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38 lines
1.2 KiB
38 lines
1.2 KiB
//===-- ARMHazardRecognizer.h - ARM Hazard Recognizers ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines hazard recognizers for scheduling ARM functions.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_ARM_ARMHAZARDRECOGNIZER_H
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#define LLVM_LIB_TARGET_ARM_ARMHAZARDRECOGNIZER_H
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#include "llvm/CodeGen/ScheduleHazardRecognizer.h"
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namespace llvm {
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// Hazards related to FP MLx instructions
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class ARMHazardRecognizerFPMLx : public ScheduleHazardRecognizer {
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MachineInstr *LastMI = nullptr;
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unsigned FpMLxStalls = 0;
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public:
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ARMHazardRecognizerFPMLx() : ScheduleHazardRecognizer() { MaxLookAhead = 1; }
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HazardType getHazardType(SUnit *SU, int Stalls) override;
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void Reset() override;
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void EmitInstruction(SUnit *SU) override;
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void AdvanceCycle() override;
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void RecedeCycle() override;
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};
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} // end namespace llvm
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#endif
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