| // Copyright (c) 2019 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_FUZZ_FUZZER_PASS_APPLY_ID_SYNONYMS_H_ |
| #define SOURCE_FUZZ_FUZZER_PASS_APPLY_ID_SYNONYMS_H_ |
| |
| #include "source/fuzz/fuzzer_pass.h" |
| #include "source/opt/ir_context.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| // A pass that replaces ids with other ids, or accesses into structures, that |
| // are known to hold the same values. |
| class FuzzerPassApplyIdSynonyms : public FuzzerPass { |
| public: |
| FuzzerPassApplyIdSynonyms(opt::IRContext* ir_context, |
| TransformationContext* transformation_context, |
| FuzzerContext* fuzzer_context, |
| protobufs::TransformationSequence* transformations, |
| bool ignore_inapplicable_transformations); |
| |
| void Apply() override; |
| |
| private: |
| // Returns true if uses of |dd1| can be replaced with |dd2| and vice-versa |
| // with respect to the type. Concretely, returns true if |dd1| and |dd2| have |
| // the same type or both |dd1| and |dd2| are either a numerical or a vector |
| // type of integral components with possibly different signedness. |
| bool DataDescriptorsHaveCompatibleTypes(spv::Op opcode, |
| uint32_t use_in_operand_index, |
| const protobufs::DataDescriptor& dd1, |
| const protobufs::DataDescriptor& dd2); |
| }; |
| |
| } // namespace fuzz |
| } // namespace spvtools |
| |
| #endif // SOURCE_FUZZ_FUZZER_PASS_APPLY_ID_SYNONYMS_H_ |