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13e8f305a9
This patch also makes Stage::isReady() a const method. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332443 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//===---------------------- Stage.h -----------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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/// \file
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///
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/// This file defines a stage.
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/// A chain of stages compose an instruction pipeline.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_MCA_STAGE_H
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#define LLVM_TOOLS_LLVM_MCA_STAGE_H
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#include <set>
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namespace mca {
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class HWEventListener;
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class InstRef;
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class Stage {
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std::set<HWEventListener *> Listeners;
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Stage(const Stage &Other) = delete;
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Stage &operator=(const Stage &Other) = delete;
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public:
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Stage();
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virtual ~Stage() = default;
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/// Called prior to preExecute to ensure that the stage can operate.
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/// TODO: Remove this logic once backend::run and backend::runCycle become
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/// one routine.
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virtual bool isReady() const { return true; }
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/// Called as a setup phase to prepare for the main stage execution.
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virtual void preExecute(const InstRef &IR) {}
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/// Called as a cleanup and finalization phase after main stage execution.
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virtual void postExecute(const InstRef &IR) {}
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/// The primary action that this stage performs.
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virtual bool execute(InstRef &IR) = 0;
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/// Add a listener to receive callbaks during the execution of this stage.
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void addListener(HWEventListener *Listener);
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};
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} // namespace mca
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#endif // LLVM_TOOLS_LLVM_MCA_STAGE_H
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