| // 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. |
| |
| #include "source/fuzz/fuzzer_pass_add_relaxed_decorations.h" |
| |
| #include "source/fuzz/transformation_add_relaxed_decoration.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| FuzzerPassAddRelaxedDecorations::FuzzerPassAddRelaxedDecorations( |
| opt::IRContext* ir_context, TransformationContext* transformation_context, |
| FuzzerContext* fuzzer_context, |
| protobufs::TransformationSequence* transformations) |
| : FuzzerPass(ir_context, transformation_context, fuzzer_context, |
| transformations) {} |
| |
| void FuzzerPassAddRelaxedDecorations::Apply() { |
| // Consider every instruction in every block in every function. |
| for (auto& function : *GetIRContext()->module()) { |
| for (auto& block : function) { |
| for (auto& inst : block) { |
| // Randomly choose whether to apply the RelaxedPrecision decoration |
| // to this instruction. |
| if (GetFuzzerContext()->ChoosePercentage( |
| GetFuzzerContext()->GetChanceOfAddingRelaxedDecoration())) { |
| TransformationAddRelaxedDecoration transformation(inst.result_id()); |
| // Restrict attention to numeric instructions (returning 32-bit |
| // floats or ints according to SPIR-V documentation) in dead blocks. |
| if (transformation.IsApplicable(GetIRContext(), |
| *GetTransformationContext())) { |
| transformation.Apply(GetIRContext(), GetTransformationContext()); |
| *GetTransformations()->add_transformation() = |
| transformation.ToMessage(); |
| } |
| } |
| } |
| } |
| } |
| } |
| } // namespace fuzz |
| } // namespace spvtools |
