From 81afb6570000472c182e5b1f540f69382602aaad Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Mon, 24 Aug 2026 17:30:29 +0800
Subject: [RISCV] Match LLVM emergency spill layout

---
 backend/lib/Target/RISCV/RISCVPipeline.cpp | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

(limited to 'backend/lib/Target/RISCV/RISCVPipeline.cpp')

diff --git a/backend/lib/Target/RISCV/RISCVPipeline.cpp b/backend/lib/Target/RISCV/RISCVPipeline.cpp
index cfa09d0..8ba86ce 100644
--- a/backend/lib/Target/RISCV/RISCVPipeline.cpp
+++ b/backend/lib/Target/RISCV/RISCVPipeline.cpp
@@ -61,7 +61,8 @@ template <typename PassT, typename... ArgumentT>
                                                 const RISCVSubtarget &Subtarget,
                                                 RISCVPipelineOptions Options) {
   auto Added = addSelectedSSAOptimizationPipeline(
-      Pipeline, optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler));
+      Pipeline, optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler,
+                                         Options.DebugPrologueEpilogue));
   if (!Added)
     return std::unexpected(Added.error());
   Added = addPass<PHIEliminationPass>(Pipeline, instrInfo());
@@ -77,7 +78,8 @@ template <typename PassT, typename... ArgumentT>
   if (!Added)
     return std::unexpected(Added.error());
   Added = addPreRegisterAllocationOptimizationPipeline(
-      Pipeline, optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler));
+      Pipeline, optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler,
+                                         Options.DebugPrologueEpilogue));
   if (!Added)
     return std::unexpected(Added.error());
   return addPass<PBQPAllocatorPass>(Pipeline, registerAllocationInfo());
@@ -96,7 +98,9 @@ template <typename PassT, typename... ArgumentT>
   if (!Added)
     return std::unexpected(Added.error());
   return addPostRegisterAllocationPipeline(
-      Pipeline, optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler),
+      Pipeline,
+      optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler,
+                               Options.DebugPrologueEpilogue),
       MachineOptimizationPipelineOptions{.UseTargetCopyInstructions =
                                              Options.UseTargetCopyInstructions});
 }
@@ -128,7 +132,8 @@ Expected<void> addCanonicalPipeline(MachineFunctionPassManager &Pipeline,
   }
   if (!Function.properties().has(MachineFunctionProperty::TiedOpsRewritten)) {
     auto Added = addSelectedSSAOptimizationPipeline(
-        Pipeline, optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler));
+        Pipeline, optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler,
+                                           Options.DebugPrologueEpilogue));
     if (!Added)
       return std::unexpected(Added.error());
     if (!Function.properties().has(MachineFunctionProperty::NoPHIs)) {
@@ -149,7 +154,9 @@ Expected<void> addCanonicalPipeline(MachineFunctionPassManager &Pipeline,
   }
   if (!Function.properties().has(MachineFunctionProperty::NoExecutablePseudos)) {
     auto Added = addPostRegisterAllocationPipeline(
-        Pipeline, optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler),
+        Pipeline,
+        optimizationPipelineInfo(Subtarget, Options.DebugMachineScheduler,
+                                 Options.DebugPrologueEpilogue),
         MachineOptimizationPipelineOptions{.UseTargetCopyInstructions =
                                                Options.UseTargetCopyInstructions});
     if (!Added)
-- 
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