[AMDGPU][NPM] Port SIPreEmitPeephole to NPM (#130065)

llvm/lib/Target/AMDGPU/AMDGPU.h

@@ -210,7 +210,7 @@ extern char &SIWholeQuadModeID;
 void initializeSILowerControlFlowLegacyPass(PassRegistry &);
 extern char &SILowerControlFlowLegacyID;
 
-void initializeSIPreEmitPeepholePass(PassRegistry &);
+void initializeSIPreEmitPeepholeLegacyPass(PassRegistry &);
 extern char &SIPreEmitPeepholeID;
 
 void initializeSILateBranchLoweringLegacyPass(PassRegistry &);
@@ -399,6 +399,13 @@ public:
   static bool isRequired() { return true; }
 };
 
+class SIPreEmitPeepholePass : public PassInfoMixin<SIPreEmitPeepholePass> {
+public:
+  PreservedAnalyses run(MachineFunction &MF,
+                        MachineFunctionAnalysisManager &MFAM);
+  static bool isRequired() { return true; }
+};
+
 class AMDGPUSetWavePriorityPass
     : public PassInfoMixin<AMDGPUSetWavePriorityPass> {
 public:

llvm/lib/Target/AMDGPU/AMDGPUPassRegistry.def

@@ -127,6 +127,7 @@ MACHINE_FUNCTION_PASS("si-optimize-exec-masking-pre-ra", SIOptimizeExecMaskingPr
 MACHINE_FUNCTION_PASS("si-peephole-sdwa", SIPeepholeSDWAPass())
 MACHINE_FUNCTION_PASS("si-post-ra-bundler", SIPostRABundlerPass())
 MACHINE_FUNCTION_PASS("si-pre-allocate-wwm-regs", SIPreAllocateWWMRegsPass())
+MACHINE_FUNCTION_PASS("si-pre-emit-peephole", SIPreEmitPeepholePass())
 MACHINE_FUNCTION_PASS("si-shrink-instructions", SIShrinkInstructionsPass())
 MACHINE_FUNCTION_PASS("si-wqm", SIWholeQuadModePass())
 #undef MACHINE_FUNCTION_PASS
@@ -135,7 +136,6 @@ MACHINE_FUNCTION_PASS("si-wqm", SIWholeQuadModePass())
 DUMMY_MACHINE_FUNCTION_PASS("amdgpu-pre-ra-optimizations", GCNPreRAOptimizationsPass())
 DUMMY_MACHINE_FUNCTION_PASS("amdgpu-rewrite-partial-reg-uses", GCNRewritePartialRegUsesPass())
 
-DUMMY_MACHINE_FUNCTION_PASS("si-pre-emit-peephole", SIPreEmitPeepholePass())
 // TODO: Move amdgpu-preload-kern-arg-prolog to MACHINE_FUNCTION_PASS since it
 // already exists.
 DUMMY_MACHINE_FUNCTION_PASS("amdgpu-preload-kern-arg-prolog", AMDGPUPreloadKernArgPrologPass())

llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp

@@ -542,7 +542,7 @@ extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeAMDGPUTarget() {
   initializeSIModeRegisterLegacyPass(*PR);
   initializeSIWholeQuadModeLegacyPass(*PR);
   initializeSILowerControlFlowLegacyPass(*PR);
-  initializeSIPreEmitPeepholePass(*PR);
+  initializeSIPreEmitPeepholeLegacyPass(*PR);
   initializeSILateBranchLoweringLegacyPass(*PR);
   initializeSIMemoryLegalizerLegacyPass(*PR);
   initializeSIOptimizeExecMaskingLegacyPass(*PR);
@@ -2173,9 +2173,8 @@ void AMDGPUCodeGenPassBuilder::addPreEmitPass(AddMachinePass &addPass) const {
   if (isPassEnabled(EnableSetWavePriority, CodeGenOptLevel::Less))
     addPass(AMDGPUSetWavePriorityPass());
 
-  if (TM.getOptLevel() > CodeGenOptLevel::None) {
-    // TODO: addPass(SIPreEmitPeepholePass());
-  }
+  if (TM.getOptLevel() > CodeGenOptLevel::None)
+    addPass(SIPreEmitPeepholePass());
 
   // The hazard recognizer that runs as part of the post-ra scheduler does not
   // guarantee to be able handle all hazards correctly. This is because if there

llvm/lib/Target/AMDGPU/SIPreEmitPeephole.cpp

@@ -24,7 +24,7 @@ using namespace llvm;
 
 namespace {
 
-class SIPreEmitPeephole : public MachineFunctionPass {
+class SIPreEmitPeephole {
 private:
   const SIInstrInfo *TII = nullptr;
   const SIRegisterInfo *TRI = nullptr;
@@ -40,24 +40,31 @@ private:
                              const MachineBasicBlock &To) const;
   bool removeExeczBranch(MachineInstr &MI, MachineBasicBlock &SrcMBB);
 
+public:
+  bool run(MachineFunction &MF);
+};
+
+class SIPreEmitPeepholeLegacy : public MachineFunctionPass {
 public:
   static char ID;
 
-  SIPreEmitPeephole() : MachineFunctionPass(ID) {
-    initializeSIPreEmitPeepholePass(*PassRegistry::getPassRegistry());
+  SIPreEmitPeepholeLegacy() : MachineFunctionPass(ID) {
+    initializeSIPreEmitPeepholeLegacyPass(*PassRegistry::getPassRegistry());
   }
 
-  bool runOnMachineFunction(MachineFunction &MF) override;
+  bool runOnMachineFunction(MachineFunction &MF) override {
+    return SIPreEmitPeephole().run(MF);
+  }
 };
 
 } // End anonymous namespace.
 
-INITIALIZE_PASS(SIPreEmitPeephole, DEBUG_TYPE,
+INITIALIZE_PASS(SIPreEmitPeepholeLegacy, DEBUG_TYPE,
                 "SI peephole optimizations", false, false)
 
-char SIPreEmitPeephole::ID = 0;
+char SIPreEmitPeepholeLegacy::ID = 0;
 
-char &llvm::SIPreEmitPeepholeID = SIPreEmitPeephole::ID;
+char &llvm::SIPreEmitPeepholeID = SIPreEmitPeepholeLegacy::ID;
 
 bool SIPreEmitPeephole::optimizeVccBranch(MachineInstr &MI) const {
   // Match:
@@ -410,7 +417,16 @@ bool SIPreEmitPeephole::removeExeczBranch(MachineInstr &MI,
   return true;
 }
 
-bool SIPreEmitPeephole::runOnMachineFunction(MachineFunction &MF) {
+PreservedAnalyses
+llvm::SIPreEmitPeepholePass::run(MachineFunction &MF,
+                                 MachineFunctionAnalysisManager &MFAM) {
+  if (!SIPreEmitPeephole().run(MF))
+    return PreservedAnalyses::all();
+
+  return getMachineFunctionPassPreservedAnalyses();
+}
+
+bool SIPreEmitPeephole::run(MachineFunction &MF) {
   const GCNSubtarget &ST = MF.getSubtarget<GCNSubtarget>();
   TII = ST.getInstrInfo();
   TRI = &TII->getRegisterInfo();

llvm/test/CodeGen/AMDGPU/insert-handle-flat-vmem-ds.mir

@@ -1,5 +1,6 @@
 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=amdgcn -mcpu=polaris10 -run-pass si-pre-emit-peephole -verify-machineinstrs %s -o - | FileCheck %s
+# RUN: llc -mtriple=amdgcn -mcpu=polaris10 -passes si-pre-emit-peephole %s -o - | FileCheck %s
 
 ---
 

llvm/test/CodeGen/AMDGPU/remove-short-exec-branches-special-instructions.mir

@@ -1,5 +1,6 @@
 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=amdgcn -mcpu=gfx1010 -run-pass=si-pre-emit-peephole -verify-machineinstrs  %s -o - | FileCheck %s
+# RUN: llc -mtriple=amdgcn -mcpu=gfx1010 -passes=si-pre-emit-peephole %s -o - | FileCheck %s
 # Make sure mandatory skips are not removed around mode defs.
 
 ---

llvm/test/CodeGen/AMDGPU/set-gpr-idx-peephole.mir

@@ -1,5 +1,6 @@
 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=amdgcn -mcpu=gfx900 -run-pass si-pre-emit-peephole -verify-machineinstrs -o - %s | FileCheck -check-prefix=GCN %s -implicit-check-not=S_SET_GPR_IDX
+# RUN: llc -mtriple=amdgcn -mcpu=gfx900 -passes si-pre-emit-peephole -o - %s | FileCheck -check-prefix=GCN %s -implicit-check-not=S_SET_GPR_IDX
 
 ---
 name:            simple