|
| 1 | +/****************************************************************************** |
| 2 | + * Copyright (c) 2025 Fabian Schiebel. |
| 3 | + * All rights reserved. This program and the accompanying materials are made |
| 4 | + * available under the terms of LICENSE.txt. |
| 5 | + * |
| 6 | + * Contributors: |
| 7 | + * Fabian Schiebel and others |
| 8 | + *****************************************************************************/ |
| 9 | + |
| 10 | +#ifndef PHASAR_PHASARLLVM_POINTER_ALIASANALYSISVIEW_H |
| 11 | +#define PHASAR_PHASARLLVM_POINTER_ALIASANALYSISVIEW_H |
| 12 | + |
| 13 | +#include "phasar/Pointer/AliasAnalysisType.h" |
| 14 | +#include "phasar/Pointer/AliasResult.h" |
| 15 | + |
| 16 | +#include <memory> |
| 17 | +#include <type_traits> |
| 18 | + |
| 19 | +namespace llvm { |
| 20 | +class Value; |
| 21 | +class DataLayout; |
| 22 | +class Function; |
| 23 | +} // namespace llvm |
| 24 | + |
| 25 | +namespace psr { |
| 26 | +class LLVMProjectIRDB; |
| 27 | + |
| 28 | +class FunctionAliasView { |
| 29 | +public: |
| 30 | + template <typename T> |
| 31 | + using AliasCallbackTy = AliasResult (*)(T *, const llvm::Value *, |
| 32 | + const llvm::Value *, |
| 33 | + const llvm::DataLayout &); |
| 34 | + |
| 35 | + [[nodiscard]] AliasResult alias(const llvm::Value *V, const llvm::Value *Rep, |
| 36 | + const llvm::DataLayout &DL) { |
| 37 | + return Alias(Context, V, Rep, DL); |
| 38 | + } |
| 39 | + |
| 40 | + template < |
| 41 | + typename T, typename AliasFn, |
| 42 | + typename = std:: enable_if_t<std::is_empty_v<AliasFn> && |
| 43 | + std::is_default_constructible_v<AliasFn>>> |
| 44 | + constexpr FunctionAliasView(T *Context, AliasFn /*Alias*/) noexcept |
| 45 | + : Context(Context), Alias(&callAlias<T, AliasFn>) {} |
| 46 | + |
| 47 | +private: |
| 48 | + template <typename T, typename AliasFn> |
| 49 | + static AliasResult callAlias(void *Context, const llvm::Value *V1, |
| 50 | + const llvm::Value *V2, |
| 51 | + const llvm::DataLayout &DL) { |
| 52 | + return AliasFn{}(static_cast<T *>(Context), V1, V2, DL); |
| 53 | + } |
| 54 | + |
| 55 | + void *Context{}; |
| 56 | + AliasCallbackTy<void> Alias{}; |
| 57 | +}; |
| 58 | + |
| 59 | +class AliasAnalysisView { |
| 60 | +public: |
| 61 | + constexpr AliasAnalysisView(AliasAnalysisType PATy) noexcept : PATy(PATy) {} |
| 62 | + |
| 63 | + virtual ~AliasAnalysisView() = default; |
| 64 | + |
| 65 | + [[nodiscard]] FunctionAliasView getAAResults(const llvm::Function *F) { |
| 66 | + assert(F != nullptr); |
| 67 | + return doGetAAResults(F); |
| 68 | + } |
| 69 | + |
| 70 | + void erase(llvm::Function *F) noexcept { |
| 71 | + assert(F != nullptr); |
| 72 | + doErase(F); |
| 73 | + } |
| 74 | + |
| 75 | + void clear() noexcept { doClear(); } |
| 76 | + |
| 77 | + [[nodiscard]] constexpr AliasAnalysisType |
| 78 | + getPointerAnalysisType() const noexcept { |
| 79 | + return PATy; |
| 80 | + }; |
| 81 | + |
| 82 | + [[nodiscard]] static std::unique_ptr<AliasAnalysisView> |
| 83 | + create(LLVMProjectIRDB &IRDB, bool UseLazyEvaluation, AliasAnalysisType PATy); |
| 84 | + |
| 85 | +private: |
| 86 | + static std::unique_ptr<AliasAnalysisView> |
| 87 | + createLLVMBasedAnalysis(LLVMProjectIRDB &IRDB, bool UseLazyEvaluation, |
| 88 | + AliasAnalysisType PATy); |
| 89 | + |
| 90 | + virtual FunctionAliasView doGetAAResults(const llvm::Function *F) = 0; |
| 91 | + virtual void doErase(llvm::Function *F) noexcept = 0; |
| 92 | + virtual void doClear() noexcept = 0; |
| 93 | + |
| 94 | + AliasAnalysisType PATy{}; |
| 95 | +}; |
| 96 | + |
| 97 | +} // namespace psr |
| 98 | + |
| 99 | +#endif // PHASAR_PHASARLLVM_POINTER_ALIASANALYSISVIEW_H |
0 commit comments