| // Copyright (c) 2020 Stefano Milizia |
| // Copyright (c) 2020 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_TRANSFORMATION_RECORD_SYNONYMOUS_CONSTANTS_H |
| #define SOURCE_FUZZ_TRANSFORMATION_RECORD_SYNONYMOUS_CONSTANTS_H |
| |
| #include "source/fuzz/transformation.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| class TransformationRecordSynonymousConstants : public Transformation { |
| public: |
| explicit TransformationRecordSynonymousConstants( |
| const protobufs::TransformationRecordSynonymousConstants& message); |
| |
| TransformationRecordSynonymousConstants(uint32_t constant1_id, |
| uint32_t constant2_id); |
| |
| // - |message_.constant_id| and |message_.synonym_id| are distinct ids |
| // of constants |
| // - |message_.constant_id| and |message_.synonym_id| refer to constants |
| // that are equal or equivalent. |
| // TODO(https://github.com/KhronosGroup/SPIRV-Tools/issues/3536): Signed and |
| // unsigned integers are currently considered non-equivalent |
| // Two integers with the same width and value are equal, even if one is |
| // signed and the other is not. |
| // Constants are equivalent: |
| // - if both of them represent zero-like values of the same type |
| // - if they are composite constants with the same type and their |
| // components are pairwise equivalent. |
| bool IsApplicable( |
| opt::IRContext* ir_context, |
| const TransformationContext& transformation_context) const override; |
| |
| // Adds the fact that |message_.constant_id| and |message_.synonym_id| |
| // are synonyms to the fact manager. The module is not changed. |
| void Apply(opt::IRContext* ir_context, |
| TransformationContext* transformation_context) const override; |
| |
| protobufs::Transformation ToMessage() const override; |
| |
| private: |
| protobufs::TransformationRecordSynonymousConstants message_; |
| |
| // Returns true if the two given constants are equivalent |
| // (the description of IsApplicable specifies the conditions they must satisfy |
| // to be considered equivalent) |
| static bool AreEquivalentConstants(opt::IRContext* ir_context, |
| uint32_t constant_id1, |
| uint32_t constant_id2); |
| }; |
| |
| } // namespace fuzz |
| } // namespace spvtools |
| |
| #endif // SOURCE_FUZZ_TRANSFORMATION_RECORD_SYNONYMOUS_CONSTANTS |