| // Copyright (c) 2018 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef SOURCE_REDUCE_CHANGE_OPERAND_TO_UNDEF_REDUCTION_OPPORTUNITY_H_ |
| #define SOURCE_REDUCE_CHANGE_OPERAND_TO_UNDEF_REDUCTION_OPPORTUNITY_H_ |
| |
| #include "source/opt/instruction.h" |
| #include "source/reduce/reduction_opportunity.h" |
| #include "spirv-tools/libspirv.h" |
| |
| namespace spvtools { |
| namespace reduce { |
| |
| // An opportunity to replace an id operand of an instruction with undef. |
| class ChangeOperandToUndefReductionOpportunity : public ReductionOpportunity { |
| public: |
| // Constructs the opportunity to replace operand |operand_index| of |inst| |
| // with undef. |
| ChangeOperandToUndefReductionOpportunity(opt::IRContext* context, |
| opt::Instruction* inst, |
| uint32_t operand_index) |
| : context_(context), |
| inst_(inst), |
| operand_index_(operand_index), |
| original_id_(inst->GetOperand(operand_index).words[0]) {} |
| |
| bool PreconditionHolds() override; |
| |
| protected: |
| void Apply() override; |
| |
| private: |
| opt::IRContext* context_; |
| opt::Instruction* const inst_; |
| const uint32_t operand_index_; |
| const uint32_t original_id_; |
| }; |
| |
| } // namespace reduce |
| } // namespace spvtools |
| |
| #endif // SOURCE_REDUCE_CHANGE_OPERAND_TO_UNDEF_REDUCTION_OPPORTUNITY_H_ |