[llvm] cc19f42 - [AMDGPU][NPM] Port AMDGPUArgumentUsageInfo to NPM (#170886)
via llvm-commits
llvm-commits at lists.llvm.org
Mon Dec 8 07:08:05 PST 2025
Author: Dark Steve
Date: 2025-12-08T20:38:00+05:30
New Revision: cc19f420b99fcda4ab4252fcf857d0e7ed6339e7
URL: https://github.com/llvm/llvm-project/commit/cc19f420b99fcda4ab4252fcf857d0e7ed6339e7
DIFF: https://github.com/llvm/llvm-project/commit/cc19f420b99fcda4ab4252fcf857d0e7ed6339e7.diff
LOG: [AMDGPU][NPM] Port AMDGPUArgumentUsageInfo to NPM (#170886)
Port AMDGPUArgumentUsageInfo analysis to the NPM to fix suboptimal code
generation when NPM is enabled by default.
Previously, DAG.getPass() returns nullptr when using NPM, causing the
argument usage info to be unavailable during ISel. This resulted in
fallback to FixedABIFunctionInfo which assumes all implicit arguments
are needed, generating unnecessary register setup code for entry
functions.
Fixes LLVM::CodeGen/AMDGPU/cc-entry.ll
Changes:
- Split AMDGPUArgumentUsageInfo into a data class and NPM analysis
wrapper
- Update SIISelLowering to use DAG.getMFAM() for NPM path
- Add RequireAnalysisPass in addPreISel() to ensure analysis
availability
This follows the same pattern used for PhysicalRegisterUsageInfo.
Added:
Modified:
llvm/lib/Target/AMDGPU/AMDGPU.h
llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.cpp
llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h
llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
llvm/lib/Target/AMDGPU/AMDGPUPassRegistry.def
llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
llvm/lib/Target/AMDGPU/SIISelLowering.cpp
llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll
Removed:
################################################################################
diff --git a/llvm/lib/Target/AMDGPU/AMDGPU.h b/llvm/lib/Target/AMDGPU/AMDGPU.h
index 5af2a2755cec3..5df11a45b4889 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPU.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPU.h
@@ -536,7 +536,7 @@ void initializeAMDGPUAAWrapperPassPass(PassRegistry&);
ImmutablePass *createAMDGPUExternalAAWrapperPass();
void initializeAMDGPUExternalAAWrapperPass(PassRegistry&);
-void initializeAMDGPUArgumentUsageInfoPass(PassRegistry &);
+void initializeAMDGPUArgumentUsageInfoWrapperLegacyPass(PassRegistry &);
ModulePass *createAMDGPUExportKernelRuntimeHandlesLegacyPass();
void initializeAMDGPUExportKernelRuntimeHandlesLegacyPass(PassRegistry &);
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.cpp
index dda8033f47398..346e257ea7291 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.cpp
@@ -19,7 +19,7 @@ using namespace llvm;
#define DEBUG_TYPE "amdgpu-argument-reg-usage-info"
-INITIALIZE_PASS(AMDGPUArgumentUsageInfo, DEBUG_TYPE,
+INITIALIZE_PASS(AMDGPUArgumentUsageInfoWrapperLegacy, DEBUG_TYPE,
"Argument Register Usage Information Storage", false, true)
void ArgDescriptor::print(raw_ostream &OS,
@@ -42,7 +42,7 @@ void ArgDescriptor::print(raw_ostream &OS,
OS << '\n';
}
-char AMDGPUArgumentUsageInfo::ID = 0;
+char AMDGPUArgumentUsageInfoWrapperLegacy::ID = 0;
const AMDGPUFunctionArgInfo AMDGPUArgumentUsageInfo::ExternFunctionInfo{};
@@ -50,15 +50,6 @@ const AMDGPUFunctionArgInfo AMDGPUArgumentUsageInfo::ExternFunctionInfo{};
const AMDGPUFunctionArgInfo AMDGPUArgumentUsageInfo::FixedABIFunctionInfo
= AMDGPUFunctionArgInfo::fixedABILayout();
-bool AMDGPUArgumentUsageInfo::doInitialization(Module &M) {
- return false;
-}
-
-bool AMDGPUArgumentUsageInfo::doFinalization(Module &M) {
- ArgInfoMap.clear();
- return false;
-}
-
// TODO: Print preload kernargs?
void AMDGPUArgumentUsageInfo::print(raw_ostream &OS, const Module *M) const {
for (const auto &FI : ArgInfoMap) {
@@ -86,6 +77,12 @@ void AMDGPUArgumentUsageInfo::print(raw_ostream &OS, const Module *M) const {
}
}
+bool AMDGPUArgumentUsageInfo::invalidate(Module &M, const PreservedAnalyses &PA,
+ ModuleAnalysisManager::Invalidator &) {
+ auto PAC = PA.getChecker<AMDGPUArgumentUsageAnalysis>();
+ return !PAC.preservedWhenStateless();
+}
+
std::tuple<const ArgDescriptor *, const TargetRegisterClass *, LLT>
AMDGPUFunctionArgInfo::getPreloadedValue(
AMDGPUFunctionArgInfo::PreloadedValue Value) const {
@@ -191,3 +188,10 @@ AMDGPUArgumentUsageInfo::lookupFuncArgInfo(const Function &F) const {
return FixedABIFunctionInfo;
return I->second;
}
+
+AnalysisKey AMDGPUArgumentUsageAnalysis::Key;
+
+AMDGPUArgumentUsageInfo
+AMDGPUArgumentUsageAnalysis::run(Module &M, ModuleAnalysisManager &) {
+ return AMDGPUArgumentUsageInfo();
+}
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h b/llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h
index cb7f63639aee3..f41739ac6c169 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h
@@ -12,11 +12,15 @@
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/CodeGen/Register.h"
+#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"
+#include "llvm/PassRegistry.h"
#include <variant>
namespace llvm {
+void initializeAMDGPUArgumentUsageInfoWrapperLegacyPass(PassRegistry &);
+
class Function;
class LLT;
class raw_ostream;
@@ -168,32 +172,70 @@ struct AMDGPUFunctionArgInfo {
static AMDGPUFunctionArgInfo fixedABILayout();
};
-class AMDGPUArgumentUsageInfo : public ImmutablePass {
+class AMDGPUArgumentUsageInfo {
private:
DenseMap<const Function *, AMDGPUFunctionArgInfo> ArgInfoMap;
public:
- static char ID;
-
static const AMDGPUFunctionArgInfo ExternFunctionInfo;
static const AMDGPUFunctionArgInfo FixedABIFunctionInfo;
- AMDGPUArgumentUsageInfo() : ImmutablePass(ID) { }
+ void print(raw_ostream &OS, const Module *M = nullptr) const;
+
+ void clear() { ArgInfoMap.clear(); }
+
+ void setFuncArgInfo(const Function &F, const AMDGPUFunctionArgInfo &ArgInfo) {
+ ArgInfoMap[&F] = ArgInfo;
+ }
+
+ const AMDGPUFunctionArgInfo &lookupFuncArgInfo(const Function &F) const;
+
+ bool invalidate(Module &M, const PreservedAnalyses &PA,
+ ModuleAnalysisManager::Invalidator &Inv);
+};
+
+class AMDGPUArgumentUsageInfoWrapperLegacy : public ImmutablePass {
+ std::unique_ptr<AMDGPUArgumentUsageInfo> AUIP;
+
+public:
+ static char ID;
+
+ AMDGPUArgumentUsageInfoWrapperLegacy() : ImmutablePass(ID) {
+ initializeAMDGPUArgumentUsageInfoWrapperLegacyPass(
+ *PassRegistry::getPassRegistry());
+ }
+
+ AMDGPUArgumentUsageInfo &getArgUsageInfo() { return *AUIP; }
+ const AMDGPUArgumentUsageInfo &getArgUsageInfo() const { return *AUIP; }
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
}
- bool doInitialization(Module &M) override;
- bool doFinalization(Module &M) override;
+ bool doInitialization(Module &M) override {
+ AUIP = std::make_unique<AMDGPUArgumentUsageInfo>();
+ return false;
+ }
- void print(raw_ostream &OS, const Module *M = nullptr) const override;
+ bool doFinalization(Module &M) override {
+ AUIP->clear();
+ return false;
+ }
- void setFuncArgInfo(const Function &F, const AMDGPUFunctionArgInfo &ArgInfo) {
- ArgInfoMap[&F] = ArgInfo;
+ void print(raw_ostream &OS, const Module *M = nullptr) const override {
+ AUIP->print(OS, M);
}
+};
- const AMDGPUFunctionArgInfo &lookupFuncArgInfo(const Function &F) const;
+class AMDGPUArgumentUsageAnalysis
+ : public AnalysisInfoMixin<AMDGPUArgumentUsageAnalysis> {
+ friend AnalysisInfoMixin<AMDGPUArgumentUsageAnalysis>;
+ static AnalysisKey Key;
+
+public:
+ using Result = AMDGPUArgumentUsageInfo;
+
+ AMDGPUArgumentUsageInfo run(Module &M, ModuleAnalysisManager &);
};
} // end namespace llvm
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
index 8698e816ddbb9..d0835a03a2495 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
@@ -134,7 +134,7 @@ static SDValue stripExtractLoElt(SDValue In) {
INITIALIZE_PASS_BEGIN(AMDGPUDAGToDAGISelLegacy, "amdgpu-isel",
"AMDGPU DAG->DAG Pattern Instruction Selection", false,
false)
-INITIALIZE_PASS_DEPENDENCY(AMDGPUArgumentUsageInfo)
+INITIALIZE_PASS_DEPENDENCY(AMDGPUArgumentUsageInfoWrapperLegacy)
INITIALIZE_PASS_DEPENDENCY(AMDGPUPerfHintAnalysisLegacy)
INITIALIZE_PASS_DEPENDENCY(UniformityInfoWrapperPass)
#ifdef EXPENSIVE_CHECKS
@@ -238,7 +238,7 @@ bool AMDGPUDAGToDAGISelLegacy::runOnMachineFunction(MachineFunction &MF) {
}
void AMDGPUDAGToDAGISelLegacy::getAnalysisUsage(AnalysisUsage &AU) const {
- AU.addRequired<AMDGPUArgumentUsageInfo>();
+ AU.addRequired<AMDGPUArgumentUsageInfoWrapperLegacy>();
AU.addRequired<UniformityInfoWrapperPass>();
#ifdef EXPENSIVE_CHECKS
AU.addRequired<DominatorTreeWrapperPass>();
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUPassRegistry.def b/llvm/lib/Target/AMDGPU/AMDGPUPassRegistry.def
index 46d70c257b75e..f464fbf31c754 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUPassRegistry.def
+++ b/llvm/lib/Target/AMDGPU/AMDGPUPassRegistry.def
@@ -13,6 +13,12 @@
// NOTE: NO INCLUDE GUARD DESIRED!
+#ifndef MODULE_ANALYSIS
+#define MODULE_ANALYSIS(NAME, CREATE_PASS)
+#endif
+MODULE_ANALYSIS("amdgpu-argument-usage", AMDGPUArgumentUsageAnalysis())
+#undef MODULE_ANALYSIS
+
#ifndef MODULE_PASS
#define MODULE_PASS(NAME, CREATE_PASS)
#endif
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp b/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
index e5a35abe6da6b..0894bb41d2aff 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
@@ -17,6 +17,7 @@
#include "AMDGPUTargetMachine.h"
#include "AMDGPU.h"
#include "AMDGPUAliasAnalysis.h"
+#include "AMDGPUArgumentUsageInfo.h"
#include "AMDGPUBarrierLatency.h"
#include "AMDGPUCtorDtorLowering.h"
#include "AMDGPUExportClustering.h"
@@ -575,7 +576,7 @@ extern "C" LLVM_ABI LLVM_EXTERNAL_VISIBILITY void LLVMInitializeAMDGPUTarget() {
initializeAMDGPULowerExecSyncLegacyPass(*PR);
initializeAMDGPUSwLowerLDSLegacyPass(*PR);
initializeAMDGPUAnnotateUniformValuesLegacyPass(*PR);
- initializeAMDGPUArgumentUsageInfoPass(*PR);
+ initializeAMDGPUArgumentUsageInfoWrapperLegacyPass(*PR);
initializeAMDGPUAtomicOptimizerPass(*PR);
initializeAMDGPULowerKernelArgumentsPass(*PR);
initializeAMDGPUPromoteKernelArgumentsPass(*PR);
@@ -2207,6 +2208,9 @@ void AMDGPUCodeGenPassBuilder::addCodeGenPrepare(AddIRPass &addPass) const {
void AMDGPUCodeGenPassBuilder::addPreISel(AddIRPass &addPass) const {
+ // Require AMDGPUArgumentUsageAnalysis so that it's available during ISel.
+ addPass(RequireAnalysisPass<AMDGPUArgumentUsageAnalysis, Module>());
+
if (TM.getOptLevel() > CodeGenOptLevel::None) {
addPass(FlattenCFGPass());
addPass(SinkingPass());
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index ff67fd63ea75e..f206cee0222f9 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -35,6 +35,7 @@
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
+#include "llvm/CodeGen/MachinePassManager.h"
#include "llvm/CodeGen/PseudoSourceValueManager.h"
#include "llvm/CodeGen/SDPatternMatch.h"
#include "llvm/IR/DiagnosticInfo.h"
@@ -3587,11 +3588,17 @@ SDValue SITargetLowering::LowerFormalArguments(
if (IsEntryFunc)
allocateSystemSGPRs(CCInfo, MF, *Info, CallConv, IsGraphics);
- // DAG.getPass() returns nullptr when using new pass manager.
- // TODO: Use DAG.getMFAM() to access analysis result.
if (DAG.getPass()) {
- auto &ArgUsageInfo = DAG.getPass()->getAnalysis<AMDGPUArgumentUsageInfo>();
- ArgUsageInfo.setFuncArgInfo(Fn, Info->getArgInfo());
+ auto &ArgUsageInfo =
+ DAG.getPass()->getAnalysis<AMDGPUArgumentUsageInfoWrapperLegacy>();
+ ArgUsageInfo.getArgUsageInfo().setFuncArgInfo(Fn, Info->getArgInfo());
+ } else if (auto *MFAM = DAG.getMFAM()) {
+ Module &M = *MF.getFunction().getParent();
+ auto *ArgUsageInfo =
+ MFAM->getResult<ModuleAnalysisManagerMachineFunctionProxy>(MF)
+ .getCachedResult<AMDGPUArgumentUsageAnalysis>(M);
+ if (ArgUsageInfo)
+ ArgUsageInfo->setFuncArgInfo(Fn, Info->getArgInfo());
}
unsigned StackArgSize = CCInfo.getStackSize();
@@ -3806,12 +3813,19 @@ void SITargetLowering::passSpecialInputs(
const AMDGPUFunctionArgInfo *CalleeArgInfo =
&AMDGPUArgumentUsageInfo::FixedABIFunctionInfo;
if (const Function *CalleeFunc = CLI.CB->getCalledFunction()) {
- // DAG.getPass() returns nullptr when using new pass manager.
- // TODO: Use DAG.getMFAM() to access analysis result.
if (DAG.getPass()) {
auto &ArgUsageInfo =
- DAG.getPass()->getAnalysis<AMDGPUArgumentUsageInfo>();
- CalleeArgInfo = &ArgUsageInfo.lookupFuncArgInfo(*CalleeFunc);
+ DAG.getPass()->getAnalysis<AMDGPUArgumentUsageInfoWrapperLegacy>();
+ CalleeArgInfo =
+ &ArgUsageInfo.getArgUsageInfo().lookupFuncArgInfo(*CalleeFunc);
+ } else if (auto *MFAM = DAG.getMFAM()) {
+ Module &M = *DAG.getMachineFunction().getFunction().getParent();
+ auto *ArgUsageInfo =
+ MFAM->getResult<ModuleAnalysisManagerMachineFunctionProxy>(
+ DAG.getMachineFunction())
+ .getCachedResult<AMDGPUArgumentUsageAnalysis>(M);
+ if (ArgUsageInfo)
+ CalleeArgInfo = &ArgUsageInfo->lookupFuncArgInfo(*CalleeFunc);
}
}
diff --git a/llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll b/llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll
index 69dfbc2a2ae51..187e2ceb1209b 100644
--- a/llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll
+++ b/llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll
@@ -9,11 +9,11 @@
; RUN: | FileCheck -check-prefix=GCN-O3 %s
-; GCN-O0: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,require<runtime-libcall-info>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp<O0>),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-uniform-intrinsic-combine),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-lower-exec-sync,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(atomic-expand,verify,gc-lowering,lower-constant-intrinsics,unreachableblockelim,ee-instrument<post-inline>,scalarize-masked-mem-intrin,expand-reductions,amdgpu-lower-kernel-arguments),amdgpu-lower-buffer-fat-pointers,amdgpu-lower-intrinsics,cgscc(function(lower-switch,lower-invoke,unreachableblockelim,amdgpu-unify-divergent-exit-nodes,fix-irreducible,unify-loop-exits,StructurizeCFGPass,amdgpu-annotate-uniform,si-annotate-control-flow,amdgpu-rewrite-undef-for-phi,lcssa,require<uniformity>,callbr-prepare,safe-stack,stack-protector,verify)),cgscc(function(machine-function(amdgpu-isel,si-fix-sgpr-copies,si-i1-copies,finalize-isel,localstackalloc))),require<reg-usage>,cgscc(function(machine-function(reg-usage-propagation,phi-node-elimination,two-address-instruction,regallocfast,si-fix-vgpr-copies,remove-redundant-debug-values,fixup-statepoint-caller-saved,prolog-epilog,post-ra-pseudos,si-post-ra-bundler,fentry-insert,xray-instrumentation,patchable-function,si-memory-legalizer,si-insert-waitcnts,si-late-branch-lowering,post-RA-hazard-rec,amdgpu-wait-sgpr-hazards,amdgpu-lower-vgpr-encoding,branch-relaxation,reg-usage-collector,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),free-machine-function))
+; GCN-O0: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,require<runtime-libcall-info>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp<O0>),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-uniform-intrinsic-combine),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-lower-exec-sync,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(atomic-expand,verify,gc-lowering,lower-constant-intrinsics,unreachableblockelim,ee-instrument<post-inline>,scalarize-masked-mem-intrin,expand-reductions,amdgpu-lower-kernel-arguments),amdgpu-lower-buffer-fat-pointers,amdgpu-lower-intrinsics,cgscc(function(lower-switch,lower-invoke,unreachableblockelim)),require<amdgpu-argument-usage>,cgscc(function(amdgpu-unify-divergent-exit-nodes,fix-irreducible,unify-loop-exits,StructurizeCFGPass,amdgpu-annotate-uniform,si-annotate-control-flow,amdgpu-rewrite-undef-for-phi,lcssa,require<uniformity>,callbr-prepare,safe-stack,stack-protector,verify)),cgscc(function(machine-function(amdgpu-isel,si-fix-sgpr-copies,si-i1-copies,finalize-isel,localstackalloc))),require<reg-usage>,cgscc(function(machine-function(reg-usage-propagation,phi-node-elimination,two-address-instruction,regallocfast,si-fix-vgpr-copies,remove-redundant-debug-values,fixup-statepoint-caller-saved,prolog-epilog,post-ra-pseudos,si-post-ra-bundler,fentry-insert,xray-instrumentation,patchable-function,si-memory-legalizer,si-insert-waitcnts,si-late-branch-lowering,post-RA-hazard-rec,amdgpu-wait-sgpr-hazards,amdgpu-lower-vgpr-encoding,branch-relaxation,reg-usage-collector,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),free-machine-function))
-; GCN-O2: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,require<runtime-libcall-info>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp<O2>),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-image-intrinsic-opt,amdgpu-uniform-intrinsic-combine),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-lower-exec-sync,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(amdgpu-atomic-optimizer,atomic-expand,amdgpu-promote-alloca,separate-const-offset-from-gep<>,slsr,early-cse<>,nary-reassociate,early-cse<>,amdgpu-codegenprepare,loop-mssa(licm<allowspeculation>),verify,loop-mssa(canon-freeze,loop-reduce),mergeicmps,expand-memcmp,gc-lowering,lower-constant-intrinsics,unreachableblockelim,consthoist,replace-with-veclib,partially-inline-libcalls,ee-instrument<post-inline>,scalarize-masked-mem-intrin,expand-reductions,early-cse<>),amdgpu-preload-kernel-arguments,function(amdgpu-lower-kernel-arguments,codegenprepare,load-store-vectorizer),amdgpu-lower-buffer-fat-pointers,amdgpu-lower-intrinsics,cgscc(function(lower-switch,lower-invoke,unreachableblockelim,flatten-cfg,sink,amdgpu-late-codegenprepare,amdgpu-unify-divergent-exit-nodes,fix-irreducible,unify-loop-exits,StructurizeCFGPass,amdgpu-annotate-uniform,si-annotate-control-flow,amdgpu-rewrite-undef-for-phi,lcssa)),amdgpu-perf-hint,cgscc(function(require<uniformity>,objc-arc-contract,callbr-prepare,safe-stack,stack-protector,verify)),cgscc(function(machine-function(amdgpu-isel,si-fix-sgpr-copies,si-i1-copies,finalize-isel,early-tailduplication,opt-phis,stack-coloring,localstackalloc,dead-mi-elimination,early-machinelicm,machine-cse,machine-sink,peephole-opt,dead-mi-elimination,si-fold-operands,gcn-dpp-combine,si-load-store-opt,si-peephole-sdwa,early-machinelicm,machine-cse,si-fold-operands,dead-mi-elimination,si-shrink-instructions))),require<reg-usage>,cgscc(function(machine-function(reg-usage-propagation,amdgpu-prepare-agpr-alloc,detect-dead-lanes,dead-mi-elimination,init-undef,process-imp-defs,unreachable-mbb-elimination,require<live-vars>,si-opt-vgpr-liverange,require<machine-loops>,phi-node-elimination,si-lower-control-flow,two-address-instruction,register-coalescer,rename-independent-subregs,amdgpu-rewrite-partial-reg-uses,machine-scheduler,amdgpu-pre-ra-optimizations,si-wqm,si-optimize-exec-masking-pre-ra,si-form-memory-clauses,amdgpu-pre-ra-long-branch-reg,greedy<sgpr>,virt-reg-rewriter<no-clear-vregs>,stack-slot-coloring,si-lower-sgpr-spills,si-pre-allocate-wwm-regs,greedy<wwm>,si-lower-wwm-copies,virt-reg-rewriter<no-clear-vregs>,amdgpu-reserve-wwm-regs,greedy<vgpr>,amdgpu-nsa-reassign,virt-reg-rewriter,amdgpu-mark-last-scratch-load,machine-cp,machinelicm,si-fix-vgpr-copies,si-optimize-exec-masking,remove-redundant-debug-values,fixup-statepoint-caller-saved,postra-machine-sink,shrink-wrap,prolog-epilog,branch-folder,tailduplication,machine-latecleanup,machine-cp,post-ra-pseudos,si-shrink-instructions,si-post-ra-bundler,postmisched,block-placement,fentry-insert,xray-instrumentation,patchable-function,gcn-create-vopd,si-memory-legalizer,si-insert-waitcnts,si-late-branch-lowering,si-pre-emit-peephole,post-RA-hazard-rec,amdgpu-wait-sgpr-hazards,amdgpu-lower-vgpr-encoding,amdgpu-insert-delay-alu,branch-relaxation,reg-usage-collector,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),free-machine-function))
+; GCN-O2: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,require<runtime-libcall-info>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp<O2>),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-image-intrinsic-opt,amdgpu-uniform-intrinsic-combine),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-lower-exec-sync,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(amdgpu-atomic-optimizer,atomic-expand,amdgpu-promote-alloca,separate-const-offset-from-gep<>,slsr,early-cse<>,nary-reassociate,early-cse<>,amdgpu-codegenprepare,loop-mssa(licm<allowspeculation>),verify,loop-mssa(canon-freeze,loop-reduce),mergeicmps,expand-memcmp,gc-lowering,lower-constant-intrinsics,unreachableblockelim,consthoist,replace-with-veclib,partially-inline-libcalls,ee-instrument<post-inline>,scalarize-masked-mem-intrin,expand-reductions,early-cse<>),amdgpu-preload-kernel-arguments,function(amdgpu-lower-kernel-arguments,codegenprepare,load-store-vectorizer),amdgpu-lower-buffer-fat-pointers,amdgpu-lower-intrinsics,cgscc(function(lower-switch,lower-invoke,unreachableblockelim)),require<amdgpu-argument-usage>,cgscc(function(flatten-cfg,sink,amdgpu-late-codegenprepare,amdgpu-unify-divergent-exit-nodes,fix-irreducible,unify-loop-exits,StructurizeCFGPass,amdgpu-annotate-uniform,si-annotate-control-flow,amdgpu-rewrite-undef-for-phi,lcssa)),amdgpu-perf-hint,cgscc(function(require<uniformity>,objc-arc-contract,callbr-prepare,safe-stack,stack-protector,verify)),cgscc(function(machine-function(amdgpu-isel,si-fix-sgpr-copies,si-i1-copies,finalize-isel,early-tailduplication,opt-phis,stack-coloring,localstackalloc,dead-mi-elimination,early-machinelicm,machine-cse,machine-sink,peephole-opt,dead-mi-elimination,si-fold-operands,gcn-dpp-combine,si-load-store-opt,si-peephole-sdwa,early-machinelicm,machine-cse,si-fold-operands,dead-mi-elimination,si-shrink-instructions))),require<reg-usage>,cgscc(function(machine-function(reg-usage-propagation,amdgpu-prepare-agpr-alloc,detect-dead-lanes,dead-mi-elimination,init-undef,process-imp-defs,unreachable-mbb-elimination,require<live-vars>,si-opt-vgpr-liverange,require<machine-loops>,phi-node-elimination,si-lower-control-flow,two-address-instruction,register-coalescer,rename-independent-subregs,amdgpu-rewrite-partial-reg-uses,machine-scheduler,amdgpu-pre-ra-optimizations,si-wqm,si-optimize-exec-masking-pre-ra,si-form-memory-clauses,amdgpu-pre-ra-long-branch-reg,greedy<sgpr>,virt-reg-rewriter<no-clear-vregs>,stack-slot-coloring,si-lower-sgpr-spills,si-pre-allocate-wwm-regs,greedy<wwm>,si-lower-wwm-copies,virt-reg-rewriter<no-clear-vregs>,amdgpu-reserve-wwm-regs,greedy<vgpr>,amdgpu-nsa-reassign,virt-reg-rewriter,amdgpu-mark-last-scratch-load,machine-cp,machinelicm,si-fix-vgpr-copies,si-optimize-exec-masking,remove-redundant-debug-values,fixup-statepoint-caller-saved,postra-machine-sink,shrink-wrap,prolog-epilog,branch-folder,tailduplication,machine-latecleanup,machine-cp,post-ra-pseudos,si-shrink-instructions,si-post-ra-bundler,postmisched,block-placement,fentry-insert,xray-instrumentation,patchable-function,gcn-create-vopd,si-memory-legalizer,si-insert-waitcnts,si-late-branch-lowering,si-pre-emit-peephole,post-RA-hazard-rec,amdgpu-wait-sgpr-hazards,amdgpu-lower-vgpr-encoding,amdgpu-insert-delay-alu,branch-relaxation,reg-usage-collector,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),free-machine-function))
-; GCN-O3: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,require<runtime-libcall-info>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp<O3>),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-image-intrinsic-opt,amdgpu-uniform-intrinsic-combine),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-lower-exec-sync,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(amdgpu-atomic-optimizer,atomic-expand,amdgpu-promote-alloca,separate-const-offset-from-gep<>,slsr,gvn<>,nary-reassociate,early-cse<>,amdgpu-codegenprepare,loop-mssa(licm<allowspeculation>),verify,loop-mssa(canon-freeze,loop-reduce),mergeicmps,expand-memcmp,gc-lowering,lower-constant-intrinsics,unreachableblockelim,consthoist,replace-with-veclib,partially-inline-libcalls,ee-instrument<post-inline>,scalarize-masked-mem-intrin,expand-reductions,gvn<>),amdgpu-preload-kernel-arguments,function(amdgpu-lower-kernel-arguments,codegenprepare,load-store-vectorizer),amdgpu-lower-buffer-fat-pointers,amdgpu-lower-intrinsics,cgscc(function(lower-switch,lower-invoke,unreachableblockelim,flatten-cfg,sink,amdgpu-late-codegenprepare,amdgpu-unify-divergent-exit-nodes,fix-irreducible,unify-loop-exits,StructurizeCFGPass,amdgpu-annotate-uniform,si-annotate-control-flow,amdgpu-rewrite-undef-for-phi,lcssa)),amdgpu-perf-hint,cgscc(function(require<uniformity>,objc-arc-contract,callbr-prepare,safe-stack,stack-protector,verify)),cgscc(function(machine-function(amdgpu-isel,si-fix-sgpr-copies,si-i1-copies,finalize-isel,early-tailduplication,opt-phis,stack-coloring,localstackalloc,dead-mi-elimination,early-machinelicm,machine-cse,machine-sink,peephole-opt,dead-mi-elimination,si-fold-operands,gcn-dpp-combine,si-load-store-opt,si-peephole-sdwa,early-machinelicm,machine-cse,si-fold-operands,dead-mi-elimination,si-shrink-instructions))),require<reg-usage>,cgscc(function(machine-function(reg-usage-propagation,amdgpu-prepare-agpr-alloc,detect-dead-lanes,dead-mi-elimination,init-undef,process-imp-defs,unreachable-mbb-elimination,require<live-vars>,si-opt-vgpr-liverange,require<machine-loops>,phi-node-elimination,si-lower-control-flow,two-address-instruction,register-coalescer,rename-independent-subregs,amdgpu-rewrite-partial-reg-uses,machine-scheduler,amdgpu-pre-ra-optimizations,si-wqm,si-optimize-exec-masking-pre-ra,si-form-memory-clauses,amdgpu-pre-ra-long-branch-reg,greedy<sgpr>,virt-reg-rewriter<no-clear-vregs>,stack-slot-coloring,si-lower-sgpr-spills,si-pre-allocate-wwm-regs,greedy<wwm>,si-lower-wwm-copies,virt-reg-rewriter<no-clear-vregs>,amdgpu-reserve-wwm-regs,greedy<vgpr>,amdgpu-nsa-reassign,virt-reg-rewriter,amdgpu-mark-last-scratch-load,machine-cp,machinelicm,si-fix-vgpr-copies,si-optimize-exec-masking,remove-redundant-debug-values,fixup-statepoint-caller-saved,postra-machine-sink,shrink-wrap,prolog-epilog,branch-folder,tailduplication,machine-latecleanup,machine-cp,post-ra-pseudos,si-shrink-instructions,si-post-ra-bundler,postmisched,block-placement,fentry-insert,xray-instrumentation,patchable-function,gcn-create-vopd,si-memory-legalizer,si-insert-waitcnts,si-late-branch-lowering,si-pre-emit-peephole,post-RA-hazard-rec,amdgpu-wait-sgpr-hazards,amdgpu-lower-vgpr-encoding,amdgpu-insert-delay-alu,branch-relaxation,reg-usage-collector,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),free-machine-function))
+; GCN-O3: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,require<runtime-libcall-info>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp<O3>),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-image-intrinsic-opt,amdgpu-uniform-intrinsic-combine),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-lower-exec-sync,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(amdgpu-atomic-optimizer,atomic-expand,amdgpu-promote-alloca,separate-const-offset-from-gep<>,slsr,gvn<>,nary-reassociate,early-cse<>,amdgpu-codegenprepare,loop-mssa(licm<allowspeculation>),verify,loop-mssa(canon-freeze,loop-reduce),mergeicmps,expand-memcmp,gc-lowering,lower-constant-intrinsics,unreachableblockelim,consthoist,replace-with-veclib,partially-inline-libcalls,ee-instrument<post-inline>,scalarize-masked-mem-intrin,expand-reductions,gvn<>),amdgpu-preload-kernel-arguments,function(amdgpu-lower-kernel-arguments,codegenprepare,load-store-vectorizer),amdgpu-lower-buffer-fat-pointers,amdgpu-lower-intrinsics,cgscc(function(lower-switch,lower-invoke,unreachableblockelim)),require<amdgpu-argument-usage>,cgscc(function(flatten-cfg,sink,amdgpu-late-codegenprepare,amdgpu-unify-divergent-exit-nodes,fix-irreducible,unify-loop-exits,StructurizeCFGPass,amdgpu-annotate-uniform,si-annotate-control-flow,amdgpu-rewrite-undef-for-phi,lcssa)),amdgpu-perf-hint,cgscc(function(require<uniformity>,objc-arc-contract,callbr-prepare,safe-stack,stack-protector,verify)),cgscc(function(machine-function(amdgpu-isel,si-fix-sgpr-copies,si-i1-copies,finalize-isel,early-tailduplication,opt-phis,stack-coloring,localstackalloc,dead-mi-elimination,early-machinelicm,machine-cse,machine-sink,peephole-opt,dead-mi-elimination,si-fold-operands,gcn-dpp-combine,si-load-store-opt,si-peephole-sdwa,early-machinelicm,machine-cse,si-fold-operands,dead-mi-elimination,si-shrink-instructions))),require<reg-usage>,cgscc(function(machine-function(reg-usage-propagation,amdgpu-prepare-agpr-alloc,detect-dead-lanes,dead-mi-elimination,init-undef,process-imp-defs,unreachable-mbb-elimination,require<live-vars>,si-opt-vgpr-liverange,require<machine-loops>,phi-node-elimination,si-lower-control-flow,two-address-instruction,register-coalescer,rename-independent-subregs,amdgpu-rewrite-partial-reg-uses,machine-scheduler,amdgpu-pre-ra-optimizations,si-wqm,si-optimize-exec-masking-pre-ra,si-form-memory-clauses,amdgpu-pre-ra-long-branch-reg,greedy<sgpr>,virt-reg-rewriter<no-clear-vregs>,stack-slot-coloring,si-lower-sgpr-spills,si-pre-allocate-wwm-regs,greedy<wwm>,si-lower-wwm-copies,virt-reg-rewriter<no-clear-vregs>,amdgpu-reserve-wwm-regs,greedy<vgpr>,amdgpu-nsa-reassign,virt-reg-rewriter,amdgpu-mark-last-scratch-load,machine-cp,machinelicm,si-fix-vgpr-copies,si-optimize-exec-masking,remove-redundant-debug-values,fixup-statepoint-caller-saved,postra-machine-sink,shrink-wrap,prolog-epilog,branch-folder,tailduplication,machine-latecleanup,machine-cp,post-ra-pseudos,si-shrink-instructions,si-post-ra-bundler,postmisched,block-placement,fentry-insert,xray-instrumentation,patchable-function,gcn-create-vopd,si-memory-legalizer,si-insert-waitcnts,si-late-branch-lowering,si-pre-emit-peephole,post-RA-hazard-rec,amdgpu-wait-sgpr-hazards,amdgpu-lower-vgpr-encoding,amdgpu-insert-delay-alu,branch-relaxation,reg-usage-collector,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),free-machine-function))
define void @empty() {
ret void
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