")) {
-    std::uint64_t Bytes = 0;
-    if (unsignedValue(*Value, Bytes, "an unsigned maximum alignment"))
-      return true;
-    if (Bytes == 0) {
-      State.MaxAlignment.reset();
-    } else {
-      auto Parsed = Alignment::create(Bytes);
-      if (!Parsed)
-        return importError(Value->range(), Parsed.error());
-      State.MaxAlignment = *Parsed;
-    }
-  }
-  if (const yaml::Node *Value = mappingValue(*Frame, "framePointerPolicy")) {
-    std::string_view Name;
-    if (scalar(*Value, Name, "frame-pointer policy"))
-      return true;
-    const auto Policy = parseMachineFramePointerPolicy(Name);
-    if (!Policy)
-      return fail(Value->range(), "unknown frame-pointer policy '" + std::string(Name) + "'");
-    State.FramePointerPolicy = *Policy;
-  }
-  for (const auto &[Key, Destination] : {std::pair{"stackProtector", &State.StackProtector},
-                                         std::pair{"functionContext", &State.FunctionContext}}) {
-    if (const yaml::Node *Value = mappingValue(*Frame, Key)) {
-      std::string_view Reference;
-      if (scalar(*Value, Reference, "frame index"))
-        return true;
-      if (Reference.empty()) {
-        Destination->reset();
-        continue;
-      }
-      FrameIndex Index;
-      if (parseFrameReference(*Value, Context, Index))
-        return true;
-      *Destination = Index;
-    }
-  }
-  if (const yaml::Node *Value = mappingValue(*Frame, "maxCallFrameSize")) {
-    std::uint64_t Size = 0;
-    if (unsignedValue(*Value, Size, "a 32-bit unsigned maximum call-frame size") ||
-        Size > std::numeric_limits<std::uint32_t>::max()) {
-      return fail(Value->range(), "maximum call-frame size is outside the 32-bit unsigned range");
-    }
-    if (Size == std::numeric_limits<std::uint32_t>::max())
-      State.MaxCallFrameSize.reset();
-    else
-      State.MaxCallFrameSize = Size;
-  }
-  for (const auto &[Key, Destination] :
-       {std::pair{"cvBytesOfCalleeSavedRegisters", &State.CVBytesOfCalleeSavedRegisters},
-        std::pair{"localFrameSize", &State.LocalFrameSize}}) {
-    if (const yaml::Node *Value = mappingValue(*Frame, Key)) {
-      std::uint64_t Wide = 0;
-      if (unsignedValue(*Value, Wide, "a 32-bit unsigned frame value") ||
-          Wide > std::numeric_limits<std::uint32_t>::max()) {
-        return fail(Value->range(), "frame value is outside the 32-bit unsigned range");
-      }
-      *Destination = static_cast<std::uint32_t>(Wide);
-    }
-  }
-  if (const yaml::Node *Value = mappingValue(*Frame, "savePoint")) {
-    if (parseSaveRestorePoints(*Value, Function, State.SavePoints))
-      return true;
-  }
-  if (const yaml::Node *Value = mappingValue(*Frame, "restorePoint")) {
-    if (parseSaveRestorePoints(*Value, Function, State.RestorePoints))
-      return true;
-  }
-  auto StateResult = Function.frameInfo().setState(std::move(State));
-  if (!StateResult)
-    return importError(Frame->range(), StateResult.error());
-  return false;
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRFunctionParser.cpp b/backend/lib/MIR/MIRFunctionParser.cpp
deleted file mode 100644
index 6acf774..0000000
--- a/backend/lib/MIR/MIRFunctionParser.cpp
+++ /dev/null
@@ -1,552 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRDocumentParser.h"
-#include "MIRDocumentReferenceValidation.h"
-#include "MIRMetadataTextParser.h"
-#include "MIRParserUtilities.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineConstantPool.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionAttributes.h"
-#include "rcc/CodeGen/MachineFunctionProperties.h"
-#include "rcc/CodeGen/MachineFunctionRecords.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineJumpTableInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/MachineVerifier.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-
-#include <algorithm>
-#include <array>
-#include <cstddef>
-#include <cstdint>
-#include <initializer_list>
-#include <limits>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <unordered_map>
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-
-using parser_detail::parseBool;
-using parser_detail::parsePrefixedID;
-using parser_detail::parseSigned;
-using parser_detail::parseUnsigned;
-using parser_detail::parseUnsigned32;
-using parser_detail::trim;
-
-bool MIRDocumentParser::parseFunctionScalars(const yaml::Node &Root, MachineFunction &Function,
-                                             MIRFunctionDocumentInfo &DocumentInfo) {
-  if (const yaml::Node *AlignNode = mappingValue(Root, "alignment")) {
-    Alignment Align;
-    if (alignment(*AlignNode, Align, true))
-      return true;
-    if (Align.bytes() != 1 || AlignNode->scalar() != "0")
-      Function.attributes().setAlignment(Align);
-  }
-
-  constexpr std::array PropertyBindings{
-      std::pair{"legalized", MachineFunctionProperty::Legalized},
-      std::pair{"regBankSelected", MachineFunctionProperty::RegBankSelected},
-      std::pair{"selected", MachineFunctionProperty::Selected},
-      std::pair{"failedISel", MachineFunctionProperty::FailedISel},
-      std::pair{"tracksRegLiveness", MachineFunctionProperty::TracksLiveness},
-      std::pair{"noPhis", MachineFunctionProperty::NoPHIs},
-      std::pair{"isSSA", MachineFunctionProperty::IsSSA},
-      std::pair{"noVRegs", MachineFunctionProperty::NoVRegs},
-      std::pair{"failsVerification", MachineFunctionProperty::FailsVerification},
-  };
-  for (const auto &[Key, Property] : PropertyBindings) {
-    const yaml::Node *ValueNode = mappingValue(Root, Key);
-    if (ValueNode == nullptr)
-      continue;
-    bool Value = false;
-    if (boolean(*ValueNode, Value))
-      return true;
-    if (Value)
-      Function.properties().set(Property);
-    else
-      Function.properties().clear(Property);
-    if (Key == std::string_view("noPhis"))
-      DocumentInfo.NoPHIs = Value;
-    else if (Key == std::string_view("isSSA"))
-      DocumentInfo.IsSSA = Value;
-    else if (Key == std::string_view("noVRegs"))
-      DocumentInfo.NoVRegs = Value;
-  }
-
-  constexpr std::array AttributeBindings{
-      std::pair{"exposesReturnsTwice", MachineFunctionAttribute::ExposesReturnsTwice},
-      std::pair{"hasWinCFI", MachineFunctionAttribute::HasWinCFI},
-      std::pair{"hasFakeUses", MachineFunctionAttribute::HasFakeUses},
-      std::pair{"callsEHReturn", MachineFunctionAttribute::CallsEHReturn},
-      std::pair{"callsUnwindInit", MachineFunctionAttribute::CallsUnwindInit},
-      std::pair{"hasEHContTarget", MachineFunctionAttribute::HasEHContTarget},
-      std::pair{"hasEHScopes", MachineFunctionAttribute::HasEHScopes},
-      std::pair{"hasEHFunclets", MachineFunctionAttribute::HasEHFunclets},
-      std::pair{"isOutlined", MachineFunctionAttribute::IsOutlined},
-      std::pair{"debugInstrRef", MachineFunctionAttribute::DebugInstrRef},
-      std::pair{"tracksDebugUserValues", MachineFunctionAttribute::TracksDebugUserValues},
-  };
-  for (const auto &[Key, Attribute] : AttributeBindings) {
-    const yaml::Node *ValueNode = mappingValue(Root, Key);
-    if (ValueNode == nullptr)
-      continue;
-    bool Value = false;
-    if (boolean(*ValueNode, Value))
-      return true;
-    if (Value)
-      Function.attributes().set(Attribute);
-    else
-      Function.attributes().clear(Attribute);
-    if (Key == std::string_view("hasFakeUses"))
-      DocumentInfo.HasFakeUses = Value;
-  }
-
-  return false;
-}
-
-bool MIRDocumentParser::recomputeProperties(const yaml::Node &Root, MachineFunction &Function,
-                                            const MIRFunctionDocumentInfo &DocumentInfo) {
-  bool HasPHI = false;
-  bool HasFakeUse = false;
-  bool IsSSA = true;
-  bool HasTiedOperands = false;
-  bool AllTiedOperandsRewritten = true;
-  bool HasFrameIndex = false;
-  bool HasExecutablePseudo = false;
-  std::unordered_set<Register> Definitions;
-  for (const MachineBasicBlock *Block = Function.firstBlock(); Block != nullptr;
-       Block = Block->next()) {
-    for (const MachineInstr *Instruction = Block->firstInstruction(); Instruction != nullptr;
-         Instruction = Instruction->next()) {
-      const InstructionDescriptor *Descriptor = Target.instructionDescriptor(Instruction->opcode());
-      if (Descriptor == nullptr)
-        return fail(Root.range(), "instruction has no target descriptor");
-      HasPHI |= Descriptor->Flags.has(InstructionFlag::Phi);
-      HasFakeUse |= Descriptor->Flags.has(InstructionFlag::FakeUse);
-      HasExecutablePseudo |= Descriptor->Flags.has(InstructionFlag::Pseudo) &&
-                             !Descriptor->Flags.has(InstructionFlag::Meta) &&
-                             !Descriptor->Flags.has(InstructionFlag::TerminalEmission);
-      const auto Operands = Instruction->operands();
-      for (std::size_t Index = 0; Index < Operands.size(); ++Index) {
-        const MachineOperand &Operand = Operands[Index];
-        HasFrameIndex |= Operand.getIf<FrameIndexOperand>() != nullptr;
-        const auto Reg = Operand.registerValue();
-        if (Reg && Reg->isVirtual() && Operand.isDef() && !Definitions.insert(*Reg).second) {
-          IsSSA = false;
-        }
-        if (!Operand.tiedOperandIndex() || !Operand.isUse())
-          continue;
-        HasTiedOperands = true;
-        const MachineOperand *Definition = Instruction->operandAt(*Operand.tiedOperandIndex());
-        if (Definition == nullptr || Definition->registerValue() != Reg)
-          AllTiedOperandsRewritten = false;
-      }
-      for (const MachineMemOperand *Memory : Instruction->memOperands())
-        HasFrameIndex |= Memory->description().Base.frameIndex().has_value();
-    }
-  }
-  const bool NoPHIs = !HasPHI;
-  const bool NoVRegs =
-      std::ranges::none_of(Function.registerInfo().virtualRegisters(),
-                           [](const VirtualRegisterInfo &Info) { return !Info.IsTombstone; });
-
-  const auto ApplyComputed = [this, &Root, &Function](std::optional<bool> Explicit, bool Computed,
-                                                      MachineFunctionProperty Property,
-                                                      std::string_view Conflict) -> bool {
-    if (Explicit && *Explicit && !Computed) {
-      return fail(Root.range(), std::string(Function.name()) + std::string(Conflict));
-    }
-    if (Explicit.value_or(Computed))
-      Function.properties().set(Property);
-    else
-      Function.properties().clear(Property);
-    return false;
-  };
-  if (ApplyComputed(DocumentInfo.NoPHIs, NoPHIs, MachineFunctionProperty::NoPHIs,
-                    " has explicit property NoPhi, but contains at least one PHI") ||
-      ApplyComputed(DocumentInfo.IsSSA, IsSSA, MachineFunctionProperty::IsSSA,
-                    " has explicit property IsSSA, but is not valid SSA") ||
-      ApplyComputed(DocumentInfo.NoVRegs, NoVRegs, MachineFunctionProperty::NoVRegs,
-                    " has explicit property NoVRegs, but contains virtual registers")) {
-    return true;
-  }
-
-  if (DocumentInfo.HasFakeUses && !*DocumentInfo.HasFakeUses && HasFakeUse) {
-    return fail(Root.range(),
-                std::string(Function.name()) +
-                    " has explicit property hasFakeUses=false, but contains fake uses");
-  }
-  if (DocumentInfo.HasFakeUses.value_or(HasFakeUse))
-    Function.attributes().set(MachineFunctionAttribute::HasFakeUses);
-  else
-    Function.attributes().clear(MachineFunctionAttribute::HasFakeUses);
-
-  const bool Selected = Function.properties().has(MachineFunctionProperty::Selected);
-  const bool StructurallyPostSSA =
-      Selected && NoPHIs && !Function.properties().has(MachineFunctionProperty::IsSSA);
-  if (AllTiedOperandsRewritten && (HasTiedOperands || StructurallyPostSSA))
-    Function.properties().set(MachineFunctionProperty::TiedOpsRewritten);
-  else
-    Function.properties().clear(MachineFunctionProperty::TiedOpsRewritten);
-
-  if (HasFrameIndex)
-    Function.properties().clear(MachineFunctionProperty::NoFrameIndices);
-  else
-    Function.properties().set(MachineFunctionProperty::NoFrameIndices);
-
-  const MachineFrameState &FrameState = Function.frameInfo().state();
-  const bool StructurallyFinalizedFrame = Selected && NoVRegs && !HasFrameIndex &&
-                                          FrameState.IsCalleeSavedInfoValid &&
-                                          FrameState.MaxAlignment.has_value();
-  if (StructurallyFinalizedFrame) {
-    if (!Function.frameInfo().isFrozen()) {
-      auto Frozen = Function.frameInfo().freeze(FrameState.StackSize, *FrameState.MaxAlignment);
-      if (!Frozen)
-        return importError(Root.range(), Frozen.error(), "mir-frame-finalization");
-    }
-    Function.properties().set(MachineFunctionProperty::FrameFinalized);
-  } else {
-    Function.properties().clear(MachineFunctionProperty::FrameFinalized);
-  }
-
-  if (StructurallyFinalizedFrame && !HasExecutablePseudo)
-    Function.properties().set(MachineFunctionProperty::NoExecutablePseudos);
-  else
-    Function.properties().clear(MachineFunctionProperty::NoExecutablePseudos);
-  return false;
-}
-
-bool MIRDocumentParser::parseRegisters(const yaml::Node &Root, MachineFunction &Function,
-                                       MIParserContext &Context) {
-  const yaml::Node *Registers = mappingValue(Root, "registers");
-  if (Registers != nullptr) {
-    if (requireKind(*Registers, yaml::NodeKind::Sequence, "registers"))
-      return true;
-    constexpr std::array RegisterKeys{
-        std::string_view{"id"},
-        std::string_view{"class"},
-        std::string_view{"preferred-register"},
-        std::string_view{"flags"},
-    };
-    std::unordered_set<std::uint32_t> IDs;
-    for (const yaml::NodeID ElementID : Registers->sequence()) {
-      const yaml::Node *Element = node(ElementID);
-      if (Element == nullptr || requireKind(*Element, yaml::NodeKind::Mapping, "register entry") ||
-          validateKeys(*Element, RegisterKeys, "register")) {
-        return true;
-      }
-      const yaml::Node *IDNode = mappingValue(*Element, "id");
-      const yaml::Node *ClassNode = mappingValue(*Element, "class");
-      if (IDNode == nullptr || ClassNode == nullptr)
-        return fail(Element->range(), "register entry requires 'id' and 'class'");
-      std::uint64_t WideID = 0;
-      std::string_view ClassName;
-      if (unsignedValue(*IDNode, WideID, "a 32-bit virtual-register ID") ||
-          WideID > std::numeric_limits<std::uint32_t>::max() ||
-          scalar(*ClassNode, ClassName, "register class or bank")) {
-        return true;
-      }
-      const auto TextID = static_cast<std::uint32_t>(WideID);
-      if (!IDs.insert(TextID).second)
-        return fail(IDNode->range(), "duplicate virtual register ID");
-      auto Created = Function.registerInfo().createVirtualRegister();
-      if (!Created)
-        return importError(IDNode->range(), Created.error());
-      Context.VirtualRegisters.push_back({TextID, *Created});
-
-      if (ClassName != "_") {
-        if (const RegisterClassDesc *Class = Target.registers().registerClass(ClassName)) {
-          auto SetResult = Function.registerInfo().setRegisterClass(*Created, Class->ID);
-          if (!SetResult)
-            return importError(ClassNode->range(), SetResult.error());
-          SetResult = Function.registerInfo().setRegisterBank(*Created, Class->DefaultBank);
-          if (!SetResult)
-            return importError(ClassNode->range(), SetResult.error());
-        } else if (const RegisterBankDesc *Bank = Target.registers().registerBank(ClassName)) {
-          auto SetResult = Function.registerInfo().setRegisterBank(*Created, Bank->ID);
-          if (!SetResult)
-            return importError(ClassNode->range(), SetResult.error());
-        } else {
-          return fail(ClassNode->range(),
-                      "unknown register class or bank '" + std::string(ClassName) + "'");
-        }
-      }
-
-      if (const yaml::Node *Preferred = mappingValue(*Element, "preferred-register")) {
-        std::string_view PreferredName;
-        PhysicalRegister Reg;
-        if (scalar(*Preferred, PreferredName, "physical register"))
-          return true;
-        if (!trim(PreferredName).empty()) {
-          if (physicalRegister(PreferredName, Preferred->range(), Reg))
-            return true;
-          auto AddResult = Function.registerInfo().addAllocationHint(*Created, Reg);
-          if (!AddResult)
-            return importError(Preferred->range(), AddResult.error());
-        }
-      }
-      if (const yaml::Node *Flags = mappingValue(*Element, "flags")) {
-        if (requireKind(*Flags, yaml::NodeKind::Sequence, "virtual-register flags"))
-          return true;
-        std::uint8_t Mask = 0;
-        for (const yaml::NodeID FlagID : Flags->sequence()) {
-          const yaml::Node *FlagNode = node(FlagID);
-          std::string_view Name;
-          if (FlagNode == nullptr || scalar(*FlagNode, Name, "virtual-register flag"))
-            return true;
-          const auto Flag = Target.mirText().virtualRegisterFlag(Name);
-          if (!Flag)
-            return fail(FlagNode->range(),
-                        "use of undefined register flag '" + std::string(Name) + "'");
-          if ((Mask & *Flag) != 0)
-            return fail(FlagNode->range(), "duplicate virtual-register flag");
-          Mask = static_cast<std::uint8_t>(Mask | *Flag);
-        }
-        auto SetResult = Function.registerInfo().setTargetRegisterFlags(*Created, Mask);
-        if (!SetResult)
-          return importError(Flags->range(), SetResult.error());
-      }
-    }
-  }
-
-  const yaml::Node *LiveIns = mappingValue(Root, "liveins");
-  if (LiveIns != nullptr) {
-    if (requireKind(*LiveIns, yaml::NodeKind::Sequence, "liveins"))
-      return true;
-    constexpr std::array LiveInKeys{
-        std::string_view{"reg"},
-        std::string_view{"virtual-reg"},
-    };
-    for (const yaml::NodeID ElementID : LiveIns->sequence()) {
-      const yaml::Node *Element = node(ElementID);
-      if (Element == nullptr || requireKind(*Element, yaml::NodeKind::Mapping, "live-in entry") ||
-          validateKeys(*Element, LiveInKeys, "live-in")) {
-        return true;
-      }
-      const yaml::Node *RegNode = mappingValue(*Element, "reg");
-      if (RegNode == nullptr)
-        return fail(Element->range(), "live-in entry requires 'reg'");
-      PhysicalRegister Reg;
-      if (physicalRegister(*RegNode, Reg))
-        return true;
-      std::optional<Register> Initial;
-      if (const yaml::Node *VirtualNode = mappingValue(*Element, "virtual-reg")) {
-        std::string_view Text;
-        if (scalar(*VirtualNode, Text, "virtual register"))
-          return true;
-        if (!trim(Text).empty()) {
-          Register Virtual;
-          if (virtualRegister(Text, VirtualNode->range(), Function, Context, Virtual))
-            return true;
-          Initial = Virtual;
-        }
-      }
-      auto AddResult = Function.registerInfo().addLiveIn(Reg, Initial);
-      if (!AddResult)
-        return importError(Element->range(), AddResult.error());
-    }
-  }
-
-  if (const yaml::Node *CalleeSaved = mappingValue(Root, "calleeSavedRegisters")) {
-    if (requireKind(*CalleeSaved, yaml::NodeKind::Sequence, "callee-saved registers"))
-      return true;
-    std::vector<PhysicalRegister> RegistersValue;
-    for (const yaml::NodeID RegID : CalleeSaved->sequence()) {
-      const yaml::Node *RegNode = node(RegID);
-      PhysicalRegister Reg;
-      if (RegNode == nullptr || physicalRegister(*RegNode, Reg))
-        return true;
-      RegistersValue.push_back(Reg);
-    }
-    auto SetResult = Function.records().setCalleeSavedRegisters(std::move(RegistersValue));
-    if (!SetResult)
-      return importError(CalleeSaved->range(), SetResult.error());
-  }
-  return false;
-}
-
-TextRange MIRDocumentParser::scalarDiagnosticRange(const yaml::Node &Scalar,
-                                                   const TextRange &ScalarRange) const noexcept {
-  if (Scalar.scalarStyle() != yaml::ScalarStyle::Literal &&
-      Scalar.scalarStyle() != yaml::ScalarStyle::Folded) {
-    std::size_t ContentOffset = Scalar.range().Begin.Offset;
-    if (Scalar.scalarStyle() == yaml::ScalarStyle::SingleQuoted ||
-        Scalar.scalarStyle() == yaml::ScalarStyle::DoubleQuoted) {
-      ++ContentOffset;
-    }
-    return Result.Source.range(ContentOffset + ScalarRange.Begin.Offset,
-                               ContentOffset + ScalarRange.End.Offset);
-  }
-
-  const std::size_t FirstBodyLine = Scalar.range().Begin.Line + 1U;
-  const std::size_t LastBodyLine = Scalar.range().End.Line;
-  if (FirstBodyLine > LastBodyLine || FirstBodyLine == 0)
-    return Scalar.range();
-
-  std::size_t Indent = 0;
-  bool FoundContent = false;
-  for (std::size_t Line = FirstBodyLine; Line <= LastBodyLine; ++Line) {
-    const std::string_view Text = Result.Source.line(Line);
-    std::size_t CurrentIndent = 0;
-    while (CurrentIndent < Text.size() && Text[CurrentIndent] == ' ')
-      ++CurrentIndent;
-    if (CurrentIndent == Text.size())
-      continue;
-    Indent = CurrentIndent;
-    FoundContent = true;
-    break;
-  }
-  if (!FoundContent)
-    return Scalar.range();
-
-  const TextPosition DefaultPosition = Scalar.range().Begin;
-  const auto MapPosition = [this, FirstBodyLine, LastBodyLine, Indent,
-                            DefaultPosition](TextPosition Position) {
-    const std::size_t SourceLine = FirstBodyLine + Position.Line - 1U;
-    if (Position.Line == 0 || SourceLine > LastBodyLine || SourceLine > Result.Source.lineCount()) {
-      return DefaultPosition;
-    }
-    const std::string_view SourceLineText = Result.Source.line(SourceLine);
-    const std::size_t BodyColumn = Position.Column == 0 ? 0 : Position.Column - 1U;
-    const std::size_t SourceColumn = std::min(Indent + BodyColumn, SourceLineText.size());
-    const std::size_t Offset = Result.Source.lineOffsets()[SourceLine - 1U] + SourceColumn;
-    return Result.Source.positionAt(Offset);
-  };
-  return {.Begin = MapPosition(ScalarRange.Begin), .End = MapPosition(ScalarRange.End)};
-}
-
-bool MIRDocumentParser::parseBody(const yaml::Node &Root, MachineFunction &Function,
-                                  MIParserContext &Context) {
-  const yaml::Node *Body = mappingValue(Root, "body");
-  std::string BodyText;
-  TextRange BodyRange = Root.range();
-  if (Body != nullptr) {
-    std::string_view Text;
-    if (scalar(*Body, Text, "machine function body"))
-      return true;
-    BodyText = Text;
-    BodyRange = Body->range();
-  }
-
-  if (!effectiveDataLayout().empty()) {
-    const LLVMConstantSyntaxOptions PointerOptions = pointerLayoutOptions();
-    Context.PointerSizeInBits = [PointerOptions](std::uint32_t AddressSpace) {
-      return llvmPointerSizeInBits(AddressSpace, PointerOptions);
-    };
-  }
-  Context.SyncScopes = ActiveDocument->SyncScopes;
-  Context.InternSyncScope = [this](std::string_view Name) -> Expected<SyncScopeID> {
-    if (Name.empty())
-      return makeUnexpected(ErrorCode::ParseError, "synchronization scope name cannot be empty");
-    const auto Existing =
-        std::ranges::find_if(ActiveDocument->SyncScopes,
-                             [Name](const MISyncScopeSlot &Slot) { return Slot.Name == Name; });
-    if (Existing != ActiveDocument->SyncScopes.end())
-      return Existing->ID;
-    if (ActiveDocument->SyncScopes.size() >=
-        static_cast<std::size_t>(std::numeric_limits<std::uint32_t>::max())) {
-      return makeUnexpected(ErrorCode::Unsupported,
-                            "MIR document contains too many synchronization scopes");
-    }
-    const auto ID =
-        SyncScopeID::fromValue(static_cast<std::uint32_t>(ActiveDocument->SyncScopes.size() + 1U));
-    ActiveDocument->SyncScopes.push_back({.Name = std::string(Name), .ID = ID});
-    return ID;
-  };
-  MIParserOptions BodyOptions = Options.MachineInstructions;
-  BodyOptions.VerifyAfterParse = false;
-  MIParser Parser(Function, Target,
-                  std::string(Result.Source.name()) + ":" + std::string(Function.name()),
-                  std::move(BodyText), Context, BodyOptions);
-  auto Parsed = Parser.parse();
-  if (!Parsed) {
-    if (!Parser.diagnostics().empty()) {
-      const TextRange Range =
-          Body == nullptr ? BodyRange
-                          : scalarDiagnosticRange(*Body, Parser.diagnostics().front().Range);
-      return fail(Range, Parser.diagnostics().front().Message, "mir-body");
-    }
-    return importError(BodyRange, Parsed.error(), "mir-body");
-  }
-  return false;
-}
-
-bool MIRDocumentParser::convertTargetNode(const yaml::Node &Source, MIRTargetNode &Destination) {
-  switch (Source.kind()) {
-  case yaml::NodeKind::Null:
-    Destination = MIRTargetNode::null();
-    return false;
-  case yaml::NodeKind::Scalar:
-    Destination = MIRTargetNode::scalar(std::string(Source.scalar()));
-    return false;
-  case yaml::NodeKind::Sequence: {
-    std::vector<MIRTargetNode> Values;
-    Values.reserve(Source.sequence().size());
-    for (const yaml::NodeID ElementID : Source.sequence()) {
-      const yaml::Node *Element = node(ElementID);
-      if (Element == nullptr)
-        return fail(Source.range(), "target MIR sequence contains an invalid node");
-      MIRTargetNode Value;
-      if (convertTargetNode(*Element, Value))
-        return true;
-      Values.push_back(std::move(Value));
-    }
-    Destination = MIRTargetNode::sequence(std::move(Values));
-    return false;
-  }
-  case yaml::NodeKind::Mapping: {
-    std::vector<MIRTargetMappingEntry> Entries;
-    Entries.reserve(Source.mapping().size());
-    for (const yaml::MappingEntry &SourceEntry : Source.mapping()) {
-      const yaml::Node *ValueNode = node(SourceEntry.Value);
-      if (ValueNode == nullptr)
-        return fail(SourceEntry.KeyRange, "target MIR mapping contains an invalid node");
-      MIRTargetNode Value;
-      if (convertTargetNode(*ValueNode, Value))
-        return true;
-      Entries.push_back({SourceEntry.Key, std::move(Value)});
-    }
-    Destination = MIRTargetNode::mapping(std::move(Entries));
-    return false;
-  }
-  }
-  return fail(Source.range(), "target MIR node has an unknown kind");
-}
-
-bool MIRDocumentParser::parseTargetState(const yaml::Node &Root, MachineFunction &Function) {
-  const yaml::Node *StateNode = mappingValue(Root, "machineFunctionInfo");
-  if (StateNode == nullptr)
-    return false;
-  MIRTargetNode TargetNode;
-  if (convertTargetNode(*StateNode, TargetNode))
-    return true;
-  auto State = Target.mirText().parseFunctionState(TargetNode);
-  if (!State)
-    return importError(StateNode->range(), State.error(), "mir-target-state");
-  auto SetResult = Function.setTargetState(std::move(*State));
-  if (!SetResult)
-    return importError(StateNode->range(), SetResult.error(), "mir-target-state");
-  return false;
-}
-
-bool MIRDocumentParser::validateDocumentReferences(const MachineFunction &Function) {
-  auto Verification = verifyMIRDocumentReferences(*ActiveDocument, Function, true);
-  if (Verification)
-    return false;
-  return importError(Result.Source.range(0, 0), Verification.error());
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRFunctionRecordsParser.cpp b/backend/lib/MIR/MIRFunctionRecordsParser.cpp
deleted file mode 100644
index 04857bb..0000000
--- a/backend/lib/MIR/MIRFunctionRecordsParser.cpp
+++ /dev/null
@@ -1,341 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRDocumentParser.h"
-#include "MIRDocumentReferenceValidation.h"
-#include "MIRMetadataTextParser.h"
-#include "MIRParserUtilities.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineConstantPool.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionAttributes.h"
-#include "rcc/CodeGen/MachineFunctionProperties.h"
-#include "rcc/CodeGen/MachineFunctionRecords.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineJumpTableInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/MachineVerifier.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-
-#include <algorithm>
-#include <array>
-#include <cstddef>
-#include <cstdint>
-#include <initializer_list>
-#include <limits>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <unordered_map>
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-
-using parser_detail::parseBool;
-using parser_detail::parsePrefixedID;
-using parser_detail::parseSigned;
-using parser_detail::parseUnsigned;
-using parser_detail::parseUnsigned32;
-using parser_detail::trim;
-
-bool MIRDocumentParser::parseFunctionRecords(const yaml::Node &Root, MachineFunction &Function) {
-  auto ParseLocation = [this, &Function](const yaml::Node &Entry,
-                                         MachineInstr *&Instruction) -> bool {
-    const yaml::Node *BlockNode = mappingValue(Entry, "bb");
-    const yaml::Node *OffsetNode = mappingValue(Entry, "offset");
-    if (BlockNode == nullptr || OffsetNode == nullptr)
-      return fail(Entry.range(), "instruction location requires 'bb' and 'offset'");
-    std::uint64_t Block = 0;
-    std::uint64_t Offset = 0;
-    if (unsignedValue(*BlockNode, Block, "a 32-bit basic block number") ||
-        unsignedValue(*OffsetNode, Offset, "a 32-bit instruction offset") ||
-        Block > std::numeric_limits<std::uint32_t>::max() ||
-        Offset > std::numeric_limits<std::uint32_t>::max()) {
-      return true;
-    }
-    Instruction = instructionAt(Function, static_cast<std::uint32_t>(Block),
-                                static_cast<std::uint32_t>(Offset));
-    if (Instruction == nullptr)
-      return fail(Entry.range(), "instruction location is outside the machine function body");
-    return false;
-  };
-
-  if (const yaml::Node *CallSites = mappingValue(Root, "callSites")) {
-    if (requireKind(*CallSites, yaml::NodeKind::Sequence, "call-site records"))
-      return true;
-    constexpr std::array CallSiteKeys{
-        std::string_view{"bb"},
-        std::string_view{"offset"},
-        std::string_view{"fwdArgRegs"},
-        std::string_view{"calleeTypeIds"},
-    };
-    constexpr std::array ArgumentKeys{
-        std::string_view{"arg"},
-        std::string_view{"reg"},
-    };
-    for (const yaml::NodeID CallSiteID : CallSites->sequence()) {
-      const yaml::Node *CallSiteNode = node(CallSiteID);
-      if (CallSiteNode == nullptr ||
-          requireKind(*CallSiteNode, yaml::NodeKind::Mapping, "call-site record") ||
-          validateKeys(*CallSiteNode, CallSiteKeys, "call-site record")) {
-        return true;
-      }
-      MachineInstr *Call = nullptr;
-      if (ParseLocation(*CallSiteNode, Call))
-        return true;
-      if (Call == nullptr)
-        return fail(CallSiteNode->range(),
-                    "instruction location is outside the machine function body");
-      MachineCallSiteInfo Info{
-          .CallInstruction = Call->stableID(),
-          .ForwardedArguments = {},
-          .CalleeTypeIDs = {},
-      };
-      if (const yaml::Node *Arguments = mappingValue(*CallSiteNode, "fwdArgRegs")) {
-        if (requireKind(*Arguments, yaml::NodeKind::Sequence, "forwarded call arguments")) {
-          return true;
-        }
-        for (const yaml::NodeID ArgumentID : Arguments->sequence()) {
-          const yaml::Node *Argument = node(ArgumentID);
-          if (Argument == nullptr ||
-              requireKind(*Argument, yaml::NodeKind::Mapping, "forwarded call argument") ||
-              validateKeys(*Argument, ArgumentKeys, "forwarded call argument")) {
-            return true;
-          }
-          const yaml::Node *NumberNode = mappingValue(*Argument, "arg");
-          const yaml::Node *RegNode = mappingValue(*Argument, "reg");
-          if (NumberNode == nullptr || RegNode == nullptr)
-            return fail(Argument->range(), "forwarded call argument requires 'arg' and 'reg'");
-          std::uint16_t Number = 0;
-          std::uint64_t WideNumber = 0;
-          PhysicalRegister Reg;
-          if (unsignedValue(*NumberNode, WideNumber, "a 16-bit argument number") ||
-              WideNumber > std::numeric_limits<std::uint16_t>::max() ||
-              physicalRegister(*RegNode, Reg)) {
-            return true;
-          }
-          Number = static_cast<std::uint16_t>(WideNumber);
-          Info.ForwardedArguments.push_back({Reg, Number});
-        }
-      }
-      if (const yaml::Node *TypeIDs = mappingValue(*CallSiteNode, "calleeTypeIds")) {
-        if (requireKind(*TypeIDs, yaml::NodeKind::Sequence, "callee type IDs"))
-          return true;
-        for (const yaml::NodeID TypeID : TypeIDs->sequence()) {
-          const yaml::Node *TypeNode = node(TypeID);
-          std::uint64_t Value = 0;
-          if (TypeNode == nullptr ||
-              unsignedValue(*TypeNode, Value, "an unsigned callee type ID")) {
-            return true;
-          }
-          Info.CalleeTypeIDs.push_back(Value);
-        }
-      }
-      auto AddResult = Function.records().addCallSite(std::move(Info));
-      if (!AddResult)
-        return importError(CallSiteNode->range(), AddResult.error());
-    }
-  }
-
-  if (const yaml::Node *CalledGlobals = mappingValue(Root, "calledGlobals")) {
-    if (requireKind(*CalledGlobals, yaml::NodeKind::Sequence, "called-global records"))
-      return true;
-    constexpr std::array Keys{
-        std::string_view{"bb"},
-        std::string_view{"offset"},
-        std::string_view{"callee"},
-        std::string_view{"flags"},
-    };
-    for (const yaml::NodeID CalledID : CalledGlobals->sequence()) {
-      const yaml::Node *CalledNode = node(CalledID);
-      if (CalledNode == nullptr ||
-          requireKind(*CalledNode, yaml::NodeKind::Mapping, "called-global record") ||
-          validateKeys(*CalledNode, Keys, "called-global record")) {
-        return true;
-      }
-      MachineInstr *Call = nullptr;
-      if (ParseLocation(*CalledNode, Call))
-        return true;
-      if (Call == nullptr)
-        return fail(CalledNode->range(),
-                    "instruction location is outside the machine function body");
-      const yaml::Node *CalleeNode = mappingValue(*CalledNode, "callee");
-      const yaml::Node *FlagsNode = mappingValue(*CalledNode, "flags");
-      if (CalleeNode == nullptr || FlagsNode == nullptr)
-        return fail(CalledNode->range(), "called-global record requires 'callee' and 'flags'");
-      std::string_view Callee;
-      std::uint64_t WideFlags = 0;
-      if (scalar(*CalleeNode, Callee, "callee name") ||
-          unsignedValue(*FlagsNode, WideFlags, "32-bit called-global flags") ||
-          WideFlags > std::numeric_limits<std::uint32_t>::max()) {
-        return true;
-      }
-      if (ActiveDocument->EmbeddedIR && !ActiveDocument->EmbeddedIR->hasGlobalValue(Callee)) {
-        return fail(CalleeNode->range(), "called global references an undefined embedded global");
-      }
-      auto AddResult =
-          Function.records().addCalledGlobal({.CallInstruction = Call->stableID(),
-                                              .Callee = std::string(Callee),
-                                              .Flags = static_cast<std::uint32_t>(WideFlags)});
-      if (!AddResult)
-        return importError(CalledNode->range(), AddResult.error());
-    }
-  }
-
-  if (const yaml::Node *Substitutions = mappingValue(Root, "debugValueSubstitutions")) {
-    if (requireKind(*Substitutions, yaml::NodeKind::Sequence, "debug value substitutions")) {
-      return true;
-    }
-    constexpr std::array Keys{
-        std::string_view{"srcinst"}, std::string_view{"srcop"},  std::string_view{"dstinst"},
-        std::string_view{"dstop"},   std::string_view{"subreg"},
-    };
-    for (const yaml::NodeID SubstitutionID : Substitutions->sequence()) {
-      const yaml::Node *Substitution = node(SubstitutionID);
-      if (Substitution == nullptr ||
-          requireKind(*Substitution, yaml::NodeKind::Mapping, "debug value substitution") ||
-          validateKeys(*Substitution, Keys, "debug value substitution")) {
-        return true;
-      }
-      std::array<std::uint32_t, 5> Values{};
-      for (std::size_t Index = 0; Index < Keys.size(); ++Index) {
-        const yaml::Node *ValueNode = mappingValue(*Substitution, Keys[Index]);
-        if (ValueNode == nullptr)
-          return fail(Substitution->range(), "debug value substitution requires every fixed field");
-        std::uint64_t Wide = 0;
-        if (unsignedValue(*ValueNode, Wide, "a 32-bit debug substitution value") ||
-            Wide > std::numeric_limits<std::uint32_t>::max()) {
-          return true;
-        }
-        Values[Index] = static_cast<std::uint32_t>(Wide);
-      }
-      auto AddResult = Function.records().addDebugValueSubstitution(
-          {.Source = {Values[0], Values[1]},
-           .Destination = {Values[2], Values[3]},
-           .Subregister = SubRegIndex::fromValue(Values[4])});
-      if (!AddResult)
-        return importError(Substitution->range(), AddResult.error());
-    }
-  }
-
-  if (const yaml::Node *PrefetchTargets = mappingValue(Root, "prefetch-targets")) {
-    if (requireKind(*PrefetchTargets, yaml::NodeKind::Sequence, "prefetch targets"))
-      return true;
-    for (const yaml::NodeID TargetID : PrefetchTargets->sequence()) {
-      const yaml::Node *TargetNode = node(TargetID);
-      std::string_view Text;
-      if (TargetNode == nullptr || scalar(*TargetNode, Text, "prefetch target"))
-        return true;
-
-      std::size_t ContentOffset = TargetNode->range().Begin.Offset;
-      if (TargetNode->scalarStyle() == yaml::ScalarStyle::SingleQuoted ||
-          TargetNode->scalarStyle() == yaml::ScalarStyle::DoubleQuoted) {
-        ++ContentOffset;
-      }
-      const auto ErrorRange = [this, ContentOffset](std::size_t Begin, std::size_t End = 1U) {
-        return Result.Source.range(ContentOffset + Begin, ContentOffset + Begin + End);
-      };
-      const auto SkipSpace = [&Text](std::size_t &Cursor) {
-        while (Cursor < Text.size() && (Text[Cursor] == ' ' || Text[Cursor] == '\t'))
-          ++Cursor;
-      };
-      const auto ParseNumber = [&Text, &SkipSpace](std::size_t &Cursor, std::uint32_t &Value) {
-        SkipSpace(Cursor);
-        const std::size_t Begin = Cursor;
-        while (Cursor < Text.size() && Text[Cursor] >= '0' && Text[Cursor] <= '9')
-          ++Cursor;
-        return Begin != Cursor && parseUnsigned32(Text.substr(Begin, Cursor - Begin), Value);
-      };
-
-      std::size_t Cursor = 0;
-      SkipSpace(Cursor);
-      if (!Text.substr(Cursor).starts_with("bb_id") ||
-          (Cursor + std::string_view("bb_id").size() < Text.size() &&
-           Text[Cursor + std::string_view("bb_id").size()] != ' ' &&
-           Text[Cursor + std::string_view("bb_id").size()] != '\t')) {
-        return fail(ErrorRange(Cursor), "expected 'bb_id'");
-      }
-      Cursor += std::string_view("bb_id").size();
-
-      std::array<std::uint32_t, 3> Values{};
-      if (!ParseNumber(Cursor, Values[0]))
-        return fail(ErrorRange(0), "expected unsigned integer");
-
-      SkipSpace(Cursor);
-      if (Cursor < Text.size() && (Text[Cursor] == ',' || Text[Cursor] == '.')) {
-        ++Cursor;
-        if (!ParseNumber(Cursor, Values[1]))
-          return fail(ErrorRange(0), "expected unsigned integer");
-      } else if (Cursor < Text.size() && Text[Cursor] >= '0' && Text[Cursor] <= '9') {
-        if (!ParseNumber(Cursor, Values[1]))
-          return fail(ErrorRange(0), "expected unsigned integer");
-      }
-
-      SkipSpace(Cursor);
-      if (Cursor >= Text.size() || Text[Cursor] != ',')
-        return fail(ErrorRange(Cursor), "expected ','");
-      ++Cursor;
-      if (!ParseNumber(Cursor, Values[2]))
-        return fail(ErrorRange(0), "expected unsigned integer");
-      SkipSpace(Cursor);
-      if (Cursor != Text.size())
-        return fail(ErrorRange(0), "unexpected content after prefetch target");
-
-      auto AddResult = Function.records().addPrefetchTarget(
-          {.Block = {Values[0], Values[1]}, .CallsiteIndex = Values[2]});
-      if (!AddResult)
-        return importError(TargetNode->range(), AddResult.error());
-    }
-  }
-
-  if (const yaml::Node *EntryValues = mappingValue(Root, "entry_values")) {
-    if (requireKind(*EntryValues, yaml::NodeKind::Sequence, "entry values"))
-      return true;
-    constexpr std::array Keys{
-        std::string_view{"entry-value-register"},
-        std::string_view{"debug-info-variable"},
-        std::string_view{"debug-info-expression"},
-        std::string_view{"debug-info-location"},
-    };
-    for (const yaml::NodeID EntryID : EntryValues->sequence()) {
-      const yaml::Node *Entry = node(EntryID);
-      if (Entry == nullptr || requireKind(*Entry, yaml::NodeKind::Mapping, "entry value") ||
-          validateKeys(*Entry, Keys, "entry value")) {
-        return true;
-      }
-      const yaml::Node *RegNode = mappingValue(*Entry, "entry-value-register");
-      const yaml::Node *VariableNode = mappingValue(*Entry, "debug-info-variable");
-      const yaml::Node *ExpressionNode = mappingValue(*Entry, "debug-info-expression");
-      const yaml::Node *LocationNode = mappingValue(*Entry, "debug-info-location");
-      if (RegNode == nullptr || VariableNode == nullptr || ExpressionNode == nullptr ||
-          LocationNode == nullptr) {
-        return fail(Entry->range(), "entry value requires all four fixed fields");
-      }
-      PhysicalRegister Reg;
-      if (physicalRegister(*RegNode, Reg))
-        return true;
-      MachineVariableDebugInfo DebugInfo;
-      if (parseVariableDebugInfo(*Entry, Function, DebugInfo))
-        return true;
-      if (!DebugInfo.Variable || !DebugInfo.Expression || !DebugInfo.Location) {
-        return fail(Entry->range(), "entry value debug metadata cannot be empty",
-                    "mir-debug-metadata");
-      }
-      auto AddResult =
-          Function.records().addEntryValue({.Reg = Reg, .DebugInfo = std::move(DebugInfo)});
-      if (!AddResult)
-        return importError(Entry->range(), AddResult.error());
-    }
-  }
-  return false;
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRMetadataParser.cpp b/backend/lib/MIR/MIRMetadataParser.cpp
deleted file mode 100644
index 63727ee..0000000
--- a/backend/lib/MIR/MIRMetadataParser.cpp
+++ /dev/null
@@ -1,333 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRDocumentParser.h"
-#include "MIRDocumentReferenceValidation.h"
-#include "MIRMetadataTextParser.h"
-#include "MIRParserUtilities.h"
-#include "rcc/CodeGen/MachineBasicBlock.h"
-#include "rcc/CodeGen/MachineConstantPool.h"
-#include "rcc/CodeGen/MachineFrameInfo.h"
-#include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionAttributes.h"
-#include "rcc/CodeGen/MachineFunctionProperties.h"
-#include "rcc/CodeGen/MachineFunctionRecords.h"
-#include "rcc/CodeGen/MachineInstr.h"
-#include "rcc/CodeGen/MachineJumpTableInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/CodeGen/MachineRegisterInfo.h"
-#include "rcc/CodeGen/MachineVerifier.h"
-#include "rcc/CodeGen/TargetDescription.h"
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
-#include "rcc/MIR/LLVMConstantSyntax.h"
-#include "rcc/MIR/MILexer.h"
-
-#include <algorithm>
-#include <array>
-#include <cstddef>
-#include <cstdint>
-#include <initializer_list>
-#include <limits>
-#include <optional>
-#include <ranges>
-#include <span>
-#include <string>
-#include <string_view>
-#include <unordered_map>
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-
-using parser_detail::parseBool;
-using parser_detail::parsePrefixedID;
-using parser_detail::parseSigned;
-using parser_detail::parseUnsigned;
-using parser_detail::parseUnsigned32;
-using parser_detail::trim;
-
-Expected<MachineMetadataReference>
-MIRDocumentParser::resolveMetadataReference(const MachineFunction &Function,
-                                            std::uint32_t Slot) const {
-  if (ActiveDocument != nullptr && ActiveDocument->EmbeddedIR &&
-      ActiveDocument->EmbeddedIR->metadata(std::to_string(Slot)) != nullptr) {
-    return MachineMetadataReference::embeddedIR(Slot);
-  }
-  if (Function.metadata().node(Slot) != nullptr)
-    return MachineMetadataReference::machineFunction(Slot);
-  return makeUnexpected(ErrorCode::ParseError,
-                        "metadata reference uses undefined slot '!" + std::to_string(Slot) + "'");
-}
-
-bool MIRDocumentParser::parseVariableDebugInfo(const yaml::Node &Entry, MachineFunction &Function,
-                                               MachineVariableDebugInfo &DebugInfo) {
-  const auto Resolve = [this, &Function](std::uint32_t Slot) {
-    return resolveMetadataReference(Function, Slot);
-  };
-  if (const yaml::Node *VariableNode = mappingValue(Entry, "debug-info-variable")) {
-    std::string_view Text;
-    if (scalar(*VariableNode, Text, "debug variable"))
-      return true;
-    if (!Text.empty()) {
-      MetadataTextParser Parser(std::string(Text), Resolve);
-      auto Reference = Parser.parseReferenceOnly();
-      if (!Reference)
-        return importError(VariableNode->range(), Reference.error(), "mir-debug-metadata");
-      if (Reference->scope() != MachineMetadataScope::EmbeddedIR) {
-        return fail(VariableNode->range(),
-                    "debug variable must reference embedded LLVM IR metadata",
-                    "mir-debug-metadata");
-      }
-      DebugInfo.Variable = *Reference;
-    }
-  }
-  if (const yaml::Node *ExpressionNode = mappingValue(Entry, "debug-info-expression")) {
-    std::string_view Text;
-    if (scalar(*ExpressionNode, Text, "debug expression"))
-      return true;
-    if (!Text.empty()) {
-      MetadataTextParser Parser(std::string(Text), Resolve);
-      auto Value = Parser.parseValue();
-      if (!Value)
-        return importError(scalarDiagnosticRange(*ExpressionNode, Parser.diagnosticRange()),
-                           Value.error(), "mir-debug-metadata");
-      if (Value->reference() != nullptr &&
-          Value->reference()->scope() != MachineMetadataScope::EmbeddedIR) {
-        return fail(ExpressionNode->range(),
-                    "debug expression reference must use embedded LLVM IR metadata",
-                    "mir-debug-metadata");
-      }
-      DebugInfo.Expression = std::move(*Value);
-    }
-  }
-  if (const yaml::Node *LocationNode = mappingValue(Entry, "debug-info-location")) {
-    std::string_view Text;
-    if (scalar(*LocationNode, Text, "debug location"))
-      return true;
-    if (!Text.empty()) {
-      MetadataTextParser Parser(std::string(Text), Resolve);
-      auto Location = Parser.parseLocation();
-      if (!Location)
-        return importError(LocationNode->range(), Location.error(), "mir-debug-metadata");
-      if (Location->reference() != nullptr &&
-          Location->reference()->scope() != MachineMetadataScope::EmbeddedIR) {
-        return fail(LocationNode->range(),
-                    "variable debug location must reference embedded LLVM IR metadata",
-                    "mir-debug-metadata");
-      }
-      DebugInfo.Location = std::move(*Location);
-    }
-  }
-  if (!DebugInfo.Variable && !DebugInfo.Expression && !DebugInfo.Location)
-    return false;
-  auto Verification = DebugInfo.verifyStructure();
-  if (!Verification)
-    return importError(Entry.range(), Verification.error(), "mir-debug-metadata");
-  return false;
-}
-
-bool MIRDocumentParser::parseMetadata(const yaml::Node &Root, MachineFunction &Function,
-                                      MIParserContext &Context) {
-  if (ActiveDocument->EmbeddedIR) {
-    for (const EmbeddedIRMetadataDefinition &Reference :
-         ActiveDocument->EmbeddedIR->metadataDefinitions()) {
-      std::uint32_t ID = 0;
-      if (!parseUnsigned32(Reference.Name, ID))
-        continue;
-      if (std::ranges::any_of(Context.Metadata,
-                              [ID](const MIMetadataSlot &Slot) { return Slot.TextID == ID; })) {
-        return fail(Root.range(), "embedded LLVM IR metadata slots are not unique");
-      }
-      Context.Metadata.push_back(
-          {.TextID = ID, .Reference = MachineMetadataReference::embeddedIR(ID)});
-    }
-  }
-
-  const yaml::Node *Metadata = mappingValue(Root, "machineMetadataNodes");
-  if (Metadata == nullptr)
-    return false;
-  if (requireKind(*Metadata, yaml::NodeKind::Sequence, "machine metadata nodes"))
-    return true;
-
-  enum class ParsedElementKind : std::uint8_t {
-    Null,
-    Reference,
-    String,
-  };
-  struct ParsedElement final {
-    ParsedElementKind Kind = ParsedElementKind::Reference;
-    std::uint32_t Reference = 0;
-    std::string String;
-    TextRange Range;
-  };
-  struct Definition final {
-    const yaml::Node *Node = nullptr;
-    std::uint32_t Slot = 0;
-    bool IsDistinct = false;
-    std::vector<ParsedElement> Elements;
-  };
-  std::vector<Definition> Definitions;
-  std::unordered_set<std::uint32_t> Slots;
-
-  const auto TranslateRange = [this](const yaml::Node &Node, const TextRange &Range) {
-    std::size_t ContentBegin = Node.range().Begin.Offset;
-    if (Node.scalarStyle() == yaml::ScalarStyle::SingleQuoted ||
-        Node.scalarStyle() == yaml::ScalarStyle::DoubleQuoted) {
-      ++ContentBegin;
-    }
-    return Result.Source.range(ContentBegin + Range.Begin.Offset, ContentBegin + Range.End.Offset);
-  };
-
-  for (const yaml::NodeID DefinitionID : Metadata->sequence()) {
-    const yaml::Node *DefinitionNode = node(DefinitionID);
-    std::string_view Text;
-    if (DefinitionNode == nullptr || scalar(*DefinitionNode, Text, "machine metadata definition"))
-      return true;
-
-    MILexer Lexer("machine-metadata", std::string(Text));
-    MIToken Token = Lexer.next();
-    const auto LexerFailed = [this, &Lexer, DefinitionNode, &TranslateRange, &Token]() -> bool {
-      if (!Token.is(MITokenKind::Error))
-        return false;
-      const auto Diagnostics = Lexer.diagnostics();
-      const TextRange Range = Diagnostics.empty()
-                                  ? TranslateRange(*DefinitionNode, Token.range())
-                                  : TranslateRange(*DefinitionNode, Diagnostics.front().Range);
-      return fail(Range, Diagnostics.empty() ? "invalid machine metadata node"
-                                             : Diagnostics.front().Message);
-    };
-    const auto Advance = [&Lexer, &Token, &LexerFailed]() -> bool {
-      Token = Lexer.next();
-      return LexerFailed();
-    };
-    const auto FailAtToken = [this, DefinitionNode, &TranslateRange](const MIToken &At,
-                                                                     std::string Message) {
-      return fail(TranslateRange(*DefinitionNode, At.range()), std::move(Message));
-    };
-
-    if (LexerFailed())
-      return true;
-    if (!Token.is(MITokenKind::Exclaim))
-      return FailAtToken(Token, "expected a metadata node");
-    if (Advance())
-      return true;
-    std::uint32_t Slot = 0;
-    if (!Token.is(MITokenKind::IntegerLiteral) || !parseUnsigned32(Token.integerValue(), Slot)) {
-      return FailAtToken(Token, "expected metadata id after '!'");
-    }
-    if (Advance())
-      return true;
-    if (!Token.is(MITokenKind::Equal))
-      return FailAtToken(Token, "expected '='");
-    if (Advance())
-      return true;
-
-    const bool IsDistinct = Token.isKeyword("distinct");
-    if (IsDistinct && Advance())
-      return true;
-    if (!Token.is(MITokenKind::Exclaim))
-      return FailAtToken(Token, "expected a metadata node");
-    if (Advance())
-      return true;
-    if (!Token.is(MITokenKind::LeftBrace))
-      return FailAtToken(Token, "expected '{' here");
-    if (Advance())
-      return true;
-
-    std::vector<ParsedElement> Elements;
-    if (!Token.is(MITokenKind::RightBrace)) {
-      while (true) {
-        if (Token.hasStringValue() && Token.stringValue() == "null") {
-          Elements.push_back({.Kind = ParsedElementKind::Null,
-                              .Reference = 0,
-                              .String = {},
-                              .Range = TranslateRange(*DefinitionNode, Token.range())});
-        } else {
-          if (!Token.is(MITokenKind::Exclaim))
-            return FailAtToken(Token, "expected '!' here");
-          const TextRange ReferenceRange = TranslateRange(*DefinitionNode, Token.range());
-          if (Advance())
-            return true;
-
-          if (Token.is(MITokenKind::StringConstant)) {
-            Elements.push_back({.Kind = ParsedElementKind::String,
-                                .Reference = 0,
-                                .String = std::string(Token.stringValue()),
-                                .Range = TranslateRange(*DefinitionNode, Token.range())});
-          } else {
-            std::uint32_t Reference = 0;
-            if (!Token.is(MITokenKind::IntegerLiteral) ||
-                !parseUnsigned32(Token.integerValue(), Reference)) {
-              return FailAtToken(Token, "expected metadata id after '!'");
-            }
-            Elements.push_back({.Kind = ParsedElementKind::Reference,
-                                .Reference = Reference,
-                                .String = {},
-                                .Range = ReferenceRange});
-          }
-        }
-        if (Advance())
-          return true;
-        if (!Token.is(MITokenKind::Comma))
-          break;
-        if (Advance())
-          return true;
-      }
-    }
-    if (!Token.is(MITokenKind::RightBrace))
-      return FailAtToken(Token, "expected end of metadata node");
-    if (Advance())
-      return true;
-    if (!Token.is(MITokenKind::EndOfFile))
-      return FailAtToken(Token, "expected end of metadata node");
-    if (!Slots.insert(Slot).second)
-      return FailAtToken(Token, "Metadata id is already used");
-
-    Definitions.push_back({.Node = DefinitionNode,
-                           .Slot = Slot,
-                           .IsDistinct = IsDistinct,
-                           .Elements = std::move(Elements)});
-    Context.Metadata.push_back(
-        {.TextID = Slot, .Reference = MachineMetadataReference::machineFunction(Slot)});
-  }
-
-  for (const Definition &Definition : Definitions) {
-    MachineMetadataNode NewNode{
-        .Slot = Definition.Slot,
-        .IsDistinct = Definition.IsDistinct,
-        .Elements = {},
-    };
-    for (const ParsedElement &Element : Definition.Elements) {
-      if (Element.Kind == ParsedElementKind::Null) {
-        NewNode.Elements.push_back(MachineMetadataElement::null());
-        continue;
-      }
-      if (Element.Kind == ParsedElementKind::String) {
-        NewNode.Elements.push_back(MachineMetadataElement::string(Element.String));
-        continue;
-      }
-
-      MachineMetadataReference Reference;
-      if (ActiveDocument->EmbeddedIR != std::nullopt &&
-          ActiveDocument->EmbeddedIR->metadata(std::to_string(Element.Reference)) != nullptr) {
-        Reference = MachineMetadataReference::embeddedIR(Element.Reference);
-      } else if (Slots.contains(Element.Reference)) {
-        Reference = MachineMetadataReference::machineFunction(Element.Reference);
-      } else {
-        return fail(Element.Range,
-                    "use of undefined metadata '!" + std::to_string(Element.Reference) + "'");
-      }
-      auto Resolved = MachineMetadataElement::reference(Reference);
-      if (!Resolved)
-        return importError(Element.Range, Resolved.error());
-      NewNode.Elements.push_back(std::move(*Resolved));
-    }
-    auto AddResult = Function.metadata().addNode(std::move(NewNode));
-    if (!AddResult)
-      return importError(Definition.Node->range(), AddResult.error());
-  }
-  return false;
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRMetadataTextParser.cpp b/backend/lib/MIR/MIRMetadataTextParser.cpp
deleted file mode 100644
index 7875b06..0000000
--- a/backend/lib/MIR/MIRMetadataTextParser.cpp
+++ /dev/null
@@ -1,259 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "MIRMetadataTextParser.h"
-
-#include "MIRParserUtilities.h"
-#include "rcc/MIR/MIDebugSyntax.h"
-
-#include <cstdint>
-#include <limits>
-#include <optional>
-#include <string>
-#include <string_view>
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-
-using parser_detail::parseSigned;
-using parser_detail::parseUnsigned;
-using parser_detail::parseUnsigned32;
-
-Expected<void> MetadataTextParser::expect(MITokenKind Kind, std::string_view Description) {
-  if (consume(Kind))
-    return {};
-  return makeUnexpected(ErrorCode::ParseError,
-                        "expected " + std::string(Description) + " in MIR metadata scalar");
-}
-
-Expected<void> MetadataTextParser::finish() {
-  while (consume(MITokenKind::Newline)) {
-  }
-  if (Lexer.failed()) {
-    if (!Lexer.diagnostics().empty()) {
-      return makeUnexpected(ErrorCode::ParseError,
-                            std::string(Lexer.diagnostics().front().Message));
-    }
-    return makeUnexpected(ErrorCode::ParseError, "invalid MIR metadata scalar");
-  }
-  if (!at(MITokenKind::EndOfFile))
-    return makeUnexpected(ErrorCode::ParseError, "unexpected trailing MIR metadata tokens");
-  return {};
-}
-
-Expected<MachineMetadataReference> MetadataTextParser::parseReference() {
-  if (auto Exclaim = expect(MITokenKind::Exclaim, "'!' before a metadata slot"); !Exclaim)
-    return std::unexpected(Exclaim.error());
-  if (!at(MITokenKind::IntegerLiteral))
-    return makeUnexpected(ErrorCode::ParseError, "expected a 32-bit metadata slot");
-  std::uint32_t Slot = 0;
-  if (!parseUnsigned32(token().integerValue(), Slot))
-    return makeUnexpected(ErrorCode::ParseError, "metadata slot is outside the 32-bit range");
-  advance();
-  return Resolve(Slot);
-}
-
-Expected<MachineMetadataReference> MetadataTextParser::parseReferenceOnly() {
-  auto Reference = parseReference();
-  if (!Reference)
-    return std::unexpected(Reference.error());
-  if (auto Finished = finish(); !Finished)
-    return std::unexpected(Finished.error());
-  return Reference;
-}
-
-Expected<MachineDIExpression> MetadataTextParser::parseExpression() {
-  if (!at(MITokenKind::MetadataKeyword) || !token().isMetadataKeyword("!DIExpression")) {
-    return makeUnexpected(ErrorCode::ParseError, "expected an inline !DIExpression");
-  }
-  advance();
-  if (auto Left = expect(MITokenKind::LeftParen, "'(' after !DIExpression"); !Left)
-    return std::unexpected(Left.error());
-  std::vector<std::uint64_t> Elements;
-  while (!at(MITokenKind::RightParen)) {
-    if (at(MITokenKind::Identifier)) {
-      const auto Opcode = parseDIExpressionOpcodeName(token().stringValue());
-      const auto Encoding = parseDIExpressionAttributeEncodingName(token().stringValue());
-      if (!Opcode && !Encoding)
-        return makeUnexpected(ErrorCode::ParseError,
-                              invalidDIExpressionElementMessage(token().stringValue()));
-      Elements.push_back(Opcode ? *Opcode : *Encoding);
-      advance();
-    } else if (at(MITokenKind::IntegerLiteral)) {
-      std::int64_t Signed = 0;
-      std::uint64_t Unsigned = 0;
-      if (parseSigned(token().integerValue(), Signed))
-        Elements.push_back(static_cast<std::uint64_t>(Signed));
-      else if (parseUnsigned(token().integerValue(), Unsigned))
-        Elements.push_back(Unsigned);
-      else
-        return makeUnexpected(ErrorCode::ParseError, "DIExpression integer exceeds 64 bits");
-      advance();
-    } else {
-      return makeUnexpected(ErrorCode::ParseError, "expected a DIExpression opcode or integer");
-    }
-    if (!consume(MITokenKind::Comma))
-      break;
-  }
-  if (auto Right = expect(MITokenKind::RightParen, "')' after !DIExpression"); !Right)
-    return std::unexpected(Right.error());
-  return MachineDIExpression(std::move(Elements));
-}
-
-Expected<MachineMetadataValue> MetadataTextParser::parseValue() {
-  MachineMetadataValue Value;
-  if (at(MITokenKind::Exclaim)) {
-    auto Reference = parseReference();
-    if (!Reference)
-      return std::unexpected(Reference.error());
-    auto Created = MachineMetadataValue::reference(*Reference);
-    if (!Created)
-      return std::unexpected(Created.error());
-    Value = std::move(*Created);
-  } else {
-    auto Expression = parseExpression();
-    if (!Expression)
-      return std::unexpected(Expression.error());
-    Value = MachineMetadataValue::expression(std::move(*Expression));
-  }
-  if (auto Finished = finish(); !Finished)
-    return std::unexpected(Finished.error());
-  return Value;
-}
-
-Expected<void>
-MetadataTextParser::parseDILocation(std::vector<MachineDILocationFrame> &Frames,
-                                    std::optional<MachineMetadataReference> &Terminal) {
-  if (!at(MITokenKind::MetadataKeyword) || !token().isMetadataKeyword("!DILocation")) {
-    return makeUnexpected(ErrorCode::ParseError, "expected an inline !DILocation");
-  }
-  advance();
-  if (auto Left = expect(MITokenKind::LeftParen, "'(' after !DILocation"); !Left)
-    return Left;
-
-  MachineDILocationFrame Frame;
-  bool HasLine = false;
-  bool HasScope = false;
-  std::vector<MachineDILocationFrame> NestedFrames;
-  std::optional<MachineMetadataReference> NestedTerminal;
-  std::unordered_set<std::string> Seen;
-  while (!at(MITokenKind::RightParen)) {
-    if (!at(MITokenKind::Identifier))
-      return makeUnexpected(ErrorCode::ParseError, "expected a DILocation field name");
-    const std::string Field(token().stringValue());
-    if (!Seen.insert(Field).second) {
-      return makeUnexpected(ErrorCode::ParseError, "duplicate DILocation field '" + Field + "'");
-    }
-    advance();
-    if (auto Colon = expect(MITokenKind::Colon, "':' after a DILocation field"); !Colon)
-      return Colon;
-
-    if (Field == "line") {
-      std::uint32_t Value = 0;
-      if (!at(MITokenKind::IntegerLiteral) || !parseUnsigned32(token().integerValue(), Value)) {
-        return makeUnexpected(ErrorCode::ParseError,
-                              "DILocation line must be an unsigned 32-bit integer");
-      }
-      Frame.Line = Value;
-      HasLine = true;
-      advance();
-    } else if (Field == "column") {
-      std::uint64_t Value = 0;
-      if (!at(MITokenKind::IntegerLiteral) || !parseUnsigned(token().integerValue(), Value) ||
-          Value > std::numeric_limits<std::uint16_t>::max()) {
-        return makeUnexpected(ErrorCode::ParseError,
-                              "DILocation column must be an unsigned 16-bit integer");
-      }
-      Frame.Column = static_cast<std::uint16_t>(Value);
-      advance();
-    } else if (Field == "scope") {
-      auto Scope = parseReference();
-      if (!Scope)
-        return std::unexpected(Scope.error());
-      if (Scope->scope() != MachineMetadataScope::EmbeddedIR) {
-        return makeUnexpected(ErrorCode::ParseError,
-                              "DILocation scope must reference embedded LLVM IR metadata");
-      }
-      Frame.Scope = *Scope;
-      HasScope = true;
-    } else if (Field == "inlinedAt") {
-      if (at(MITokenKind::MetadataKeyword) && token().isMetadataKeyword("!DILocation")) {
-        if (auto Nested = parseDILocation(NestedFrames, NestedTerminal); !Nested)
-          return Nested;
-      } else {
-        auto Reference = parseReference();
-        if (!Reference)
-          return std::unexpected(Reference.error());
-        if (Reference->scope() != MachineMetadataScope::EmbeddedIR) {
-          return makeUnexpected(ErrorCode::ParseError,
-                                "DILocation inlinedAt must reference embedded LLVM IR metadata");
-        }
-        NestedTerminal = *Reference;
-      }
-    } else if (Field == "isImplicitCode") {
-      if (!at(MITokenKind::Identifier) ||
-          (token().stringValue() != "true" && token().stringValue() != "false")) {
-        return makeUnexpected(ErrorCode::ParseError,
-                              "DILocation isImplicitCode must be true or false");
-      }
-      Frame.IsImplicitCode = token().stringValue() == "true";
-      advance();
-    } else if (Field == "atomGroup") {
-      std::uint64_t Value = 0;
-      if (!at(MITokenKind::IntegerLiteral) || !parseUnsigned(token().integerValue(), Value) ||
-          Value > MachineDILocation::MaxAtomGroup) {
-        return makeUnexpected(ErrorCode::ParseError, "DILocation atomGroup exceeds 61 bits");
-      }
-      Frame.AtomGroup = Value;
-      advance();
-    } else if (Field == "atomRank") {
-      std::uint64_t Value = 0;
-      if (!at(MITokenKind::IntegerLiteral) || !parseUnsigned(token().integerValue(), Value) ||
-          Value > 7) {
-        return makeUnexpected(ErrorCode::ParseError, "DILocation atomRank exceeds three bits");
-      }
-      Frame.AtomRank = static_cast<std::uint8_t>(Value);
-      advance();
-    } else {
-      return makeUnexpected(ErrorCode::ParseError, "unknown DILocation field '" + Field + "'");
-    }
-    if (!consume(MITokenKind::Comma))
-      break;
-  }
-  if (auto Right = expect(MITokenKind::RightParen, "')' after !DILocation"); !Right)
-    return Right;
-  if (!HasLine || !HasScope)
-    return makeUnexpected(ErrorCode::ParseError, "DILocation requires line and scope fields");
-  Frames.push_back(Frame);
-  Frames.insert(Frames.end(), NestedFrames.begin(), NestedFrames.end());
-  Terminal = NestedTerminal;
-  return {};
-}
-
-Expected<MachineDebugLocation> MetadataTextParser::parseLocation() {
-  MachineDebugLocation Location;
-  if (at(MITokenKind::Exclaim)) {
-    auto Reference = parseReference();
-    if (!Reference)
-      return std::unexpected(Reference.error());
-    auto Created = MachineDebugLocation::reference(*Reference);
-    if (!Created)
-      return std::unexpected(Created.error());
-    Location = std::move(*Created);
-  } else {
-    std::vector<MachineDILocationFrame> Frames;
-    std::optional<MachineMetadataReference> Terminal;
-    if (auto Parsed = parseDILocation(Frames, Terminal); !Parsed)
-      return std::unexpected(Parsed.error());
-    auto Created = MachineDILocation::create(std::move(Frames), Terminal);
-    if (!Created)
-      return std::unexpected(Created.error());
-    Location = MachineDebugLocation::inlineLocation(std::move(*Created));
-  }
-  if (auto Finished = finish(); !Finished)
-    return std::unexpected(Finished.error());
-  return Location;
-}
-
-} // namespace rcc::mir
diff --git a/backend/lib/MIR/MIRMetadataTextParser.h b/backend/lib/MIR/MIRMetadataTextParser.h
deleted file mode 100644
index 032523d..0000000
--- a/backend/lib/MIR/MIRMetadataTextParser.h
+++ /dev/null
@@ -1,74 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-// NOLINTNEXTLINE(llvm-header-guard)
-#ifndef RCC_LIB_MIR_MIRMETADATATEXTPARSER_H
-#define RCC_LIB_MIR_MIRMETADATATEXTPARSER_H
-
-#include "rcc/CodeGen/MachineDebugInfo.h"
-#include "rcc/CodeGen/MachineMetadata.h"
-#include "rcc/MIR/MILexer.h"
-#include "rcc/Support/Error.h"
-
-#include <cstddef>
-#include <cstdint>
-#include <functional>
-#include <optional>
-#include <string>
-#include <string_view>
-#include <utility>
-#include <vector>
-
-namespace rcc::mir {
-
-class MetadataTextParser final {
-public:
-  using Resolver = std::function<Expected<MachineMetadataReference>(std::uint32_t Slot)>;
-
-  MetadataTextParser(std::string Text, Resolver Resolve)
-      : Lexer("MIR metadata scalar", std::move(Text)), Resolve(std::move(Resolve)) {
-    do {
-      Tokens.push_back(Lexer.next());
-    } while (!Tokens.back().isErrorOrEnd());
-  }
-
-  [[nodiscard]] Expected<MachineMetadataReference> parseReferenceOnly();
-  [[nodiscard]] Expected<MachineMetadataValue> parseValue();
-  [[nodiscard]] Expected<MachineDebugLocation> parseLocation();
-
-  [[nodiscard]] const TextRange &diagnosticRange() const noexcept {
-    return token().range();
-  }
-
-private:
-  [[nodiscard]] const MIToken &token() const noexcept {
-    return Tokens[Position];
-  }
-  [[nodiscard]] bool at(MITokenKind Kind) const noexcept {
-    return token().is(Kind);
-  }
-  void advance() noexcept {
-    if (Position + 1U < Tokens.size())
-      ++Position;
-  }
-  [[nodiscard]] bool consume(MITokenKind Kind) noexcept {
-    if (!at(Kind))
-      return false;
-    advance();
-    return true;
-  }
-  [[nodiscard]] Expected<void> expect(MITokenKind Kind, std::string_view Description);
-  [[nodiscard]] Expected<void> finish();
-  [[nodiscard]] Expected<MachineMetadataReference> parseReference();
-  [[nodiscard]] Expected<MachineDIExpression> parseExpression();
-  [[nodiscard]] Expected<void> parseDILocation(std::vector<MachineDILocationFrame> &Frames,
-                                               std::optional<MachineMetadataReference> &Terminal);
-
-  MILexer Lexer;
-  Resolver Resolve;
-  std::vector<MIToken> Tokens;
-  std::size_t Position = 0;
-};
-
-} // namespace rcc::mir
-
-#endif // RCC_LIB_MIR_MIRMETADATATEXTPARSER_H
diff --git a/backend/lib/MIR/MIRParserUtilities.h b/backend/lib/MIR/MIRParserUtilities.h
deleted file mode 100644
index 2f69548..0000000
--- a/backend/lib/MIR/MIRParserUtilities.h
+++ /dev/null
@@ -1,85 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-// NOLINTNEXTLINE(llvm-header-guard)
-#ifndef RCC_LIB_MIR_MIRPARSERUTILITIES_H
-#define RCC_LIB_MIR_MIRPARSERUTILITIES_H
-
-#include <charconv>
-#include <cstdint>
-#include <limits>
-#include <optional>
-#include <string_view>
-
-namespace rcc::mir::parser_detail {
-
-[[nodiscard]] inline std::string_view trim(std::string_view Text) noexcept {
-  while (!Text.empty() && (Text.front() == ' ' || Text.front() == '\t' || Text.front() == '\r' ||
-                           Text.front() == '\n')) {
-    Text.remove_prefix(1);
-  }
-  while (!Text.empty() && (Text.back() == ' ' || Text.back() == '\t' || Text.back() == '\r' ||
-                           Text.back() == '\n')) {
-    Text.remove_suffix(1);
-  }
-  return Text;
-}
-
-[[nodiscard]] inline bool parseUnsigned(std::string_view Text, std::uint64_t &Value) noexcept {
-  Text = trim(Text);
-  int Base = 10;
-  if (Text.starts_with("0x") || Text.starts_with("0X")) {
-    Text.remove_prefix(2);
-    Base = 16;
-  }
-  if (Text.empty())
-    return false;
-  const auto [End, Error] = std::from_chars(Text.data(), Text.data() + Text.size(), Value, Base);
-  return Error == std::errc{} && End == Text.data() + Text.size();
-}
-
-[[nodiscard]] inline bool parseSigned(std::string_view Text, std::int64_t &Value) noexcept {
-  Text = trim(Text);
-  if (Text.empty())
-    return false;
-  const auto [End, Error] = std::from_chars(Text.data(), Text.data() + Text.size(), Value, 10);
-  return Error == std::errc{} && End == Text.data() + Text.size();
-}
-
-[[nodiscard]] inline bool parseUnsigned32(std::string_view Text, std::uint32_t &Value) noexcept {
-  std::uint64_t Wide = 0;
-  if (!parseUnsigned(Text, Wide) || Wide > std::numeric_limits<std::uint32_t>::max())
-    return false;
-  Value = static_cast<std::uint32_t>(Wide);
-  return true;
-}
-
-[[nodiscard]] inline bool parseBool(std::string_view Text, bool &Value) noexcept {
-  if (Text == "true") {
-    Value = true;
-    return true;
-  }
-  if (Text == "false") {
-    Value = false;
-    return true;
-  }
-  return false;
-}
-
-[[nodiscard]] inline std::optional<std::uint32_t>
-parsePrefixedID(std::string_view Text, std::string_view Prefix) noexcept {
-  Text = trim(Text);
-  if (!Text.starts_with(Prefix))
-    return std::nullopt;
-  Text.remove_prefix(Prefix.size());
-  const std::size_t Suffix = Text.find_first_of(". \t");
-  if (Suffix != std::string_view::npos)
-    Text = Text.substr(0, Suffix);
-  std::uint32_t ID = 0;
-  if (!parseUnsigned32(Text, ID))
-    return std::nullopt;
-  return ID;
-}
-
-} // namespace rcc::mir::parser_detail
-
-#endif // RCC_LIB_MIR_MIRPARSERUTILITIES_H