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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/transformation_swap_two_functions.h"
#include "source/opt/function.h"
#include "source/opt/module.h"
#include "source/fuzz/fuzzer_util.h"
namespace spvtools {
namespace fuzz {
TransformationSwapTwoFunctions::TransformationSwapTwoFunctions(
protobufs::TransformationSwapTwoFunctions message)
: message_(std::move(message)) {}
TransformationSwapTwoFunctions::TransformationSwapTwoFunctions(uint32_t id1,
uint32_t id2) {
assert(id1 != id2 && "The two function ids cannot be the same.");
message_.set_function_id1(id1);
message_.set_function_id2(id2);
}
bool TransformationSwapTwoFunctions::IsApplicable(
opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
auto func1_ptr = ir_context->GetFunction(message_.function_id1());
auto func2_ptr = ir_context->GetFunction(message_.function_id2());
return func1_ptr != nullptr && func2_ptr != nullptr;
}
void TransformationSwapTwoFunctions::Apply(
opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
opt::Module::iterator func1_it =
fuzzerutil::GetFunctionIterator(ir_context, message_.function_id1());
opt::Module::iterator func2_it =
fuzzerutil::GetFunctionIterator(ir_context, message_.function_id2());
assert(func1_it != ir_context->module()->end() &&
"Could not find function 1.");
assert(func2_it != ir_context->module()->end() &&
"Could not find function 2.");
// Two function pointers are all set, swap the two functions within the
// module.
std::iter_swap(func1_it.Get(), func2_it.Get());
}
protobufs::Transformation TransformationSwapTwoFunctions::ToMessage() const {
protobufs::Transformation result;
*result.mutable_swap_two_functions() = message_;
return result;
}
std::unordered_set<uint32_t> TransformationSwapTwoFunctions::GetFreshIds()
const {
return std::unordered_set<uint32_t>();
}
} // namespace fuzz
} // namespace spvtools
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