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//===-------------------- NVPTXAliasAnalysis.h ------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file
/// This is the NVPTX address space based alias analysis pass.
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_NVPTX_NVPTXALIASANALYSIS_H
#define LLVM_LIB_TARGET_NVPTX_NVPTXALIASANALYSIS_H
#include "llvm/Analysis/AliasAnalysis.h"
namespace llvm {
class MemoryLocation;
class NVPTXAAResult : public AAResultBase {
public:
NVPTXAAResult() {}
NVPTXAAResult(NVPTXAAResult &&Arg) : AAResultBase(std::move(Arg)) {}
/// Handle invalidation events from the new pass manager.
///
/// By definition, this result is stateless and so remains valid.
bool invalidate(Function &, const PreservedAnalyses &,
FunctionAnalysisManager::Invalidator &Inv) {
return false;
}
AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
AAQueryInfo &AAQI, const Instruction *CtxI = nullptr);
ModRefInfo getModRefInfoMask(const MemoryLocation &Loc, AAQueryInfo &AAQI,
bool IgnoreLocals);
};
/// Analysis pass providing a never-invalidated alias analysis result.
class NVPTXAA : public AnalysisInfoMixin<NVPTXAA> {
friend AnalysisInfoMixin<NVPTXAA>;
static AnalysisKey Key;
public:
using Result = NVPTXAAResult;
NVPTXAAResult run(Function &F, AnalysisManager<Function> &AM) {
return NVPTXAAResult();
}
};
/// Legacy wrapper pass to provide the NVPTXAAResult object.
class NVPTXAAWrapperPass : public ImmutablePass {
std::unique_ptr<NVPTXAAResult> Result;
public:
static char ID;
NVPTXAAWrapperPass();
NVPTXAAResult &getResult() { return *Result; }
const NVPTXAAResult &getResult() const { return *Result; }
bool doInitialization(Module &M) override {
Result.reset(new NVPTXAAResult());
return false;
}
bool doFinalization(Module &M) override {
Result.reset();
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override;
};
// Wrapper around ExternalAAWrapperPass so that the default
// constructor gets the callback.
class NVPTXExternalAAWrapper : public ExternalAAWrapperPass {
public:
static char ID;
NVPTXExternalAAWrapper()
: ExternalAAWrapperPass([](Pass &P, Function &, AAResults &AAR) {
if (auto *WrapperPass =
P.getAnalysisIfAvailable<NVPTXAAWrapperPass>())
AAR.addAAResult(WrapperPass->getResult());
}) {}
};
ImmutablePass *createNVPTXAAWrapperPass();
void initializeNVPTXAAWrapperPassPass(PassRegistry &);
ImmutablePass *createNVPTXExternalAAWrapperPass();
void initializeNVPTXExternalAAWrapperPass(PassRegistry &);
} // end namespace llvm
#endif // LLVM_LIB_TARGET_NVPTX_NVPTXALIASANALYSIS_H
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