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[AMDGPU] Enable AMDGPUAttributorPass in full LTO #102673

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Merged
merged 1 commit into from
Aug 12, 2024
Merged

[AMDGPU] Enable AMDGPUAttributorPass in full LTO #102673

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7 changes: 7 additions & 0 deletions llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -383,6 +383,11 @@ static cl::opt<bool> EnableHipStdPar(
cl::desc("Enable HIP Standard Parallelism Offload support"), cl::init(false),
cl::Hidden);

static cl::opt<bool>
EnableAMDGPUAttributor("amdgpu-attributor-enable",
cl::desc("Enable AMDGPUAttributorPass"),
cl::init(true), cl::Hidden);

extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeAMDGPUTarget() {
// Register the target
RegisterTargetMachine<R600TargetMachine> X(getTheR600Target());
Expand Down Expand Up @@ -762,6 +767,8 @@ void AMDGPUTargetMachine::registerPassBuilderCallbacks(PassBuilder &PB) {
// module is partitioned for codegen.
if (EnableLowerModuleLDS)
PM.addPass(AMDGPULowerModuleLDSPass(*this));
if (EnableAMDGPUAttributor && Level != OptimizationLevel::O0)
PM.addPass(AMDGPUAttributorPass(*this));
});

PB.registerRegClassFilterParsingCallback(
Expand Down
12 changes: 12 additions & 0 deletions llvm/test/CodeGen/AMDGPU/print-pipeline-passes.ll
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
; RUN: opt -mtriple=amdgcn--amdhsa -S -passes="lto<O0>" -print-pipeline-passes %s -o - | FileCheck --check-prefix=O0 %s
; RUN: opt -mtriple=amdgcn--amdhsa -S -passes="lto<O1>" -print-pipeline-passes %s -o - | FileCheck %s
; RUN: opt -mtriple=amdgcn--amdhsa -S -passes="lto<O2>" -print-pipeline-passes %s -o - | FileCheck %s
; RUN: opt -mtriple=amdgcn--amdhsa -S -passes="lto<O3>" -print-pipeline-passes %s -o - | FileCheck %s

; CHECK: amdgpu-attributor
; O0-NOT: amdgpu-attributor

define amdgpu_kernel void @kernel() {
entry:
ret void
}
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