llvm/llvm/lib/Transforms/Scalar/FlattenCFGPass.cpp

//===- FlattenCFGPass.cpp - CFG Flatten Pass ----------------------===//
//
// 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 file implements flattening of CFG.
//
//===----------------------------------------------------------------------===//

#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/ValueHandle.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Scalar/FlattenCFG.h"
#include "llvm/Transforms/Utils/Local.h"

usingnamespacellvm;

#define DEBUG_TYPE …

namespace {
struct FlattenCFGLegacyPass : public FunctionPass { … };

/// iterativelyFlattenCFG - Call FlattenCFG on all the blocks in the function,
/// iterating until no more changes are made.
bool iterativelyFlattenCFG(Function &F, AliasAnalysis *AA) { … }
} // namespace

char FlattenCFGLegacyPass::ID = …;

INITIALIZE_PASS_BEGIN(FlattenCFGLegacyPass, "flattencfg", "Flatten the CFG",
                      false, false)
INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
INITIALIZE_PASS_END(FlattenCFGLegacyPass, "flattencfg", "Flatten the CFG",
                    false, false)

// Public interface to the FlattenCFG pass
FunctionPass *llvm::createFlattenCFGPass() { … }

bool FlattenCFGLegacyPass::runOnFunction(Function &F) { … }

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