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// Copyright (c) 2019 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_INSTRUCTION_DESCRIPTOR_H_
#define SOURCE_FUZZ_INSTRUCTION_DESCRIPTOR_H_
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/opt/basic_block.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace fuzz {
// Looks for an instruction in |context| corresponding to |descriptor|.
// Returns |nullptr| if no such instruction can be found.
opt::Instruction* FindInstruction(
const protobufs::InstructionDescriptor& instruction_descriptor,
opt::IRContext* context);
// Creates an InstructionDescriptor protobuf message from the given
// components. See the protobuf definition for details of what these
// components mean.
protobufs::InstructionDescriptor MakeInstructionDescriptor(
uint32_t base_instruction_result_id, spv::Op target_instruction_opcode,
uint32_t num_opcodes_to_ignore);
// Returns an instruction descriptor that describing the instruction at
// |inst_it|, which must be inside |block|. The descriptor will be with
// respect to the first instruction at or before |inst_it| that has a result
// id.
protobufs::InstructionDescriptor MakeInstructionDescriptor(
const opt::BasicBlock& block,
const opt::BasicBlock::const_iterator& inst_it);
// Returns an InstructionDescriptor that describes the given instruction |inst|.
protobufs::InstructionDescriptor MakeInstructionDescriptor(
opt::IRContext* context, opt::Instruction* inst);
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_INSTRUCTION_DESCRIPTOR_H_
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