1 // Copyright (c) 2020 Vasyl Teliman 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_FUZZER_PASS_WRAP_REGIONS_IN_SELECTIONS_H_ 16 #define SOURCE_FUZZ_FUZZER_PASS_WRAP_REGIONS_IN_SELECTIONS_H_ 17 18 #include "source/fuzz/fuzzer_pass.h" 19 20 namespace spvtools { 21 namespace fuzz { 22 23 // Randomly wraps a region of blocks in every function into a selection 24 // construct. 25 class FuzzerPassWrapRegionsInSelections : public FuzzerPass { 26 public: 27 FuzzerPassWrapRegionsInSelections( 28 opt::IRContext* ir_context, TransformationContext* transformation_context, 29 FuzzerContext* fuzzer_context, 30 protobufs::TransformationSequence* transformations); 31 32 void Apply() override; 33 34 private: 35 // Tries to adjust |header_block_candidate| such that 36 // TransformationWrapRegionInSelection has higher chances of being 37 // applied. In particular, tries to split |header_block_candidate| if it's 38 // already a header block of some other construct. 39 opt::BasicBlock* MaybeGetHeaderBlockCandidate( 40 opt::BasicBlock* header_block_candidate); 41 42 // Tries to adjust |merge_block_candidate| such that 43 // TransformationWrapRegionInSelection has higher chances of being 44 // applied. In particular, tries to split |merge_block_candidate| if it's 45 // already a merge block of some other construct. 46 opt::BasicBlock* MaybeGetMergeBlockCandidate( 47 opt::BasicBlock* merge_block_candidate); 48 }; 49 50 } // namespace fuzz 51 } // namespace spvtools 52 53 #endif // SOURCE_FUZZ_FUZZER_PASS_WRAP_REGIONS_IN_SELECTIONS_H_ 54