| // Copyright (c) 2016 Google Inc. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a |
| // copy of this software and/or associated documentation files (the |
| // "Materials"), to deal in the Materials without restriction, including |
| // without limitation the rights to use, copy, modify, merge, publish, |
| // distribute, sublicense, and/or sell copies of the Materials, and to |
| // permit persons to whom the Materials are furnished to do so, subject to |
| // the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included |
| // in all copies or substantial portions of the Materials. |
| // |
| // MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS |
| // KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS |
| // SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT |
| // https://www.khronos.org/registry/ |
| // |
| // THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| // MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| |
| #ifndef LIBSPIRV_OPT_TYPE_MANAGER_H_ |
| #define LIBSPIRV_OPT_TYPE_MANAGER_H_ |
| |
| #include <memory> |
| #include <unordered_map> |
| #include <unordered_set> |
| |
| #include "module.h" |
| #include "types.h" |
| |
| namespace spvtools { |
| namespace opt { |
| namespace analysis { |
| |
| // A class for managing the SPIR-V type hierarchy. |
| class TypeManager { |
| public: |
| using IdToTypeMap = std::unordered_map<uint32_t, std::unique_ptr<Type>>; |
| using TypeToIdMap = std::unordered_map<const Type*, uint32_t>; |
| using ForwardPointerVector = std::vector<std::unique_ptr<ForwardPointer>>; |
| |
| inline explicit TypeManager(const spvtools::ir::Module& module); |
| TypeManager(const TypeManager&) = delete; |
| TypeManager(TypeManager&&) = delete; |
| TypeManager& operator=(const TypeManager&) = delete; |
| TypeManager& operator=(TypeManager&&) = delete; |
| |
| // Returns the type for the given type |id|. Returns nullptr if the given |id| |
| // does not define a type. |
| Type* GetType(uint32_t id) const; |
| // Returns the id for the given |type|. Returns 0 if can not find the given |
| // |type|. |
| uint32_t GetId(const Type* type) const; |
| // Returns the number of types hold in this manager. |
| size_t NumTypes() const { return id_to_type_.size(); } |
| |
| // Returns the forward pointer type at the given |index|. |
| ForwardPointer* GetForwardPointer(uint32_t index) const; |
| // Returns the number of forward pointer types hold in this manager. |
| size_t NumForwardPointers() const { return forward_pointers_.size(); } |
| |
| private: |
| // Analyzes the types and decorations on types in the given |module|. |
| void AnalyzeTypes(const spvtools::ir::Module& module); |
| |
| // Creates and returns a type from the given SPIR-V |inst|. Returns nullptr if |
| // the given instruction is not for defining a type. |
| Type* RecordIfTypeDefinition(const spvtools::ir::Instruction& inst); |
| // Attaches the decoration encoded in |inst| to a type. Does nothing if the |
| // given instruction is not a decoration instruction or not decorating a type. |
| void AttachIfTypeDecoration(const spvtools::ir::Instruction& inst); |
| |
| IdToTypeMap id_to_type_; // Mapping from ids to their type representations. |
| TypeToIdMap type_to_id_; // Mapping from types to their defining ids. |
| ForwardPointerVector forward_pointers_; // All forward pointer declarations. |
| // All unresolved forward pointer declarations. |
| // Refers the contents in the above vector. |
| std::unordered_set<ForwardPointer*> unresolved_forward_pointers_; |
| }; |
| |
| inline TypeManager::TypeManager(const spvtools::ir::Module& module) { |
| AnalyzeTypes(module); |
| } |
| |
| } // namespace analysis |
| } // namespace opt |
| } // namespace spvtools |
| |
| #endif // LIBSPIRV_OPT_TYPE_MANAGER_H_ |