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// Copyright (c) 2021 Shiyu Liu
//
// 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_swap_functions.h"
#include "source/fuzz/fuzzer_context.h"
#include "source/fuzz/transformation_swap_two_functions.h"
namespace spvtools {
namespace fuzz {
FuzzerPassSwapFunctions::FuzzerPassSwapFunctions(
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 FuzzerPassSwapFunctions::Apply() {
// Collect all function ids in a module.
std::vector<uint32_t> function_ids;
for (auto& function : *GetIRContext()->module()) {
function_ids.emplace_back(function.result_id());
}
// Iterate through every combination of id i & j where i!=j.
for (size_t i = 0; i < function_ids.size(); ++i) {
for (size_t j = i + 1; j < function_ids.size(); ++j) {
// Perform function swap randomly.
if (!GetFuzzerContext()->ChoosePercentage(
GetFuzzerContext()->GetChanceOfSwappingFunctions())) {
continue;
}
TransformationSwapTwoFunctions transformation(function_ids[i],
function_ids[j]);
}
}
}
} // namespace fuzz
} // namespace spvtools
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