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📄 AMDGPUEmitPrintf.cpp(8.57 KB)
📄 ASanStackFrameLayout.cpp(5.75 KB)
📄 AddDiscriminators.cpp(10.78 KB)
📄 AssumeBundleBuilder.cpp(21.46 KB)
📄 BasicBlockUtils.cpp(51.81 KB)
📄 BreakCriticalEdges.cpp(19.03 KB)
📄 BuildLibCalls.cpp(43.9 KB)
📄 BypassSlowDivision.cpp(17.95 KB)
📄 CallGraphUpdater.cpp(5.76 KB)
📄 CallPromotionUtils.cpp(22.18 KB)
📄 CanonicalizeAliases.cpp(3.18 KB)
📄 CanonicalizeFreezeInLoops.cpp(7.93 KB)
📄 CloneFunction.cpp(34.49 KB)
📄 CloneModule.cpp(7.93 KB)
📄 CodeExtractor.cpp(65.69 KB)
📄 CodeMoverUtils.cpp(15.82 KB)
📄 CtorUtils.cpp(5.1 KB)
📄 Debugify.cpp(17.78 KB)
📄 DemoteRegToStack.cpp(6.1 KB)
📄 EntryExitInstrumenter.cpp(5.83 KB)
📄 EscapeEnumerator.cpp(2.96 KB)
📄 Evaluator.cpp(27.98 KB)
📄 FixIrreducible.cpp(12.68 KB)
📄 FlattenCFG.cpp(16.99 KB)
📄 FunctionComparator.cpp(34.36 KB)
📄 FunctionImportUtils.cpp(13.8 KB)
📄 GlobalStatus.cpp(7.23 KB)
📄 GuardUtils.cpp(4.76 KB)
📄 ImportedFunctionsInliningStatistics.cpp(7.67 KB)
📄 InjectTLIMappings.cpp(6.62 KB)
📄 InlineFunction.cpp(103.28 KB)
📄 InstructionNamer.cpp(1.98 KB)
📄 IntegerDivision.cpp(26.17 KB)
📄 LCSSA.cpp(18.72 KB)
📄 LibCallsShrinkWrap.cpp(18.68 KB)
📄 Local.cpp(114.96 KB)
📄 LoopRotationUtils.cpp(29.47 KB)
📄 LoopSimplify.cpp(36.13 KB)
📄 LoopUnroll.cpp(38.07 KB)
📄 LoopUnrollAndJam.cpp(37.71 KB)
📄 LoopUnrollPeel.cpp(31.88 KB)
📄 LoopUnrollRuntime.cpp(40.17 KB)
📄 LoopUtils.cpp(65.03 KB)
📄 LoopVersioning.cpp(12.42 KB)
📄 LowerInvoke.cpp(3.3 KB)
📄 LowerMemIntrinsics.cpp(20.41 KB)
📄 LowerSwitch.cpp(23.46 KB)
📄 Mem2Reg.cpp(3.71 KB)
📄 MetaRenamer.cpp(5.29 KB)
📄 MisExpect.cpp(6.97 KB)
📄 ModuleUtils.cpp(10.99 KB)
📄 NameAnonGlobals.cpp(3.33 KB)
📄 PredicateInfo.cpp(36.79 KB)
📄 PromoteMemoryToRegister.cpp(37.26 KB)
📄 SSAUpdater.cpp(16.72 KB)
📄 SSAUpdaterBulk.cpp(7.46 KB)
📄 SanitizerStats.cpp(4.08 KB)
📄 ScalarEvolutionExpander.cpp(101.25 KB)
📄 SimplifyCFG.cpp(238.13 KB)
📄 SimplifyIndVar.cpp(34.53 KB)
📄 SimplifyLibCalls.cpp(122.25 KB)
📄 SizeOpts.cpp(5.08 KB)
📄 SplitModule.cpp(9.67 KB)
📄 StripGCRelocates.cpp(2.86 KB)
📄 StripNonLineTableDebugInfo.cpp(1.4 KB)
📄 SymbolRewriter.cpp(18.82 KB)
📄 UnifyFunctionExitNodes.cpp(4.42 KB)
📄 UnifyLoopExits.cpp(8.16 KB)
📄 UniqueInternalLinkageNames.cpp(2.91 KB)
📄 Utils.cpp(2.53 KB)
📄 VNCoercion.cpp(25.89 KB)
📄 ValueMapper.cpp(38.06 KB)

Editing: StripGCRelocates.cpp

//===- StripGCRelocates.cpp - Remove gc.relocates inserted by RewriteStatePoints===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This is a little utility pass that removes the gc.relocates inserted by
// RewriteStatepointsForGC. Note that the generated IR is incorrect,
// but this is useful as a single pass in itself, for analysis of IR, without
// the GC.relocates. The statepoint and gc.result instrinsics would still be
// present.
//===----------------------------------------------------------------------===//

#include "llvm/IR/Function.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Statepoint.h"
#include "llvm/IR/Type.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/raw_ostream.h"

using namespace llvm;

namespace {
struct StripGCRelocates : public FunctionPass {
  static char ID; // Pass identification, replacement for typeid
  StripGCRelocates() : FunctionPass(ID) {
    initializeStripGCRelocatesPass(*PassRegistry::getPassRegistry());
  }

void getAnalysisUsage(AnalysisUsage &Info) const override {}

bool runOnFunction(Function &F) override;

};
char StripGCRelocates::ID = 0;
}

bool StripGCRelocates::runOnFunction(Function &F) {
  // Nothing to do for declarations.
  if (F.isDeclaration())
    return false;
  SmallVector<GCRelocateInst *, 20> GCRelocates;
  // TODO: We currently do not handle gc.relocates that are in landing pads,
  // i.e. not bound to a single statepoint token.
  for (Instruction &I : instructions(F)) {
    if (auto *GCR = dyn_cast<GCRelocateInst>(&I))
      if (isa<GCStatepointInst>(GCR->getOperand(0)))
        GCRelocates.push_back(GCR);
  }
  // All gc.relocates are bound to a single statepoint token. The order of
  // visiting gc.relocates for deletion does not matter.
  for (GCRelocateInst *GCRel : GCRelocates) {
    Value *OrigPtr = GCRel->getDerivedPtr();
    Value *ReplaceGCRel = OrigPtr;

// All gc_relocates are i8 addrspace(1)* typed, we need a bitcast from i8
    // addrspace(1)* to the type of the OrigPtr, if the are not the same.
    if (GCRel->getType() != OrigPtr->getType())
      ReplaceGCRel = new BitCastInst(OrigPtr, GCRel->getType(), "cast", GCRel);

// Replace all uses of gc.relocate and delete the gc.relocate
    // There maybe unncessary bitcasts back to the OrigPtr type, an instcombine
    // pass would clear this up.
    GCRel->replaceAllUsesWith(ReplaceGCRel);
    GCRel->eraseFromParent();
  }
  return !GCRelocates.empty();
}

INITIALIZE_PASS(StripGCRelocates, "strip-gc-relocates",
                "Strip gc.relocates inserted through RewriteStatepointsForGC",
                true, false)

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Editing: StripGCRelocates.cpp

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