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_INSTRUCTION_REDUCTION_OPPORTUNITY_H_ 16 #define SOURCE_REDUCE_REMOVE_INSTRUCTION_REDUCTION_OPPORTUNITY_H_ 17 18 #include "reduction_opportunity.h" 19 #include "source/opt/instruction.h" 20 21 namespace spvtools { 22 namespace reduce { 23 24 using namespace opt; 25 26 // Captures the opportunity to remove an instruction from the SPIR-V module. 27 class RemoveInstructionReductionOpportunity : public ReductionOpportunity { 28 public: 29 // Constructs the opportunity to remove |inst|. 30 explicit RemoveInstructionReductionOpportunity(Instruction* inst) 31 : inst_(inst) {} 32 33 // This kind of opportunity can be unconditionally applied. 34 bool PreconditionHolds() override; 35 36 protected: 37 // Remove the instruction. 38 void Apply() override; 39 40 private: 41 Instruction* inst_; 42 }; 43 44 } // namespace reduce 45 } // namespace spvtools 46 47 #endif // SOURCE_REDUCE_REMOVE_INSTRUCTION_REDUCTION_OPPORTUNITY_H_ 48
