Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===-- UnifyFunctionExitNodes.h - Ensure fn's have one return --*- C++ -*-===//

//

// 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 used to ensure that functions have at most one return and one

// unreachable instruction in them.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H

#define LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H

#include "llvm/IR/PassManager.h"

#include "llvm/Pass.h"

namespace llvm {

class UnifyFunctionExitNodesLegacyPass : public FunctionPass {

public:

  static char ID; // Pass identification, replacement for typeid

  UnifyFunctionExitNodesLegacyPass();

  // We can preserve non-critical-edgeness when we unify function exit nodes

  void getAnalysisUsage(AnalysisUsage &AU) const override;

  bool runOnFunction(Function &F) override;

};

Pass *createUnifyFunctionExitNodesPass();

class UnifyFunctionExitNodesPass

    : public PassInfoMixin<UnifyFunctionExitNodesPass> {

public:

  PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);

};

} // end namespace llvm

#endif // LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H