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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_ID_USE_DESCRIPTOR_H_
#define SOURCE_FUZZ_ID_USE_DESCRIPTOR_H_
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace fuzz {
// Looks for an instruction in |context| that contains a use
// identified by |id_use_descriptor|.
// Returns |nullptr| if no such instruction can be found.
opt::Instruction* FindInstructionContainingUse(
const protobufs::IdUseDescriptor& id_use_descriptor,
opt::IRContext* context);
// Creates an IdUseDescriptor protobuf message from the given components.
// See the protobuf definition for details of what these components mean.
protobufs::IdUseDescriptor MakeIdUseDescriptor(
uint32_t id_of_interest,
const protobufs::InstructionDescriptor& enclosing_instruction,
uint32_t in_operand_index);
// Given an id use, represented by the instruction |inst| that uses the id, and
// the input operand index |in_operand_index| associated with the usage, returns
// an IdUseDescriptor that represents the use.
protobufs::IdUseDescriptor MakeIdUseDescriptorFromUse(
opt::IRContext* context, opt::Instruction* inst, uint32_t in_operand_index);
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_ID_USE_DESCRIPTOR_H_