1 // Copyright (c) 2018 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_OPNAME_INSTRUCTION_REDUCTION_PASS_H_ 16 #define SOURCE_REDUCE_REMOVE_OPNAME_INSTRUCTION_REDUCTION_PASS_H_ 17 18 #include "reduction_pass.h" 19 20 namespace spvtools { 21 namespace reduce { 22 23 // A reduction pass for removing OpName instructions. As well as making the 24 // module smaller, removing an OpName instruction may create opportunities to 25 // remove the instruction that create the id to which the OpName applies. 26 class RemoveOpNameInstructionReductionPass : public ReductionPass { 27 public: 28 // Creates the reduction pass in the context of the given target environment 29 // |target_env| RemoveOpNameInstructionReductionPass(const spv_target_env target_env)30 explicit RemoveOpNameInstructionReductionPass(const spv_target_env target_env) 31 : ReductionPass(target_env) {} 32 33 ~RemoveOpNameInstructionReductionPass() override = default; 34 35 // The name of this pass. 36 std::string GetName() const final; 37 38 protected: 39 // Finds all opportunities for removing opName instructions in the 40 // given module. 41 std::vector<std::unique_ptr<ReductionOpportunity>> GetAvailableOpportunities( 42 opt::IRContext* context) const final; 43 44 private: 45 }; 46 47 } // namespace reduce 48 } // namespace spvtools 49 50 #endif // SOURCE_REDUCE_REMOVE_OpName_INSTRUCTION_REDUCTION_PASS_H_ 51