llvm/llvm/lib/Transforms/Scalar/InstSimplifyPass.cpp

//===- InstSimplifyPass.cpp -----------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "llvm/Transforms/Scalar/InstSimplifyPass.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/Analysis/InstructionSimplify.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/Local.h"

usingnamespacellvm;

#define DEBUG_TYPE …

STATISTIC(NumSimplified, "Number of redundant instructions removed");

static bool runImpl(Function &F, const SimplifyQuery &SQ) { … }

namespace {
struct InstSimplifyLegacyPass : public FunctionPass { … };
} // namespace

char InstSimplifyLegacyPass::ID = …;
INITIALIZE_PASS_BEGIN(InstSimplifyLegacyPass, "instsimplify",
                      "Remove redundant instructions", false, false)
INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
INITIALIZE_PASS_END(InstSimplifyLegacyPass, "instsimplify",
                    "Remove redundant instructions", false, false)

// Public interface to the simplify instructions pass.
FunctionPass *llvm::createInstSimplifyLegacyPass() { … }

PreservedAnalyses InstSimplifyPass::run(Function &F,
                                        FunctionAnalysisManager &AM) { … }