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// 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
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