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// Copyright (c) 2020 André Perez Maselco
//
// 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/transformation_swap_commutable_operands.h"
#include "source/fuzz/fuzzer_util.h"
#include "source/fuzz/instruction_descriptor.h"
namespace spvtools {
namespace fuzz {
TransformationSwapCommutableOperands::TransformationSwapCommutableOperands(
protobufs::TransformationSwapCommutableOperands message)
: message_(std::move(message)) {}
TransformationSwapCommutableOperands::TransformationSwapCommutableOperands(
const protobufs::InstructionDescriptor& instruction_descriptor) {
*message_.mutable_instruction_descriptor() = instruction_descriptor;
}
bool TransformationSwapCommutableOperands::IsApplicable(
opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
auto instruction =
FindInstruction(message_.instruction_descriptor(), ir_context);
if (instruction == nullptr) return false;
SpvOp opcode = static_cast<SpvOp>(
message_.instruction_descriptor().target_instruction_opcode());
assert(instruction->opcode() == opcode &&
"The located instruction must have the same opcode as in the "
"descriptor.");
return spvOpcodeIsCommutativeBinaryOperator(opcode);
}
void TransformationSwapCommutableOperands::Apply(
opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
auto instruction =
FindInstruction(message_.instruction_descriptor(), ir_context);
// By design, the instructions defined to be commutative have exactly two
// input parameters.
std::swap(instruction->GetInOperand(0), instruction->GetInOperand(1));
}
protobufs::Transformation TransformationSwapCommutableOperands::ToMessage()
const {
protobufs::Transformation result;
*result.mutable_swap_commutable_operands() = message_;
return result;
}
std::unordered_set<uint32_t> TransformationSwapCommutableOperands::GetFreshIds()
const {
return std::unordered_set<uint32_t>();
}
} // namespace fuzz
} // namespace spvtools
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