Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- ArgumentPromotion.h - Promote by-reference arguments -----*- 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

//

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

#ifndef LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H

#define LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H

#include "llvm/Analysis/CGSCCPassManager.h"

#include "llvm/Analysis/LazyCallGraph.h"

#include "llvm/IR/PassManager.h"

namespace llvm {

/// Argument promotion pass.

///

/// This pass walks the functions in each SCC and for each one tries to

/// transform it and all of its callers to replace indirect arguments with

/// direct (by-value) arguments.

class ArgumentPromotionPass : public PassInfoMixin<ArgumentPromotionPass> {

  unsigned MaxElements;

public:

  ArgumentPromotionPass(unsigned MaxElements = 2u) : MaxElements(MaxElements) {}

  PreservedAnalyses run(LazyCallGraph::SCC &C, CGSCCAnalysisManager &AM,

                        LazyCallGraph &CG, CGSCCUpdateResult &UR);

};

} // end namespace llvm

#endif // LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H