llvm/llvm/lib/Transforms/Utils/Mem2Reg.cpp

//===- Mem2Reg.cpp - The -mem2reg pass, a wrapper around the Utils lib ----===//
//
// 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 is a simple pass wrapper around the PromoteMemToReg function call
// exposed by the Utils library.
//
//===----------------------------------------------------------------------===//

#include "llvm/Transforms/Utils/Mem2Reg.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/PassManager.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Transforms/Utils.h"
#include "llvm/Transforms/Utils/PromoteMemToReg.h"
#include <vector>

usingnamespacellvm;

#define DEBUG_TYPE …

STATISTIC(NumPromoted, "Number of alloca's promoted");

static bool promoteMemoryToRegister(Function &F, DominatorTree &DT,
                                    AssumptionCache &AC) { … }

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

namespace {

struct PromoteLegacyPass : public FunctionPass { … };

} // end anonymous namespace

char PromoteLegacyPass::ID = …;

INITIALIZE_PASS_BEGIN(PromoteLegacyPass, "mem2reg", "Promote Memory to "
                                                    "Register",
                      false, false)
INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
INITIALIZE_PASS_END(PromoteLegacyPass, "mem2reg", "Promote Memory to Register",
                    false, false)

// createPromoteMemoryToRegister - Provide an entry point to create this pass.
FunctionPass *llvm::createPromoteMemoryToRegisterPass() { … }