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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.
#ifndef SOURCE_FUZZ_FUZZER_PASS_ADD_LOOP_PREHEADERS_H
#define SOURCE_FUZZ_FUZZER_PASS_ADD_LOOP_PREHEADERS_H
#include "source/fuzz/fuzzer_pass.h"
namespace spvtools {
namespace fuzz {
// A fuzzer pass that randomly adds simple loop preheaders to loops that do not
// have one. A simple loop preheader is a block that:
// - is the only out-of-loop predecessor of the header
// - branches unconditionally to the header
// - is not a loop header itself
class FuzzerPassAddLoopPreheaders : public FuzzerPass {
public:
FuzzerPassAddLoopPreheaders(
opt::IRContext* ir_context, TransformationContext* transformation_context,
FuzzerContext* fuzzer_context,
protobufs::TransformationSequence* transformations);
~FuzzerPassAddLoopPreheaders();
void Apply() override;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_FUZZER_PASS_ADD_LOOP_PREHEADERS_H