1 // Copyright (c) 2017 Pierre Moreau 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SOURCE_OPT_REMOVE_DUPLICATES_PASS_H_ 16 #define SOURCE_OPT_REMOVE_DUPLICATES_PASS_H_ 17 18 #include <unordered_map> 19 #include <vector> 20 21 #include "source/opt/decoration_manager.h" 22 #include "source/opt/def_use_manager.h" 23 #include "source/opt/ir_context.h" 24 #include "source/opt/module.h" 25 #include "source/opt/pass.h" 26 27 namespace spvtools { 28 namespace opt { 29 30 using IdDecorationsList = 31 std::unordered_map<uint32_t, std::vector<Instruction*>>; 32 33 // See optimizer.hpp for documentation. 34 class RemoveDuplicatesPass : public Pass { 35 public: 36 const char* name() const override { return "remove-duplicates"; } 37 Status Process() override; 38 39 // TODO(pierremoreau): Move this function somewhere else (e.g. pass.h or 40 // within the type manager) 41 // Returns whether two types are equal, and have the same decorations. 42 static bool AreTypesEqual(const Instruction& inst1, const Instruction& inst2, 43 IRContext* context); 44 45 private: 46 // Remove duplicate capabilities from the module 47 // 48 // Returns true if the module was modified, false otherwise. 49 bool RemoveDuplicateCapabilities() const; 50 // Remove duplicate extended instruction imports from the module 51 // 52 // Returns true if the module was modified, false otherwise. 53 bool RemoveDuplicatesExtInstImports() const; 54 // Remove duplicate types from the module 55 // 56 // Returns true if the module was modified, false otherwise. 57 bool RemoveDuplicateTypes() const; 58 // Remove duplicate decorations from the module 59 // 60 // Returns true if the module was modified, false otherwise. 61 bool RemoveDuplicateDecorations() const; 62 }; 63 64 } // namespace opt 65 } // namespace spvtools 66 67 #endif // SOURCE_OPT_REMOVE_DUPLICATES_PASS_H_ 68
