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// 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{
.DefaultPointerSizeInBits = Context.DefaultPointerSizeInBits,
.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 jump table kind '" + std::string(KindName) + "'");
}
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
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