[CodeGen][NPM] Port ProcessImplicitDefs to NPM

Author: vikramRH

llvm/include/llvm/CodeGen/ProcessImplicitDefs.h

@@ -0,0 +1,28 @@
+//===- llvm/CodeGen/ProcessImplicitDefs.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_PROCESSIMPLICITDEFS_H
+#define LLVM_CODEGEN_PROCESSIMPLICITDEFS_H
+
+#include "llvm/CodeGen/MachinePassManager.h"
+
+namespace llvm {
+
+class ProcessImplicitDefsPass : public PassInfoMixin<ProcessImplicitDefsPass> {
+public:
+  PreservedAnalyses run(MachineFunction &MF,
+                        MachineFunctionAnalysisManager &MFAM);
+  MachineFunctionProperties getRequiredProperties() const {
+    return MachineFunctionProperties().set(
+        MachineFunctionProperties::Property::IsSSA);
+  }
+};
+
+} // namespace llvm
+
+#endif // LLVM_CODEGEN_PROCESSIMPLICITDEFS_H

llvm/include/llvm/InitializePasses.h

@@ -257,7 +257,7 @@ LLVM_ABI void initializePostRASchedulerLegacyPass(PassRegistry &);
 LLVM_ABI void initializePreISelIntrinsicLoweringLegacyPassPass(PassRegistry &);
 LLVM_ABI void initializePrintFunctionPassWrapperPass(PassRegistry &);
 LLVM_ABI void initializePrintModulePassWrapperPass(PassRegistry &);
-LLVM_ABI void initializeProcessImplicitDefsPass(PassRegistry &);
+LLVM_ABI void initializeProcessImplicitDefsLegacyPass(PassRegistry &);
 LLVM_ABI void initializeProfileSummaryInfoWrapperPassPass(PassRegistry &);
 LLVM_ABI void initializePromoteLegacyPassPass(PassRegistry &);
 LLVM_ABI void initializeRABasicPass(PassRegistry &);

llvm/include/llvm/Passes/CodeGenPassBuilder.h

@@ -72,6 +72,7 @@
 #include "llvm/CodeGen/PostRAMachineSink.h"
 #include "llvm/CodeGen/PostRASchedulerList.h"
 #include "llvm/CodeGen/PreISelIntrinsicLowering.h"
+#include "llvm/CodeGen/ProcessImplicitDefs.h"
 #include "llvm/CodeGen/RegAllocEvictionAdvisor.h"
 #include "llvm/CodeGen/RegAllocFast.h"
 #include "llvm/CodeGen/RegAllocGreedyPass.h"

llvm/include/llvm/Passes/MachinePassRegistry.def

@@ -152,6 +152,7 @@ MACHINE_FUNCTION_PASS("print<machine-uniformity>",
                       MachineUniformityPrinterPass(errs()))
 MACHINE_FUNCTION_PASS("print<slot-indexes>", SlotIndexesPrinterPass(errs()))
 MACHINE_FUNCTION_PASS("print<virtregmap>", VirtRegMapPrinterPass(errs()))
+MACHINE_FUNCTION_PASS("process-imp-defs", ProcessImplicitDefsPass())
 MACHINE_FUNCTION_PASS("prolog-epilog", PrologEpilogInserterPass())
 MACHINE_FUNCTION_PASS("reg-usage-collector", RegUsageInfoCollectorPass())
 MACHINE_FUNCTION_PASS("reg-usage-propagation", RegUsageInfoPropagationPass())
@@ -283,7 +284,6 @@ DUMMY_MACHINE_FUNCTION_PASS("static-data-splitter", StaticDataSplitter)
 DUMMY_MACHINE_FUNCTION_PASS("machine-function-splitter", MachineFunctionSplitterPass)
 DUMMY_MACHINE_FUNCTION_PASS("machineinstr-printer", MachineFunctionPrinterPass)
 DUMMY_MACHINE_FUNCTION_PASS("mirfs-discriminators", MIRAddFSDiscriminatorsPass)
-DUMMY_MACHINE_FUNCTION_PASS("processimpdefs", ProcessImplicitDefsPass)
 DUMMY_MACHINE_FUNCTION_PASS("prologepilog-code", PrologEpilogCodeInserterPass)
 DUMMY_MACHINE_FUNCTION_PASS("ra-basic", RABasicPass)
 DUMMY_MACHINE_FUNCTION_PASS("ra-pbqp", RAPBQPPass)

llvm/lib/CodeGen/CodeGen.cpp

@@ -110,7 +110,7 @@ void llvm::initializeCodeGen(PassRegistry &Registry) {
   initializePostRAHazardRecognizerLegacyPass(Registry);
   initializePostRASchedulerLegacyPass(Registry);
   initializePreISelIntrinsicLoweringLegacyPassPass(Registry);
-  initializeProcessImplicitDefsPass(Registry);
+  initializeProcessImplicitDefsLegacyPass(Registry);
   initializeRABasicPass(Registry);
   initializeRAGreedyLegacyPass(Registry);
   initializeRegAllocFastPass(Registry);

llvm/lib/CodeGen/ProcessImplicitDefs.cpp

@@ -6,6 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/CodeGen/ProcessImplicitDefs.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
@@ -26,40 +27,45 @@ using namespace llvm;
 namespace {
 /// Process IMPLICIT_DEF instructions and make sure there is one implicit_def
 /// for each use. Add isUndef marker to implicit_def defs and their uses.
-class ProcessImplicitDefs : public MachineFunctionPass {
-  const TargetInstrInfo *TII = nullptr;
-  const TargetRegisterInfo *TRI = nullptr;
-  MachineRegisterInfo *MRI = nullptr;
-
-  SmallSetVector<MachineInstr*, 16> WorkList;
-
-  void processImplicitDef(MachineInstr *MI);
-  bool canTurnIntoImplicitDef(MachineInstr *MI);
-
+class ProcessImplicitDefsLegacy : public MachineFunctionPass {
 public:
   static char ID;
 
-  ProcessImplicitDefs() : MachineFunctionPass(ID) {
-    initializeProcessImplicitDefsPass(*PassRegistry::getPassRegistry());
+  ProcessImplicitDefsLegacy() : MachineFunctionPass(ID) {
+    initializeProcessImplicitDefsLegacyPass(*PassRegistry::getPassRegistry());
   }
 
-  void getAnalysisUsage(AnalysisUsage &au) const override;
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 
   MachineFunctionProperties getRequiredProperties() const override {
     return MachineFunctionProperties().setIsSSA();
   }
 };
+
+class ProcessImplicitDefs {
+  const TargetInstrInfo *TII = nullptr;
+  const TargetRegisterInfo *TRI = nullptr;
+  MachineRegisterInfo *MRI = nullptr;
+
+  SmallSetVector<MachineInstr *, 16> WorkList;
+
+  void processImplicitDef(MachineInstr *MI);
+  bool canTurnIntoImplicitDef(MachineInstr *MI);
+
+public:
+  bool run(MachineFunction &MF);
+};
 } // end anonymous namespace
 
-char ProcessImplicitDefs::ID = 0;
-char &llvm::ProcessImplicitDefsID = ProcessImplicitDefs::ID;
+char ProcessImplicitDefsLegacy::ID = 0;
+char &llvm::ProcessImplicitDefsID = ProcessImplicitDefsLegacy::ID;
 
-INITIALIZE_PASS(ProcessImplicitDefs, DEBUG_TYPE,
+INITIALIZE_PASS(ProcessImplicitDefsLegacy, DEBUG_TYPE,
                 "Process Implicit Definitions", false, false)
 
-void ProcessImplicitDefs::getAnalysisUsage(AnalysisUsage &AU) const {
+void ProcessImplicitDefsLegacy::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
   AU.addPreserved<AAResultsWrapperPass>();
   MachineFunctionPass::getAnalysisUsage(AU);
@@ -132,9 +138,24 @@ void ProcessImplicitDefs::processImplicitDef(MachineInstr *MI) {
   LLVM_DEBUG(dbgs() << "Keeping physreg: " << *MI);
 }
 
+bool ProcessImplicitDefsLegacy::runOnMachineFunction(MachineFunction &MF) {
+  return ProcessImplicitDefs().run(MF);
+}
+
+PreservedAnalyses
+ProcessImplicitDefsPass::run(MachineFunction &MF,
+                             MachineFunctionAnalysisManager &MFAM) {
+  if (!ProcessImplicitDefs().run(MF))
+    return PreservedAnalyses::all();
+
+  return getMachineFunctionPassPreservedAnalyses()
+      .preserveSet<CFGAnalyses>()
+      .preserve<AAManager>();
+}
+
 /// processImplicitDefs - Process IMPLICIT_DEF instructions and turn them into
 /// <undef> operands.
-bool ProcessImplicitDefs::runOnMachineFunction(MachineFunction &MF) {
+bool ProcessImplicitDefs::run(MachineFunction &MF) {
 
   LLVM_DEBUG(dbgs() << "********** PROCESS IMPLICIT DEFS **********\n"
                     << "********** Function: " << MF.getName() << '\n');

llvm/lib/Passes/PassBuilder.cpp

@@ -143,6 +143,7 @@
 #include "llvm/CodeGen/PostRAMachineSink.h"
 #include "llvm/CodeGen/PostRASchedulerList.h"
 #include "llvm/CodeGen/PreISelIntrinsicLowering.h"
+#include "llvm/CodeGen/ProcessImplicitDefs.h"
 #include "llvm/CodeGen/RegAllocEvictionAdvisor.h"
 #include "llvm/CodeGen/RegAllocFast.h"
 #include "llvm/CodeGen/RegAllocGreedyPass.h"