From f6fdfb8d484b4e52cdb24a94a31b0f00d41a5eb7 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Sat, 15 Aug 2026 00:38:20 +0800
Subject: [GlobalISel] Match LLVM CSE builder result semantics

---
 backend/lib/Target/RISCV/RISCVPipeline.cpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'backend/lib/Target')

diff --git a/backend/lib/Target/RISCV/RISCVPipeline.cpp b/backend/lib/Target/RISCV/RISCVPipeline.cpp
index 9ce9f92..62b77f0 100644
--- a/backend/lib/Target/RISCV/RISCVPipeline.cpp
+++ b/backend/lib/Target/RISCV/RISCVPipeline.cpp
@@ -33,12 +33,13 @@ template <typename PassT, typename... ArgumentT>
 }
 
 [[nodiscard]] Expected<void> addInitialPipeline(MachineFunctionPassManager &Pipeline,
-                                                const RISCVSubtarget &Subtarget) {
+                                                const RISCVSubtarget &Subtarget,
+                                                RISCVPipelineOptions Options) {
   auto Added = addPass<MachineCombinerPass>(Pipeline, machineCombinerInfo(),
                                             MachineCombinerStage::PreLegalizer);
   if (!Added)
     return std::unexpected(Added.error());
-  Added = addPass<Legalizer>(Pipeline, Subtarget.getLegalizerInfo());
+  Added = addPass<Legalizer>(Pipeline, Subtarget.getLegalizerInfo(), Options.Optimization);
   if (!Added)
     return std::unexpected(Added.error());
   Added = addPass<RegBankSelect>(Pipeline, Subtarget.getRegBankInfo());
@@ -67,7 +68,7 @@ template <typename PassT, typename... ArgumentT>
 [[nodiscard]] Expected<void> addCompleteRegistry(MachineFunctionPassManager &Pipeline,
                                                  const RISCVSubtarget &Subtarget,
                                                  RISCVPipelineOptions Options) {
-  auto Added = addInitialPipeline(Pipeline, Subtarget);
+  auto Added = addInitialPipeline(Pipeline, Subtarget, Options);
   if (!Added)
     return std::unexpected(Added.error());
   Added = addSSAExitPipeline(Pipeline);
@@ -92,7 +93,7 @@ Expected<void> addCanonicalPipeline(MachineFunctionPassManager &Pipeline,
                                               MachineCombinerStage::PreLegalizer);
     if (!Added)
       return std::unexpected(Added.error());
-    Added = addPass<Legalizer>(Pipeline, Subtarget.getLegalizerInfo());
+    Added = addPass<Legalizer>(Pipeline, Subtarget.getLegalizerInfo(), Options.Optimization);
     if (!Added)
       return std::unexpected(Added.error());
   }
-- 
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