Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- LoopIdiomRecognize.h - Loop Idiom Recognize Pass ---------*- 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 implements an idiom recognizer that transforms simple loops into a

// non-loop form.  In cases that this kicks in, it can be a significant

// performance win.

//

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

#ifndef LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H

#define LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H

#include "llvm/Analysis/LoopAnalysisManager.h"

#include "llvm/IR/PassManager.h"

namespace llvm {

class Loop;

class LPMUpdater;

/// Options to disable Loop Idiom Recognize, which can be shared with other

/// passes.

struct DisableLIRP {

  /// When true, the entire pass is disabled.

  static bool All;

  /// When true, Memset is disabled.

  static bool Memset;

  /// When true, Memcpy is disabled.

  static bool Memcpy;

};

/// Performs Loop Idiom Recognize Pass.

class LoopIdiomRecognizePass : public PassInfoMixin<LoopIdiomRecognizePass> {

public:

  PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,

                        LoopStandardAnalysisResults &AR, LPMUpdater &U);

};

} // end namespace llvm

#endif // LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H