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//=- 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
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