60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
//===------------------- AMDGPUCustomBehaviour.h ----------------*-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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/// \file
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///
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/// This file defines the AMDGPUCustomBehaviour class which inherits from
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/// CustomBehaviour. This class is used by the tool llvm-mca to enforce
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/// target specific behaviour that is not expressed well enough in the
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/// scheduling model for mca to enforce it automatically.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AMDGPU_MCA_AMDGPUCUSTOMBEHAVIOUR_H
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#define LLVM_LIB_TARGET_AMDGPU_MCA_AMDGPUCUSTOMBEHAVIOUR_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/MCA/CustomBehaviour.h"
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#include "llvm/Support/TargetParser.h"
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namespace llvm {
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namespace mca {
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class AMDGPUInstrPostProcess : public InstrPostProcess {
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public:
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AMDGPUInstrPostProcess(const MCSubtargetInfo &STI, const MCInstrInfo &MCII)
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: InstrPostProcess(STI, MCII) {}
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~AMDGPUInstrPostProcess() {}
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void postProcessInstruction(std::unique_ptr<mca::Instruction> &Inst,
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const MCInst &MCI) override {}
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};
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class AMDGPUCustomBehaviour : public CustomBehaviour {
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public:
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AMDGPUCustomBehaviour(const MCSubtargetInfo &STI,
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const mca::SourceMgr &SrcMgr, const MCInstrInfo &MCII);
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~AMDGPUCustomBehaviour() {}
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/// This method is used to determine if an instruction
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/// should be allowed to be dispatched. The return value is
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/// how many cycles until the instruction can be dispatched.
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/// This method is called after MCA has already checked for
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/// register and hardware dependencies so this method should only
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/// implement custom behaviour and dependencies that are not picked up
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/// by MCA naturally.
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unsigned checkCustomHazard(ArrayRef<mca::InstRef> IssuedInst,
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const mca::InstRef &IR) override;
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};
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} // namespace mca
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} // namespace llvm
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#endif
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