From 75f1223070749b0df3002226ebbb474c68c71f90 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Sat, 22 Aug 2026 19:16:18 +0800
Subject: [RISCV] Generate MC pseudo lowering

---
 backend/utils/TableGen/Common/CodeGenTarget.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'backend/utils/TableGen/Common/CodeGenTarget.h')

diff --git a/backend/utils/TableGen/Common/CodeGenTarget.h b/backend/utils/TableGen/Common/CodeGenTarget.h
index 6d3e185..43c7383 100644
--- a/backend/utils/TableGen/Common/CodeGenTarget.h
+++ b/backend/utils/TableGen/Common/CodeGenTarget.h
@@ -151,6 +151,24 @@ struct NormalizedMacroFusionRule final {
   bool RequireSecondDestinationTie = false;
 };
 
+enum class NormalizedMCPseudoOperandKind : std::uint8_t {
+  SourceOperand,
+  Register,
+  Immediate,
+};
+
+struct NormalizedMCPseudoOperand final {
+  NormalizedMCPseudoOperandKind Kind = NormalizedMCPseudoOperandKind::SourceOperand;
+  std::uint32_t Value = 0;
+  std::int64_t Immediate = 0;
+};
+
+struct NormalizedMCPseudoExpansion final {
+  std::uint32_t PseudoOpcode = 0;
+  std::uint32_t ResultOpcode = 0;
+  std::vector<NormalizedMCPseudoOperand> Operands;
+};
+
 struct NormalizedEncodingCategory final {
   std::uint32_t ID = 0;
   std::string Symbol;
@@ -393,6 +411,7 @@ struct NormalizedTargetModel final {
   std::vector<NormalizedSelectionRule> SelectionRules;
   std::vector<NormalizedCombinerRule> CombinerRules;
   std::vector<NormalizedMacroFusionRule> MacroFusionRules;
+  std::vector<NormalizedMCPseudoExpansion> MCPseudoExpansions;
 };
 
 [[nodiscard]] std::optional<std::string_view>
@@ -437,6 +456,7 @@ private:
   [[nodiscard]] bool normalizeSelectionRules(NormalizedTargetModel &Result);
   [[nodiscard]] bool normalizeCombinerRules(NormalizedTargetModel &Result);
   [[nodiscard]] bool normalizeMacroFusionRules(NormalizedTargetModel &Result);
+  [[nodiscard]] bool normalizeMCPseudoExpansions(NormalizedTargetModel &Result);
 
   const DescriptionAST &Input;
   std::string SourceName;
-- 
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