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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.
#include "source/fuzz/id_use_descriptor.h"
#include "source/fuzz/instruction_descriptor.h"
namespace spvtools {
namespace fuzz {
opt::Instruction* FindInstructionContainingUse(
const protobufs::IdUseDescriptor& id_use_descriptor,
opt::IRContext* context) {
auto result =
FindInstruction(id_use_descriptor.enclosing_instruction(), context);
if (!result) {
return nullptr;
}
if (id_use_descriptor.in_operand_index() >= result->NumInOperands()) {
return nullptr;
}
if (result->GetSingleWordInOperand(id_use_descriptor.in_operand_index()) !=
id_use_descriptor.id_of_interest()) {
return nullptr;
}
return result;
}
protobufs::IdUseDescriptor MakeIdUseDescriptor(
uint32_t id_of_interest,
const protobufs::InstructionDescriptor& enclosing_instruction,
uint32_t in_operand_index) {
protobufs::IdUseDescriptor result;
result.set_id_of_interest(id_of_interest);
*result.mutable_enclosing_instruction() = enclosing_instruction;
result.set_in_operand_index(in_operand_index);
return result;
}
protobufs::IdUseDescriptor MakeIdUseDescriptorFromUse(
opt::IRContext* context, opt::Instruction* inst,
uint32_t in_operand_index) {
const auto& in_operand = inst->GetInOperand(in_operand_index);
assert(spvIsInIdType(in_operand.type));
return MakeIdUseDescriptor(in_operand.words[0],
MakeInstructionDescriptor(context, inst),
in_operand_index);
}
} // namespace fuzz
} // namespace spvtools
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