SPIRV-Tools/source/fuzz/fuzzer_pass_swap_conditional_branch_operands.cpp
2020-06-19 16:38:52 +01:00

60 lines
2.1 KiB
C++

// Copyright (c) 2020 Vasyl Teliman
//
// 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_conditional_branch_operands.h"
#include "source/fuzz/fuzzer_context.h"
#include "source/fuzz/fuzzer_util.h"
#include "source/fuzz/instruction_descriptor.h"
#include "source/fuzz/transformation_swap_conditional_branch_operands.h"
namespace spvtools {
namespace fuzz {
FuzzerPassSwapBranchConditionalOperands::
FuzzerPassSwapBranchConditionalOperands(
opt::IRContext* ir_context,
TransformationContext* transformation_context,
FuzzerContext* fuzzer_context,
protobufs::TransformationSequence* transformations)
: FuzzerPass(ir_context, transformation_context, fuzzer_context,
transformations) {}
FuzzerPassSwapBranchConditionalOperands::
~FuzzerPassSwapBranchConditionalOperands() = default;
void FuzzerPassSwapBranchConditionalOperands::Apply() {
ForEachInstructionWithInstructionDescriptor(
[this](opt::Function* /*unused*/, opt::BasicBlock* /*unused*/,
opt::BasicBlock::iterator inst_it,
const protobufs::InstructionDescriptor& instruction_descriptor) {
const auto& inst = *inst_it;
if (inst.opcode() != SpvOpBranchConditional) {
return;
}
if (!GetFuzzerContext()->ChoosePercentage(
GetFuzzerContext()
->GetChanceOfSwappingConditionalBranchOperands())) {
return;
}
ApplyTransformation(TransformationSwapConditionalBranchOperands(
instruction_descriptor, GetFuzzerContext()->GetFreshId()));
});
}
} // namespace fuzz
} // namespace spvtools