Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//=- llvm/CodeGen/MultiHazardRecognizer.h - Scheduling Support ----*- 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 file implements the MultiHazardRecognizer class, which is a wrapper

// for a set of ScheduleHazardRecognizer instances

//

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

#ifndef LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H

#define LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H

#include "llvm/ADT/SmallVector.h"

#include "llvm/CodeGen/ScheduleHazardRecognizer.h"

namespace llvm {

class MachineInstr;

class SUnit;

class MultiHazardRecognizer : public ScheduleHazardRecognizer {

  SmallVector<std::unique_ptr<ScheduleHazardRecognizer>, 4> Recognizers;

public:

  MultiHazardRecognizer() = default;

  void AddHazardRecognizer(std::unique_ptr<ScheduleHazardRecognizer> &&);

  bool atIssueLimit() const override;

  HazardType getHazardType(SUnit *, int Stalls = 0) override;

  void Reset() override;

  void EmitInstruction(SUnit *) override;

  void EmitInstruction(MachineInstr *) override;

  unsigned PreEmitNoops(SUnit *) override;

  unsigned PreEmitNoops(MachineInstr *) override;

  bool ShouldPreferAnother(SUnit *) override;

  void AdvanceCycle() override;

  void RecedeCycle() override;

  void EmitNoop() override;

};

} // end namespace llvm

#endif // LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H