From f7df62b40fd06585bb8c93d001f90e37d3aea3c2 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Wed, 19 Aug 2026 17:16:32 +0800
Subject: [CodeGen] Remove unsupported pre-PEI pseudo expansion

---
 backend/include/rcc/CodeGen/InstructionDescriptor.h  |  1 -
 backend/include/rcc/CodeGen/MachinePseudoExpansion.h | 14 --------------
 backend/include/rcc/CodeGen/TargetPseudoExpansion.h  |  1 -
 3 files changed, 16 deletions(-)

(limited to 'backend/include/rcc/CodeGen')

diff --git a/backend/include/rcc/CodeGen/InstructionDescriptor.h b/backend/include/rcc/CodeGen/InstructionDescriptor.h
index 91881e6..b172cd9 100644
--- a/backend/include/rcc/CodeGen/InstructionDescriptor.h
+++ b/backend/include/rcc/CodeGen/InstructionDescriptor.h
@@ -197,7 +197,6 @@ enum class PseudoOwner : std::uint8_t {
   TwoAddressRewrite,
   PreRAExpansion,
   RegisterAllocator,
-  PrePEIExpansion,
   PrologueEpilogueInsertion,
   PostRAExpansion,
   Finalization,
diff --git a/backend/include/rcc/CodeGen/MachinePseudoExpansion.h b/backend/include/rcc/CodeGen/MachinePseudoExpansion.h
index c30ba50..3c72307 100644
--- a/backend/include/rcc/CodeGen/MachinePseudoExpansion.h
+++ b/backend/include/rcc/CodeGen/MachinePseudoExpansion.h
@@ -38,20 +38,6 @@ private:
   const TargetPseudoExpansionInfo *Info;
 };
 
-class PrePEITargetPseudoExpansionPass final : public MachineFunctionPass {
-public:
-  explicit PrePEITargetPseudoExpansionPass(const TargetPseudoExpansionInfo &Info) noexcept
-      : Info(&Info) {}
-
-  [[nodiscard]] const MachinePassContract &contract() const noexcept override;
-  [[nodiscard]] Expected<MachinePassResult> run(MachineFunction &Function,
-                                                const TargetDescription &Target,
-                                                MachineFunctionAnalysisManager &Analyses) override;
-
-private:
-  const TargetPseudoExpansionInfo *Info;
-};
-
 class ExpandPostRAPseudosPass final : public MachineFunctionPass {
 public:
   explicit ExpandPostRAPseudosPass(const TargetPseudoExpansionInfo &Info) noexcept : Info(&Info) {}
diff --git a/backend/include/rcc/CodeGen/TargetPseudoExpansion.h b/backend/include/rcc/CodeGen/TargetPseudoExpansion.h
index 5135d78..039b221 100644
--- a/backend/include/rcc/CodeGen/TargetPseudoExpansion.h
+++ b/backend/include/rcc/CodeGen/TargetPseudoExpansion.h
@@ -15,7 +15,6 @@ class TargetDescription;
 
 enum class MachinePseudoExpansionPhase : std::uint8_t {
   PreRA,
-  PrePEI,
   PostRA,
   TargetLate,
 };
-- 
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