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// 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,
bool ignore_inapplicable_transformations)
: FuzzerPass(ir_context, transformation_context, fuzzer_context,
transformations, ignore_inapplicable_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
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