1 // Copyright (c) 2019 Google LLC 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_REDUCE_REMOVE_FUNCTION_REDUCTION_OPPORTUNITY_H_ 16 #define SOURCE_REDUCE_REMOVE_FUNCTION_REDUCTION_OPPORTUNITY_H_ 17 18 #include "source/opt/function.h" 19 #include "source/reduce/reduction_opportunity.h" 20 21 namespace spvtools { 22 namespace reduce { 23 24 // An opportunity to remove an unreferenced function. 25 class RemoveFunctionReductionOpportunity : public ReductionOpportunity { 26 public: 27 // Creates an opportunity to remove |function| from the module represented by 28 // |context|. RemoveFunctionReductionOpportunity(opt::IRContext * context,opt::Function * function)29 RemoveFunctionReductionOpportunity(opt::IRContext* context, 30 opt::Function* function) 31 : context_(context), function_(function) {} 32 33 bool PreconditionHolds() override; 34 35 protected: 36 void Apply() override; 37 38 private: 39 // The IR context for the module under analysis. 40 opt::IRContext* context_; 41 42 // The function that can be removed. 43 opt::Function* function_; 44 }; 45 46 } // namespace reduce 47 } // namespace spvtools 48 49 #endif // SOURCE_REDUCE_REMOVE_FUNCTION_REDUCTION_OPPORTUNITY_H_ 50