[llvm-branch-commits] [llvm] [CodeGen][NPM] Port InitUndef to NPM (PR #138495)
Akshat Oke via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Mon May 12 02:11:52 PDT 2025
https://github.com/optimisan updated https://github.com/llvm/llvm-project/pull/138495
>From 476894ffa1fed64724b91c8b1db9391e09295be6 Mon Sep 17 00:00:00 2001
From: Akshat Oke <Akshat.Oke at amd.com>
Date: Mon, 5 May 2025 08:47:42 +0000
Subject: [PATCH 1/2] [CodeGen][NPM] Port InitUndef to NPM
---
llvm/include/llvm/CodeGen/InitUndef.h | 24 +++++++++
llvm/include/llvm/InitializePasses.h | 2 +-
llvm/include/llvm/Passes/CodeGenPassBuilder.h | 1 +
.../llvm/Passes/MachinePassRegistry.def | 2 +-
llvm/lib/CodeGen/CodeGen.cpp | 2 +-
llvm/lib/CodeGen/InitUndef.cpp | 50 +++++++++++++------
llvm/lib/Passes/PassBuilder.cpp | 1 +
llvm/test/CodeGen/AArch64/init-undef.mir | 3 ++
llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll | 4 +-
.../rvv/handle-noreg-with-implicit-def.mir | 2 +
.../rvv/subregister-undef-early-clobber.mir | 1 +
.../RISCV/rvv/undef-earlyclobber-chain.mir | 1 +
12 files changed, 73 insertions(+), 20 deletions(-)
create mode 100644 llvm/include/llvm/CodeGen/InitUndef.h
diff --git a/llvm/include/llvm/CodeGen/InitUndef.h b/llvm/include/llvm/CodeGen/InitUndef.h
new file mode 100644
index 0000000000000..7274824a74905
--- /dev/null
+++ b/llvm/include/llvm/CodeGen/InitUndef.h
@@ -0,0 +1,24 @@
+//===- llvm/CodeGen/InitUndef.h --------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_INITUNDEF_H
+#define LLVM_CODEGEN_INITUNDEF_H
+
+#include "llvm/CodeGen/MachinePassManager.h"
+
+namespace llvm {
+
+class InitUndefPass : public PassInfoMixin<InitUndefPass> {
+public:
+ PreservedAnalyses run(MachineFunction &MF,
+ MachineFunctionAnalysisManager &MFAM);
+};
+
+} // namespace llvm
+
+#endif // LLVM_CODEGEN_INITUNDEF_H
diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index 5a282d17b72c8..a3ebd2a6d15ca 100644
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -312,7 +312,7 @@ void initializeTargetTransformInfoWrapperPassPass(PassRegistry &);
void initializeTwoAddressInstructionLegacyPassPass(PassRegistry &);
void initializeTypeBasedAAWrapperPassPass(PassRegistry &);
void initializeTypePromotionLegacyPass(PassRegistry &);
-void initializeInitUndefPass(PassRegistry &);
+void initializeInitUndefLegacyPass(PassRegistry &);
void initializeUniformityInfoWrapperPassPass(PassRegistry &);
void initializeUnifyLoopExitsLegacyPassPass(PassRegistry &);
void initializeUnpackMachineBundlesPass(PassRegistry &);
diff --git a/llvm/include/llvm/Passes/CodeGenPassBuilder.h b/llvm/include/llvm/Passes/CodeGenPassBuilder.h
index 29bc432ba3d5d..a3f439119b7da 100644
--- a/llvm/include/llvm/Passes/CodeGenPassBuilder.h
+++ b/llvm/include/llvm/Passes/CodeGenPassBuilder.h
@@ -43,6 +43,7 @@
#include "llvm/CodeGen/GlobalMerge.h"
#include "llvm/CodeGen/GlobalMergeFunctions.h"
#include "llvm/CodeGen/IndirectBrExpand.h"
+#include "llvm/CodeGen/InitUndef.h"
#include "llvm/CodeGen/InterleavedAccess.h"
#include "llvm/CodeGen/InterleavedLoadCombine.h"
#include "llvm/CodeGen/JMCInstrumenter.h"
diff --git a/llvm/include/llvm/Passes/MachinePassRegistry.def b/llvm/include/llvm/Passes/MachinePassRegistry.def
index c69573ee3ed97..436b26852ce90 100644
--- a/llvm/include/llvm/Passes/MachinePassRegistry.def
+++ b/llvm/include/llvm/Passes/MachinePassRegistry.def
@@ -148,6 +148,7 @@ MACHINE_FUNCTION_PASS("early-tailduplication", EarlyTailDuplicatePass())
MACHINE_FUNCTION_PASS("fentry-insert", FEntryInserterPass())
MACHINE_FUNCTION_PASS("finalize-isel", FinalizeISelPass())
MACHINE_FUNCTION_PASS("fixup-statepoint-caller-saved", FixupStatepointCallerSavedPass())
+MACHINE_FUNCTION_PASS("init-undef", InitUndefPass())
MACHINE_FUNCTION_PASS("localstackalloc", LocalStackSlotAllocationPass())
MACHINE_FUNCTION_PASS("machine-cp", MachineCopyPropagationPass())
MACHINE_FUNCTION_PASS("machine-cse", MachineCSEPass())
@@ -304,7 +305,6 @@ DUMMY_MACHINE_FUNCTION_PASS("fs-profile-loader", MIRProfileLoaderNewPass)
DUMMY_MACHINE_FUNCTION_PASS("funclet-layout", FuncletLayoutPass)
DUMMY_MACHINE_FUNCTION_PASS("gc-empty-basic-blocks", GCEmptyBasicBlocksPass)
DUMMY_MACHINE_FUNCTION_PASS("implicit-null-checks", ImplicitNullChecksPass)
-DUMMY_MACHINE_FUNCTION_PASS("init-undef-pass", InitUndefPass)
DUMMY_MACHINE_FUNCTION_PASS("instruction-select", InstructionSelectPass)
DUMMY_MACHINE_FUNCTION_PASS("irtranslator", IRTranslatorPass)
DUMMY_MACHINE_FUNCTION_PASS("kcfi", MachineKCFIPass)
diff --git a/llvm/lib/CodeGen/CodeGen.cpp b/llvm/lib/CodeGen/CodeGen.cpp
index 5250534d8a4e4..aa3591cb6be58 100644
--- a/llvm/lib/CodeGen/CodeGen.cpp
+++ b/llvm/lib/CodeGen/CodeGen.cpp
@@ -54,7 +54,7 @@ void llvm::initializeCodeGen(PassRegistry &Registry) {
initializeIfConverterPass(Registry);
initializeImplicitNullChecksPass(Registry);
initializeIndirectBrExpandLegacyPassPass(Registry);
- initializeInitUndefPass(Registry);
+ initializeInitUndefLegacyPass(Registry);
initializeInterleavedLoadCombinePass(Registry);
initializeInterleavedAccessPass(Registry);
initializeJMCInstrumenterPass(Registry);
diff --git a/llvm/lib/CodeGen/InitUndef.cpp b/llvm/lib/CodeGen/InitUndef.cpp
index 6c0e9f9e930b9..500a73be7c0f5 100644
--- a/llvm/lib/CodeGen/InitUndef.cpp
+++ b/llvm/lib/CodeGen/InitUndef.cpp
@@ -38,6 +38,7 @@
//
//===----------------------------------------------------------------------===//
+#include "llvm/CodeGen/InitUndef.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/DetectDeadLanes.h"
@@ -59,20 +60,12 @@ using namespace llvm;
namespace {
-class InitUndef : public MachineFunctionPass {
- const TargetInstrInfo *TII;
- MachineRegisterInfo *MRI;
- const TargetSubtargetInfo *ST;
- const TargetRegisterInfo *TRI;
-
- // Newly added vregs, assumed to be fully rewritten
- SmallSet<Register, 8> NewRegs;
- SmallVector<MachineInstr *, 8> DeadInsts;
-
+class InitUndefLegacy : public MachineFunctionPass {
public:
static char ID;
- InitUndef() : MachineFunctionPass(ID) {}
+ InitUndefLegacy() : MachineFunctionPass(ID) {}
+
bool runOnMachineFunction(MachineFunction &MF) override;
void getAnalysisUsage(AnalysisUsage &AU) const override {
@@ -81,6 +74,20 @@ class InitUndef : public MachineFunctionPass {
}
StringRef getPassName() const override { return INIT_UNDEF_NAME; }
+};
+
+class InitUndef {
+ const TargetInstrInfo *TII;
+ MachineRegisterInfo *MRI;
+ const TargetSubtargetInfo *ST;
+ const TargetRegisterInfo *TRI;
+
+ // Newly added vregs, assumed to be fully rewritten
+ SmallSet<Register, 8> NewRegs;
+ SmallVector<MachineInstr *, 8> DeadInsts;
+
+public:
+ bool run(MachineFunction &MF);
private:
bool processBasicBlock(MachineFunction &MF, MachineBasicBlock &MBB,
@@ -93,9 +100,9 @@ class InitUndef : public MachineFunctionPass {
} // end anonymous namespace
-char InitUndef::ID = 0;
-INITIALIZE_PASS(InitUndef, DEBUG_TYPE, INIT_UNDEF_NAME, false, false)
-char &llvm::InitUndefID = InitUndef::ID;
+char InitUndefLegacy::ID = 0;
+INITIALIZE_PASS(InitUndefLegacy, DEBUG_TYPE, INIT_UNDEF_NAME, false, false)
+char &llvm::InitUndefID = InitUndefLegacy::ID;
static bool isEarlyClobberMI(MachineInstr &MI) {
return llvm::any_of(MI.all_defs(), [](const MachineOperand &DefMO) {
@@ -246,7 +253,20 @@ bool InitUndef::processBasicBlock(MachineFunction &MF, MachineBasicBlock &MBB,
return Changed;
}
-bool InitUndef::runOnMachineFunction(MachineFunction &MF) {
+bool InitUndefLegacy::runOnMachineFunction(MachineFunction &MF) {
+ return InitUndef().run(MF);
+}
+
+PreservedAnalyses InitUndefPass::run(MachineFunction &MF,
+ MachineFunctionAnalysisManager &MFAM) {
+ if (!InitUndef().run(MF))
+ return PreservedAnalyses::all();
+ auto PA = getMachineFunctionPassPreservedAnalyses();
+ PA.preserveSet<CFGAnalyses>();
+ return PA;
+}
+
+bool InitUndef::run(MachineFunction &MF) {
ST = &MF.getSubtarget();
// The pass is only needed if early-clobber defs and undef ops cannot be
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
index 7740f622ede7c..5f7ce13ad8a3e 100644
--- a/llvm/lib/Passes/PassBuilder.cpp
+++ b/llvm/lib/Passes/PassBuilder.cpp
@@ -103,6 +103,7 @@
#include "llvm/CodeGen/GlobalMergeFunctions.h"
#include "llvm/CodeGen/HardwareLoops.h"
#include "llvm/CodeGen/IndirectBrExpand.h"
+#include "llvm/CodeGen/InitUndef.h"
#include "llvm/CodeGen/InterleavedAccess.h"
#include "llvm/CodeGen/InterleavedLoadCombine.h"
#include "llvm/CodeGen/JMCInstrumenter.h"
diff --git a/llvm/test/CodeGen/AArch64/init-undef.mir b/llvm/test/CodeGen/AArch64/init-undef.mir
index c9d23006d3523..cee41c053251d 100644
--- a/llvm/test/CodeGen/AArch64/init-undef.mir
+++ b/llvm/test/CodeGen/AArch64/init-undef.mir
@@ -2,6 +2,9 @@
# RUN: llc -mtriple=aarch64-- -aarch64-enable-subreg-liveness-tracking=false -run-pass=init-undef -o - %s | FileCheck %s
# RUN: llc -mtriple=aarch64-- -aarch64-enable-subreg-liveness-tracking=true -run-pass=init-undef -o - %s | FileCheck %s
+# RUN: llc -mtriple=aarch64-- -aarch64-enable-subreg-liveness-tracking=false -passes=init-undef -o - %s | FileCheck %s
+# RUN: llc -mtriple=aarch64-- -aarch64-enable-subreg-liveness-tracking=true -passes=init-undef -o - %s | FileCheck %s
+
---
name: test_stxp_undef
body: |
diff --git a/llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll b/llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll
index 91c15565762de..e00b7ff83e322 100644
--- a/llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll
+++ b/llvm/test/CodeGen/AMDGPU/llc-pipeline-npm.ll
@@ -9,9 +9,9 @@
; GCN-O0: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(atomic-expand,verify,gc-lowering,lower-constant-intrinsics,UnreachableBlockElimPass,ee-instrument<post-inline>,scalarize-masked-mem-intrin,ExpandReductionsPass,amdgpu-lower-kernel-arguments),amdgpu-lower-buffer-fat-pointers,cgscc(function(lower-switch,lower-invoke,UnreachableBlockElimPass,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,phi-node-elimination,two-address-instruction,regallocfast,si-fix-vgpr-copies,remove-redundant-debug-values,fixup-statepoint-caller-saved,prolog-epilog,post-ra-pseudos,fentry-insert,xray-instrumentation,patchable-function,si-memory-legalizer,si-insert-waitcnts,si-late-branch-lowering,post-RA-hazard-rec,AMDGPUWaitSGPRHazardsPass,branch-relaxation,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),invalidate<machine-function-info>))
-; GCN-O2: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-image-intrinsic-opt),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(infer-address-spaces,amdgpu-atomic-optimizer,atomic-expand,amdgpu-promote-alloca,separate-const-offset-from-gep<>,slsr,early-cse<>,nary-reassociate,early-cse<>,amdgpu-codegenprepare,verify,loop-mssa(loop-reduce),mergeicmps,expand-memcmp,gc-lowering,lower-constant-intrinsics,UnreachableBlockElimPass,consthoist,ReplaceWithVeclib,partially-inline-libcalls,ee-instrument<post-inline>,scalarize-masked-mem-intrin,ExpandReductionsPass,early-cse<>,amdgpu-lower-kernel-arguments),amdgpu-lower-buffer-fat-pointers,cgscc(function(codegenprepare,load-store-vectorizer,lower-switch,lower-invoke,UnreachableBlockElimPass,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>,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,detect-dead-lanes,dead-mi-elimination,InitUndefPass,ProcessImplicitDefsPass,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,PostRAMachineSinkingPass,shrink-wrap,prolog-epilog,branch-folder,tailduplication,machine-latecleanup,machine-cp,post-ra-pseudos,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,AMDGPUWaitSGPRHazardsPass,amdgpu-insert-delay-alu,branch-relaxation,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),invalidate<machine-function-info>))
+; GCN-O2: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-image-intrinsic-opt),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(infer-address-spaces,amdgpu-atomic-optimizer,atomic-expand,amdgpu-promote-alloca,separate-const-offset-from-gep<>,slsr,early-cse<>,nary-reassociate,early-cse<>,amdgpu-codegenprepare,verify,loop-mssa(loop-reduce),mergeicmps,expand-memcmp,gc-lowering,lower-constant-intrinsics,UnreachableBlockElimPass,consthoist,ReplaceWithVeclib,partially-inline-libcalls,ee-instrument<post-inline>,scalarize-masked-mem-intrin,ExpandReductionsPass,early-cse<>,amdgpu-lower-kernel-arguments),amdgpu-lower-buffer-fat-pointers,cgscc(function(codegenprepare,load-store-vectorizer,lower-switch,lower-invoke,UnreachableBlockElimPass,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>,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,detect-dead-lanes,dead-mi-elimination,init-undef,ProcessImplicitDefsPass,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,PostRAMachineSinkingPass,shrink-wrap,prolog-epilog,branch-folder,tailduplication,machine-latecleanup,machine-cp,post-ra-pseudos,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,AMDGPUWaitSGPRHazardsPass,amdgpu-insert-delay-alu,branch-relaxation,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),invalidate<machine-function-info>))
-; GCN-O3: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-image-intrinsic-opt),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(infer-address-spaces,amdgpu-atomic-optimizer,atomic-expand,amdgpu-promote-alloca,separate-const-offset-from-gep<>,slsr,gvn<>,nary-reassociate,early-cse<>,amdgpu-codegenprepare,verify,loop-mssa(loop-reduce),mergeicmps,expand-memcmp,gc-lowering,lower-constant-intrinsics,UnreachableBlockElimPass,consthoist,ReplaceWithVeclib,partially-inline-libcalls,ee-instrument<post-inline>,scalarize-masked-mem-intrin,ExpandReductionsPass,gvn<>,amdgpu-lower-kernel-arguments),amdgpu-lower-buffer-fat-pointers,cgscc(function(codegenprepare,load-store-vectorizer,lower-switch,lower-invoke,UnreachableBlockElimPass,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>,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,detect-dead-lanes,dead-mi-elimination,InitUndefPass,ProcessImplicitDefsPass,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,PostRAMachineSinkingPass,shrink-wrap,prolog-epilog,branch-folder,tailduplication,machine-latecleanup,machine-cp,post-ra-pseudos,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,AMDGPUWaitSGPRHazardsPass,amdgpu-insert-delay-alu,branch-relaxation,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),invalidate<machine-function-info>))
+; GCN-O3: require<MachineModuleAnalysis>,require<profile-summary>,require<collector-metadata>,pre-isel-intrinsic-lowering,function(expand-large-div-rem,expand-fp),amdgpu-remove-incompatible-functions,amdgpu-printf-runtime-binding,amdgpu-lower-ctor-dtor,function(amdgpu-image-intrinsic-opt),expand-variadics,amdgpu-always-inline,always-inline,amdgpu-export-kernel-runtime-handles,amdgpu-sw-lower-lds,amdgpu-lower-module-lds,function(infer-address-spaces,amdgpu-atomic-optimizer,atomic-expand,amdgpu-promote-alloca,separate-const-offset-from-gep<>,slsr,gvn<>,nary-reassociate,early-cse<>,amdgpu-codegenprepare,verify,loop-mssa(loop-reduce),mergeicmps,expand-memcmp,gc-lowering,lower-constant-intrinsics,UnreachableBlockElimPass,consthoist,ReplaceWithVeclib,partially-inline-libcalls,ee-instrument<post-inline>,scalarize-masked-mem-intrin,ExpandReductionsPass,gvn<>,amdgpu-lower-kernel-arguments),amdgpu-lower-buffer-fat-pointers,cgscc(function(codegenprepare,load-store-vectorizer,lower-switch,lower-invoke,UnreachableBlockElimPass,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>,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,detect-dead-lanes,dead-mi-elimination,init-undef,ProcessImplicitDefsPass,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,PostRAMachineSinkingPass,shrink-wrap,prolog-epilog,branch-folder,tailduplication,machine-latecleanup,machine-cp,post-ra-pseudos,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,AMDGPUWaitSGPRHazardsPass,amdgpu-insert-delay-alu,branch-relaxation,remove-loads-into-fake-uses,live-debug-values,machine-sanmd,stack-frame-layout,verify),invalidate<machine-function-info>))
define void @empty() {
ret void
diff --git a/llvm/test/CodeGen/RISCV/rvv/handle-noreg-with-implicit-def.mir b/llvm/test/CodeGen/RISCV/rvv/handle-noreg-with-implicit-def.mir
index 7b4d200ef8a3b..8cc89ed5af104 100644
--- a/llvm/test/CodeGen/RISCV/rvv/handle-noreg-with-implicit-def.mir
+++ b/llvm/test/CodeGen/RISCV/rvv/handle-noreg-with-implicit-def.mir
@@ -1,5 +1,7 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 3
# RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs -run-pass=init-undef -o - %s | FileCheck %s --check-prefix=MIR
+
+# RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs -passes=init-undef -o - %s | FileCheck %s --check-prefix=MIR
...
---
name: vrgather_all_undef
diff --git a/llvm/test/CodeGen/RISCV/rvv/subregister-undef-early-clobber.mir b/llvm/test/CodeGen/RISCV/rvv/subregister-undef-early-clobber.mir
index ed274cf49fa9b..31d0996852b76 100644
--- a/llvm/test/CodeGen/RISCV/rvv/subregister-undef-early-clobber.mir
+++ b/llvm/test/CodeGen/RISCV/rvv/subregister-undef-early-clobber.mir
@@ -1,5 +1,6 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc %s -mtriple=riscv64 -mattr=+v -enable-subreg-liveness -run-pass=init-undef -o - | FileCheck %s
+# RUN: llc %s -mtriple=riscv64 -mattr=+v -enable-subreg-liveness -passes=init-undef -o - | FileCheck %s
...
---
diff --git a/llvm/test/CodeGen/RISCV/rvv/undef-earlyclobber-chain.mir b/llvm/test/CodeGen/RISCV/rvv/undef-earlyclobber-chain.mir
index 9c23fd9902bb8..98cabe314917c 100644
--- a/llvm/test/CodeGen/RISCV/rvv/undef-earlyclobber-chain.mir
+++ b/llvm/test/CodeGen/RISCV/rvv/undef-earlyclobber-chain.mir
@@ -1,5 +1,6 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=riscv32 -mattr=+v -enable-subreg-liveness -run-pass init-undef -run-pass machineverifier %s -o - | FileCheck %s
+# RUN: llc -mtriple=riscv32 -mattr=+v -enable-subreg-liveness -passes=init-undef,verify %s -o - | FileCheck %s
--- |
source_filename = "<stdin>"
>From 4c9a53330d1e0fcd39cb75e45a010534cf4fb989 Mon Sep 17 00:00:00 2001
From: Akshat Oke <Akshat.Oke at amd.com>
Date: Mon, 5 May 2025 09:24:23 +0000
Subject: [PATCH 2/2] fix comment
---
llvm/include/llvm/CodeGen/InitUndef.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/llvm/include/llvm/CodeGen/InitUndef.h b/llvm/include/llvm/CodeGen/InitUndef.h
index 7274824a74905..be1cf4bfc9872 100644
--- a/llvm/include/llvm/CodeGen/InitUndef.h
+++ b/llvm/include/llvm/CodeGen/InitUndef.h
@@ -1,4 +1,4 @@
-//===- llvm/CodeGen/InitUndef.h --------------------*- C++ -*-===//
+//===- llvm/CodeGen/InitUndef.h ---------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
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