llvm/llvm/lib/Transforms/Utils/LowerGlobalDtors.cpp

//===-- LowerGlobalDtors.cpp - Lower @llvm.global_dtors -------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Lower @llvm.global_dtors.
///
/// Implement @llvm.global_dtors by creating wrapper functions that are
/// registered in @llvm.global_ctors and which contain a call to
/// `__cxa_atexit` to register their destructor functions.
///
//===----------------------------------------------------------------------===//

#include "llvm/Transforms/Utils/LowerGlobalDtors.h"

#include "llvm/IR/Constants.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Module.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Transforms/Utils.h"
#include "llvm/Transforms/Utils/ModuleUtils.h"
#include <map>

usingnamespacellvm;

#define DEBUG_TYPE …

namespace {
class LowerGlobalDtorsLegacyPass final : public ModulePass { … };
} // End anonymous namespace

char LowerGlobalDtorsLegacyPass::ID = …;
INITIALIZE_PASS(…)

ModulePass *llvm::createLowerGlobalDtorsLegacyPass() { … }

static bool runImpl(Module &M);
bool LowerGlobalDtorsLegacyPass::runOnModule(Module &M) { … }

PreservedAnalyses LowerGlobalDtorsPass::run(Module &M,
                                            ModuleAnalysisManager &AM) { … }

static bool runImpl(Module &M) { … }