| // 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. |
| |
| #include "source/fuzz/fuzzer_pass_add_no_contraction_decorations.h" |
| |
| #include "source/fuzz/transformation_add_no_contraction_decoration.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| FuzzerPassAddNoContractionDecorations::FuzzerPassAddNoContractionDecorations( |
| opt::IRContext* ir_context, TransformationContext* transformation_context, |
| FuzzerContext* fuzzer_context, |
| protobufs::TransformationSequence* transformations, |
| bool ignore_inapplicable_transformations) |
| : FuzzerPass(ir_context, transformation_context, fuzzer_context, |
| transformations, ignore_inapplicable_transformations) {} |
| |
| void FuzzerPassAddNoContractionDecorations::Apply() { |
| // Consider every instruction in every block in every function. |
| for (auto& function : *GetIRContext()->module()) { |
| for (auto& block : function) { |
| for (auto& inst : block) { |
| // Restrict attention to arithmetic instructions (as defined in the |
| // SPIR-V specification). |
| if (TransformationAddNoContractionDecoration::IsArithmetic( |
| inst.opcode())) { |
| // Randomly choose whether to apply the NoContraction decoration to |
| // this arithmetic instruction. |
| if (GetFuzzerContext()->ChoosePercentage( |
| GetFuzzerContext() |
| ->GetChanceOfAddingNoContractionDecoration())) { |
| TransformationAddNoContractionDecoration transformation( |
| inst.result_id()); |
| ApplyTransformation(transformation); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| } // namespace fuzz |
| } // namespace spvtools |
