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// 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.
#ifndef SOURCE_FUZZ_TRANSFORMATION_PERMUTE_PHI_OPERANDS_H_
#define SOURCE_FUZZ_TRANSFORMATION_PERMUTE_PHI_OPERANDS_H_
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/fuzz/transformation.h"
#include "source/fuzz/transformation_context.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace fuzz {
class TransformationPermutePhiOperands : public Transformation {
public:
explicit TransformationPermutePhiOperands(
protobufs::TransformationPermutePhiOperands message);
TransformationPermutePhiOperands(uint32_t result_id,
const std::vector<uint32_t>& permutation);
// - |result_id| must be a valid id of some OpPhi instruction in the module.
// - |permutation| must contain elements in the range [0, n/2 - 1] where |n|
// is a number of operands to the instruction with |result_id|. All elements
// must be unique (i.e. |permutation.size() == n / 2|).
bool IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const override;
// Permutes operands of the OpPhi instruction with |result_id| according to
// the elements in |permutation|.
void Apply(opt::IRContext* ir_context,
TransformationContext* transformation_context) const override;
std::unordered_set<uint32_t> GetFreshIds() const override;
protobufs::Transformation ToMessage() const override;
private:
protobufs::TransformationPermutePhiOperands message_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_TRANSFORMATION_PERMUTE_PHI_OPERANDS_H_
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