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1//===- AMDGPUAliasAnalysis --------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8/// \file9/// This is the AMGPU address space based alias analysis pass.10//===----------------------------------------------------------------------===//11 12#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUALIASANALYSIS_H13#define LLVM_LIB_TARGET_AMDGPU_AMDGPUALIASANALYSIS_H14 15#include "llvm/Analysis/AliasAnalysis.h"16#include "llvm/IR/Module.h"17 18namespace llvm {19 20class DataLayout;21class MemoryLocation;22 23/// A simple AA result that uses TBAA metadata to answer queries.24class AMDGPUAAResult : public AAResultBase {25 const DataLayout &DL;26 27public:28 explicit AMDGPUAAResult(const DataLayout &DL) : DL(DL) {}29 AMDGPUAAResult(AMDGPUAAResult &&Arg)30 : AAResultBase(std::move(Arg)), DL(Arg.DL) {}31 32 /// Handle invalidation events from the new pass manager.33 ///34 /// By definition, this result is stateless and so remains valid.35 bool invalidate(Function &, const PreservedAnalyses &,36 FunctionAnalysisManager::Invalidator &Inv) {37 return false;38 }39 40 AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,41 AAQueryInfo &AAQI, const Instruction *CtxI);42 ModRefInfo getModRefInfoMask(const MemoryLocation &Loc, AAQueryInfo &AAQI,43 bool IgnoreLocals);44};45 46/// Analysis pass providing a never-invalidated alias analysis result.47class AMDGPUAA : public AnalysisInfoMixin<AMDGPUAA> {48 friend AnalysisInfoMixin<AMDGPUAA>;49 50 static AnalysisKey Key;51 52public:53 using Result = AMDGPUAAResult;54 55 AMDGPUAAResult run(Function &F, AnalysisManager<Function> &AM) {56 return AMDGPUAAResult(F.getDataLayout());57 }58};59 60/// Legacy wrapper pass to provide the AMDGPUAAResult object.61class AMDGPUAAWrapperPass : public ImmutablePass {62 std::unique_ptr<AMDGPUAAResult> Result;63 64public:65 static char ID;66 67 AMDGPUAAWrapperPass();68 69 AMDGPUAAResult &getResult() { return *Result; }70 const AMDGPUAAResult &getResult() const { return *Result; }71 72 bool doInitialization(Module &M) override {73 Result.reset(new AMDGPUAAResult(M.getDataLayout()));74 return false;75 }76 77 bool doFinalization(Module &M) override {78 Result.reset();79 return false;80 }81 82 void getAnalysisUsage(AnalysisUsage &AU) const override;83};84 85// Wrapper around ExternalAAWrapperPass so that the default constructor gets the86// callback.87class AMDGPUExternalAAWrapper : public ExternalAAWrapperPass {88public:89 static char ID;90 91 AMDGPUExternalAAWrapper() : ExternalAAWrapperPass(92 [](Pass &P, Function &, AAResults &AAR) {93 if (auto *WrapperPass = P.getAnalysisIfAvailable<AMDGPUAAWrapperPass>())94 AAR.addAAResult(WrapperPass->getResult());95 }) {}96};97 98} // end namespace llvm99 100#endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUALIASANALYSIS_H101