1//===-------------------- NVPTXAliasAnalysis.h ------------------*- 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-exception
6//
7//===----------------------------------------------------------------------===//
8/// \file
9/// This is the NVPTX address space based alias analysis pass.
10//===----------------------------------------------------------------------===//
11
12#ifndef LLVM_LIB_TARGET_NVPTX_NVPTXALIASANALYSIS_H
13#define LLVM_LIB_TARGET_NVPTX_NVPTXALIASANALYSIS_H
14
15#include "llvm/Analysis/AliasAnalysis.h"
16
17namespace llvm {
18
19class MemoryLocation;
20
21class NVPTXAAResult : public AAResultBase {
22public:
23 NVPTXAAResult() {}
24 NVPTXAAResult(NVPTXAAResult &&Arg) : AAResultBase(std::move(Arg)) {}
25
26 /// Handle invalidation events from the new pass manager.
27 ///
28 /// By definition, this result is stateless and so remains valid.
29 bool invalidate(Function &, const PreservedAnalyses &,
30 FunctionAnalysisManager::Invalidator &Inv) {
31 return false;
32 }
33
34 AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
35 AAQueryInfo &AAQI, const Instruction *CtxI = nullptr);
36
37 ModRefInfo getModRefInfoMask(const MemoryLocation &Loc, AAQueryInfo &AAQI,
38 bool IgnoreLocals);
39};
40
41/// Analysis pass providing a never-invalidated alias analysis result.
42class NVPTXAA : public AnalysisInfoMixin<NVPTXAA> {
43 friend AnalysisInfoMixin<NVPTXAA>;
44
45 static AnalysisKey Key;
46
47public:
48 using Result = NVPTXAAResult;
49
50 NVPTXAAResult run(Function &F, AnalysisManager<Function> &AM) {
51 return NVPTXAAResult();
52 }
53};
54
55/// Legacy wrapper pass to provide the NVPTXAAResult object.
56class NVPTXAAWrapperPass : public ImmutablePass {
57 std::unique_ptr<NVPTXAAResult> Result;
58
59public:
60 static char ID;
61
62 NVPTXAAWrapperPass();
63
64 NVPTXAAResult &getResult() { return *Result; }
65 const NVPTXAAResult &getResult() const { return *Result; }
66
67 bool doInitialization(Module &M) override {
68 Result.reset(p: new NVPTXAAResult());
69 return false;
70 }
71
72 bool doFinalization(Module &M) override {
73 Result.reset();
74 return false;
75 }
76
77 void getAnalysisUsage(AnalysisUsage &AU) const override;
78};
79
80// Wrapper around ExternalAAWrapperPass so that the default
81// constructor gets the callback.
82class NVPTXExternalAAWrapper : public ExternalAAWrapperPass {
83public:
84 static char ID;
85
86 NVPTXExternalAAWrapper()
87 : ExternalAAWrapperPass([](Pass &P, Function &, AAResults &AAR) {
88 if (auto *WrapperPass =
89 P.getAnalysisIfAvailable<NVPTXAAWrapperPass>())
90 AAR.addAAResult(AAResult&: WrapperPass->getResult());
91 }) {}
92};
93
94ImmutablePass *createNVPTXAAWrapperPass();
95void initializeNVPTXAAWrapperPassPass(PassRegistry &);
96ImmutablePass *createNVPTXExternalAAWrapperPass();
97void initializeNVPTXExternalAAWrapperPass(PassRegistry &);
98
99} // end namespace llvm
100
101#endif // LLVM_LIB_TARGET_NVPTX_NVPTXALIASANALYSIS_H
102

source code of llvm/lib/Target/NVPTX/NVPTXAliasAnalysis.h