79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
//===- MachineUniformityAnalysis.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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//
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/// \file
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/// \brief Machine IR instance of the generic uniformity analysis
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MACHINEUNIFORMITYANALYSIS_H
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#define LLVM_CODEGEN_MACHINEUNIFORMITYANALYSIS_H
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#include "llvm/ADT/GenericUniformityInfo.h"
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#include "llvm/CodeGen/MachineCycleAnalysis.h"
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#include "llvm/CodeGen/MachineDominators.h"
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#include "llvm/CodeGen/MachinePassManager.h"
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#include "llvm/CodeGen/MachineSSAContext.h"
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namespace llvm {
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extern template class GenericUniformityInfo<MachineSSAContext>;
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using MachineUniformityInfo = GenericUniformityInfo<MachineSSAContext>;
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/// \brief Compute uniformity information for a Machine IR function.
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///
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/// If \p HasBranchDivergence is false, produces a dummy result which assumes
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/// everything is uniform.
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LLVM_ABI MachineUniformityInfo computeMachineUniformityInfo(
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MachineFunction &F, const MachineCycleInfo &CI,
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const MachineDominatorTree &DT, bool HasBranchDivergence);
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/// Legacy analysis pass which computes a \ref MachineUniformityInfo.
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class LLVM_ABI MachineUniformityAnalysisPass : public MachineFunctionPass {
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MachineUniformityInfo UI;
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public:
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static char ID;
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MachineUniformityAnalysisPass();
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MachineUniformityInfo &getUniformityInfo() { return UI; }
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const MachineUniformityInfo &getUniformityInfo() const { return UI; }
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bool runOnMachineFunction(MachineFunction &F) override;
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void getAnalysisUsage(AnalysisUsage &AU) const override;
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void print(raw_ostream &OS, const Module *M = nullptr) const override;
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// TODO: verify analysis
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};
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class MachineUniformityAnalysis
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: public AnalysisInfoMixin<MachineUniformityAnalysis> {
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friend AnalysisInfoMixin<MachineUniformityAnalysis>;
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static AnalysisKey Key;
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public:
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using Result = MachineUniformityInfo;
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LLVM_ABI Result run(MachineFunction &MF,
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MachineFunctionAnalysisManager &MFAM);
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};
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class MachineUniformityPrinterPass
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: public RequiredPassInfoMixin<MachineUniformityPrinterPass> {
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raw_ostream &OS;
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public:
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explicit MachineUniformityPrinterPass(raw_ostream &OS) : OS(OS) {}
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LLVM_ABI PreservedAnalyses run(MachineFunction &MF,
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MachineFunctionAnalysisManager &MFAM);
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};
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} // namespace llvm
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#endif // LLVM_CODEGEN_MACHINEUNIFORMITYANALYSIS_H
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