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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_SWAP_CONDITIONAL_BRANCH_OPERANDS_H_
#define SOURCE_FUZZ_TRANSFORMATION_SWAP_CONDITIONAL_BRANCH_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 TransformationSwapConditionalBranchOperands : public Transformation {
public:
explicit TransformationSwapConditionalBranchOperands(
protobufs::TransformationSwapConditionalBranchOperands message);
TransformationSwapConditionalBranchOperands(
const protobufs::InstructionDescriptor& instruction_descriptor,
uint32_t fresh_id);
// - |message_.instruction_descriptor| must be a valid descriptor of some
// OpBranchConditional instruction in the module.
// - |message_.fresh_id| must be a fresh id.
bool IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const override;
// Inserts |%fresh_id = OpLogicalNot %bool_type_id %cond_id| before
// |OpBranchConditional %cond_id %branch_a %branch_b [%weight_a %weight_b]|.
// Replaces %cond_id with %fresh_id and swaps %branch_* and %weight_*
// operands.
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::TransformationSwapConditionalBranchOperands message_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_TRANSFORMATION_SWAP_CONDITIONAL_BRANCH_OPERANDS_H_
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