File Manager

003 File Manager

Current Path: /usr/src/contrib/llvm-project/llvm/lib/Transforms/Scalar

usr / src / contrib / llvm-project / llvm / lib / Transforms / Scalar /

📁 ..
📄 ADCE.cpp(24.71 KB)
📄 AlignmentFromAssumptions.cpp(15.9 KB)
📄 BDCE.cpp(7.42 KB)
📄 CallSiteSplitting.cpp(21.43 KB)
📄 ConstantHoisting.cpp(38.95 KB)
📄 ConstantProp.cpp(4.13 KB)
📄 CorrelatedValuePropagation.cpp(32.36 KB)
📄 DCE.cpp(6.84 KB)
📄 DeadStoreElimination.cpp(91.51 KB)
📄 DivRemPairs.cpp(15.01 KB)
📄 EarlyCSE.cpp(57.05 KB)
📄 FlattenCFGPass.cpp(2.74 KB)
📄 Float2Int.cpp(18.19 KB)
📄 GVN.cpp(100.11 KB)
📄 GVNHoist.cpp(44.85 KB)
📄 GVNSink.cpp(29.97 KB)
📄 GuardWidening.cpp(32.36 KB)
📄 IVUsersPrinter.cpp(839 B)
📄 IndVarSimplify.cpp(113.49 KB)
📄 InductiveRangeCheckElimination.cpp(72.96 KB)
📄 InferAddressSpaces.cpp(44.22 KB)
📄 InstSimplifyPass.cpp(5.39 KB)
📄 JumpThreading.cpp(115.06 KB)
📄 LICM.cpp(92.71 KB)
📄 LoopAccessAnalysisPrinter.cpp(977 B)
📄 LoopDataPrefetch.cpp(14.54 KB)
📄 LoopDeletion.cpp(11.37 KB)
📄 LoopDistribute.cpp(40.25 KB)
📄 LoopFuse.cpp(68.6 KB)
📄 LoopIdiomRecognize.cpp(69.09 KB)
📄 LoopInstSimplify.cpp(9.38 KB)
📄 LoopInterchange.cpp(60.65 KB)
📄 LoopLoadElimination.cpp(26.71 KB)
📄 LoopPassManager.cpp(4.02 KB)
📄 LoopPredication.cpp(49.21 KB)
📄 LoopRerollPass.cpp(58.54 KB)
📄 LoopRotation.cpp(4.79 KB)
📄 LoopSimplifyCFG.cpp(28.59 KB)
📄 LoopSink.cpp(14.93 KB)
📄 LoopStrengthReduce.cpp(216.88 KB)
📄 LoopUnrollAndJamPass.cpp(21.07 KB)
📄 LoopUnrollPass.cpp(60.73 KB)
📄 LoopUnswitch.cpp(64.17 KB)
📄 LoopVersioningLICM.cpp(23.65 KB)
📄 LowerAtomic.cpp(5.12 KB)
📄 LowerConstantIntrinsics.cpp(5.8 KB)
📄 LowerExpectIntrinsic.cpp(15 KB)
📄 LowerGuardIntrinsic.cpp(2.82 KB)
📄 LowerMatrixIntrinsics.cpp(73.36 KB)
📄 LowerWidenableCondition.cpp(2.75 KB)
📄 MakeGuardsExplicit.cpp(3.83 KB)
📄 MemCpyOptimizer.cpp(52.16 KB)
📄 MergeICmps.cpp(35.61 KB)
📄 MergedLoadStoreMotion.cpp(15.18 KB)
📄 NaryReassociate.cpp(19.86 KB)
📄 NewGVN.cpp(170.95 KB)
📄 PartiallyInlineLibCalls.cpp(6.22 KB)
📄 PlaceSafepoints.cpp(27.5 KB)
📄 Reassociate.cpp(95.61 KB)
📄 Reg2Mem.cpp(4.34 KB)
📄 RewriteStatepointsForGC.cpp(116.35 KB)
📄 SCCP.cpp(76.12 KB)
📄 SROA.cpp(183.83 KB)
📄 Scalar.cpp(10.08 KB)
📄 Scalarizer.cpp(32.93 KB)
📄 SeparateConstOffsetFromGEP.cpp(52.99 KB)
📄 SimpleLoopUnswitch.cpp(124.57 KB)
📄 SimplifyCFGPass.cpp(12.31 KB)
📄 Sink.cpp(10.81 KB)
📄 SpeculateAroundPHIs.cpp(35.69 KB)
📄 SpeculativeExecution.cpp(11.54 KB)
📄 StraightLineStrengthReduce.cpp(28.92 KB)
📄 StructurizeCFG.cpp(32.49 KB)
📄 TailRecursionElimination.cpp(34.9 KB)
📄 WarnMissedTransforms.cpp(6.14 KB)

Editing: LowerWidenableCondition.cpp

//===- LowerWidenableCondition.cpp - Lower the guard intrinsic ---------------===//
//
// 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 pass lowers the llvm.widenable.condition intrinsic to default value
// which is i1 true.
//
//===----------------------------------------------------------------------===//

#include "llvm/Transforms/Scalar/LowerWidenableCondition.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Analysis/GuardUtils.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PatternMatch.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/GuardUtils.h"

using namespace llvm;

namespace {
struct LowerWidenableConditionLegacyPass : public FunctionPass {
  static char ID;
  LowerWidenableConditionLegacyPass() : FunctionPass(ID) {
    initializeLowerWidenableConditionLegacyPassPass(
        *PassRegistry::getPassRegistry());
  }

bool runOnFunction(Function &F) override;
};
}

static bool lowerWidenableCondition(Function &F) {
  // Check if we can cheaply rule out the possibility of not having any work to
  // do.
  auto *WCDecl = F.getParent()->getFunction(
      Intrinsic::getName(Intrinsic::experimental_widenable_condition));
  if (!WCDecl || WCDecl->use_empty())
    return false;

using namespace llvm::PatternMatch;
  SmallVector<CallInst *, 8> ToLower;
  for (auto &I : instructions(F))
    if (match(&I, m_Intrinsic<Intrinsic::experimental_widenable_condition>()))
      ToLower.push_back(cast<CallInst>(&I));

if (ToLower.empty())
    return false;

for (auto *CI : ToLower) {
    CI->replaceAllUsesWith(ConstantInt::getTrue(CI->getContext()));
    CI->eraseFromParent();
  }
  return true;
}

bool LowerWidenableConditionLegacyPass::runOnFunction(Function &F) {
  return lowerWidenableCondition(F);
}

char LowerWidenableConditionLegacyPass::ID = 0;
INITIALIZE_PASS(LowerWidenableConditionLegacyPass, "lower-widenable-condition",
                "Lower the widenable condition to default true value", false,
                false)

Pass *llvm::createLowerWidenableConditionPass() {
  return new LowerWidenableConditionLegacyPass();
}

PreservedAnalyses LowerWidenableConditionPass::run(Function &F,
                                               FunctionAnalysisManager &AM) {
  if (lowerWidenableCondition(F))
    return PreservedAnalyses::none();

return PreservedAnalyses::all();
}

003 File Manager

Editing: LowerWidenableCondition.cpp

Upload File

Create Folder