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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_TRANSFORMATION_FUNCTION_CALL_H_
#define SOURCE_FUZZ_TRANSFORMATION_FUNCTION_CALL_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 TransformationFunctionCall : public Transformation {
public:
explicit TransformationFunctionCall(
protobufs::TransformationFunctionCall message);
TransformationFunctionCall(
uint32_t fresh_id, uint32_t callee_id,
const std::vector<uint32_t>& argument_id,
const protobufs::InstructionDescriptor& instruction_to_insert_before);
// - |message_.fresh_id| must be fresh
// - |message_.instruction_to_insert_before| must identify an instruction
// before which an OpFunctionCall can be legitimately inserted
// - |message_.function_id| must be the id of a function, and calling the
// function before the identified instruction must not introduce recursion
// - |message_.arg_id| must provide suitable arguments for the function call
// (they must have the right types and be available according to dominance
// rules)
// - If the insertion point is not in a dead block then |message_function_id|
// must refer to a livesafe function, and every pointer argument in
// |message_.arg_id| must refer to an arbitrary-valued variable
bool IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const override;
// Adds an instruction of the form:
// |fresh_id| = OpFunctionCall %type |callee_id| |arg_id...|
// before |instruction_to_insert_before|, where %type is the return type of
// |callee_id|.
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::TransformationFunctionCall message_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_TRANSFORMATION_FUNCTION_CALL_H_