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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_ADD_PARAMETER_H_
#define SOURCE_FUZZ_TRANSFORMATION_ADD_PARAMETER_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 TransformationAddParameter : public Transformation {
public:
explicit TransformationAddParameter(
protobufs::TransformationAddParameter message);
TransformationAddParameter(uint32_t function_id, uint32_t parameter_fresh_id,
uint32_t parameter_type_id,
std::map<uint32_t, uint32_t> call_parameter_ids,
uint32_t function_type_fresh_id);
// - |function_id| must be a valid result id of some non-entry-point function
// in the module.
// - |parameter_type_id| is a type id of the new parameter. The type must be
// supported by this transformation as specified by IsParameterTypeSupported
// function.
// - |call_parameter_id| must map from every id of an OpFunctionCall
// instruction of this function to the id that will be passed as the new
// parameter at that call site. There could be no callers, therefore this
// map can be empty.
// - |parameter_fresh_id| and |function_type_fresh_id| are fresh ids and are
// not equal.
bool IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const override;
// - Creates a new OpFunctionParameter instruction with result id
// |parameter_fresh_id| for the function with |function_id|.
// - Adjusts function's type to include a new parameter.
// - Adds an argument to every caller of the function to account for the added
// parameter. The argument is the value in |call_parameter_id| map.
void Apply(opt::IRContext* ir_context,
TransformationContext* transformation_context) const override;
std::unordered_set<uint32_t> GetFreshIds() const override;
protobufs::Transformation ToMessage() const override;
// Returns true if the type of the parameter is supported by this
// transformation.
static bool IsParameterTypeSupported(opt::IRContext* ir_context,
uint32_t type_id);
private:
protobufs::TransformationAddParameter message_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_TRANSFORMATION_ADD_PARAMETER_H_