1 // Copyright (c) 2019 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_FUZZ_TRANSFORMATION_COMPOSITE_EXTRACT_H_ 16 #define SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_EXTRACT_H_ 17 18 #include "source/fuzz/protobufs/spirvfuzz_protobufs.h" 19 #include "source/fuzz/transformation.h" 20 #include "source/fuzz/transformation_context.h" 21 #include "source/opt/ir_context.h" 22 23 namespace spvtools { 24 namespace fuzz { 25 26 class TransformationCompositeExtract : public Transformation { 27 public: 28 explicit TransformationCompositeExtract( 29 const protobufs::TransformationCompositeExtract& message); 30 31 TransformationCompositeExtract( 32 const protobufs::InstructionDescriptor& instruction_to_insert_before, 33 uint32_t fresh_id, uint32_t composite_id, 34 const std::vector<uint32_t>& index); 35 36 // - |message_.fresh_id| must be available 37 // - |message_.instruction_to_insert_before| must identify an instruction 38 // before which it is valid to place an OpCompositeExtract 39 // - |message_.composite_id| must be the id of an instruction that defines 40 // a composite object, and this id must be available at the instruction 41 // identified by |message_.instruction_to_insert_before| 42 // - |message_.index| must be a suitable set of indices for 43 // |message_.composite_id|, i.e. it must be possible to follow this chain 44 // of indices to reach a sub-object of |message_.composite_id| 45 bool IsApplicable( 46 opt::IRContext* ir_context, 47 const TransformationContext& transformation_context) const override; 48 49 // Adds an OpCompositeConstruct instruction before the instruction identified 50 // by |message_.instruction_to_insert_before|, that extracts from 51 // |message_.composite_id| via indices |message_.index| into 52 // |message_.fresh_id|. 53 // 54 // Adds a synonym fact associating |message_.fresh_id| with the relevant 55 // element of |message_.composite_id|, as long as these ids support synonym 56 // creation. 57 void Apply(opt::IRContext* ir_context, 58 TransformationContext* transformation_context) const override; 59 60 std::unordered_set<uint32_t> GetFreshIds() const override; 61 62 protobufs::Transformation ToMessage() const override; 63 64 private: 65 // Helper method for adding data synonym facts when applying the 66 // transformation to |ir_context| and |transformation_context|. 67 void AddDataSynonymFacts(opt::IRContext* ir_context, 68 TransformationContext* transformation_context) const; 69 70 protobufs::TransformationCompositeExtract message_; 71 }; 72 73 } // namespace fuzz 74 } // namespace spvtools 75 76 #endif // SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_EXTRACT_H_ 77