SPIRV-Tools/source/opt/instruction.cpp
2016-09-22 18:15:23 -04:00

94 lines
3.3 KiB
C++

// Copyright (c) 2016 Google Inc.
//
// 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 "instruction.h"
#include <initializer_list>
#include "reflect.h"
namespace spvtools {
namespace ir {
Instruction::Instruction(const spv_parsed_instruction_t& inst,
std::vector<Instruction>&& dbg_line)
: opcode_(static_cast<SpvOp>(inst.opcode)),
type_id_(inst.type_id),
result_id_(inst.result_id),
dbg_line_insts_(std::move(dbg_line)) {
assert((!IsDebugLineInst(opcode_) || dbg_line.empty()) &&
"Op(No)Line attaching to Op(No)Line found");
for (uint32_t i = 0; i < inst.num_operands; ++i) {
const auto& current_payload = inst.operands[i];
std::vector<uint32_t> words(
inst.words + current_payload.offset,
inst.words + current_payload.offset + current_payload.num_words);
operands_.emplace_back(current_payload.type, std::move(words));
}
}
Instruction::Instruction(SpvOp op, uint32_t ty_id, uint32_t res_id,
const std::vector<Operand>& in_operands)
: opcode_(op), type_id_(ty_id), result_id_(res_id), operands_() {
if (type_id_ != 0) {
operands_.emplace_back(spv_operand_type_t::SPV_OPERAND_TYPE_TYPE_ID,
std::initializer_list<uint32_t>{type_id_});
}
if (result_id_ != 0) {
operands_.emplace_back(spv_operand_type_t::SPV_OPERAND_TYPE_RESULT_ID,
std::initializer_list<uint32_t>{result_id_});
}
operands_.insert(operands_.end(), in_operands.begin(), in_operands.end());
}
Instruction::Instruction(Instruction&& that)
: opcode_(that.opcode_),
type_id_(that.type_id_),
result_id_(that.result_id_),
operands_(std::move(that.operands_)),
dbg_line_insts_(std::move(that.dbg_line_insts_)) {}
Instruction& Instruction::operator=(Instruction&& that) {
opcode_ = that.opcode_;
type_id_ = that.type_id_;
result_id_ = that.result_id_;
operands_ = std::move(that.operands_);
dbg_line_insts_ = std::move(that.dbg_line_insts_);
return *this;
}
uint32_t Instruction::GetSingleWordOperand(uint32_t index) const {
const auto& words = GetOperand(index).words;
assert(words.size() == 1 && "expected the operand only taking one word");
return words.front();
}
uint32_t Instruction::NumInOperandWords() const {
uint32_t size = 0;
for (uint32_t i = TypeResultIdCount(); i < operands_.size(); ++i)
size += static_cast<uint32_t>(operands_[i].words.size());
return size;
}
void Instruction::ToBinaryWithoutAttachedDebugInsts(
std::vector<uint32_t>* binary) const {
const uint32_t num_words = 1 + NumOperandWords();
binary->push_back((num_words << 16) | static_cast<uint16_t>(opcode_));
for (const auto& operand : operands_)
binary->insert(binary->end(), operand.words.begin(), operand.words.end());
}
} // namespace ir
} // namespace spvtools