mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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115 lines
3.8 KiB
C++
115 lines
3.8 KiB
C++
// Copyright (c) 2015-2016 The Khronos Group Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef LIBSPIRV_VAL_INSTRUCTION_H_
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#define LIBSPIRV_VAL_INSTRUCTION_H_
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#include <cstdint>
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#include <functional>
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#include <utility>
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#include <vector>
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#include "spirv-tools/libspirv.h"
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#include "table.h"
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namespace libspirv {
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class BasicBlock;
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class Function;
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/// Wraps the spv_parsed_instruction struct along with use and definition of the
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/// instruction's result id
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class Instruction {
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public:
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explicit Instruction(const spv_parsed_instruction_t* inst,
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Function* defining_function = nullptr,
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BasicBlock* defining_block = nullptr);
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/// Registers the use of the Instruction in instruction \p inst at \p index
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void RegisterUse(const Instruction* inst, uint32_t index);
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uint32_t id() const { return inst_.result_id; }
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uint32_t type_id() const { return inst_.type_id; }
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SpvOp opcode() const { return static_cast<SpvOp>(inst_.opcode); }
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/// Returns the Function where the instruction was defined. nullptr if it was
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/// defined outside of a Function
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const Function* function() const { return function_; }
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/// Returns the BasicBlock where the instruction was defined. nullptr if it
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/// was defined outside of a BasicBlock
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const BasicBlock* block() const { return block_; }
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/// Returns a vector of pairs of all references to this instruction's result
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/// id. The first element is the instruction in which this result id was
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/// referenced and the second is the index of the word in that instruction
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/// where this result id appeared
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const std::vector<std::pair<const Instruction*, uint32_t>>& uses() const {
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return uses_;
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}
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/// The word used to define the Instruction
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uint32_t word(size_t index) const { return words_[index]; }
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/// The words used to define the Instruction
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const std::vector<uint32_t>& words() const { return words_; }
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/// The operands of the Instruction
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const std::vector<spv_parsed_operand_t>& operands() const {
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return operands_;
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}
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private:
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const std::vector<uint32_t> words_;
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const std::vector<spv_parsed_operand_t> operands_;
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spv_parsed_instruction_t inst_;
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/// The function in which this instruction was declared
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Function* function_;
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/// The basic block in which this instruction was declared
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BasicBlock* block_;
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/// This is a vector of pairs of all references to this instruction's result
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/// id. The first element is the instruction in which this result id was
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/// referenced and the second is the index of the word in the referencing
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/// instruction where this instruction appeared
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std::vector<std::pair<const Instruction*, uint32_t>> uses_;
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};
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#define OPERATOR(OP) \
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bool operator OP(const Instruction& lhs, const Instruction& rhs); \
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bool operator OP(const Instruction& lhs, uint32_t rhs)
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OPERATOR(<);
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OPERATOR(==);
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#undef OPERATOR
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} // namespace libspirv
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// custom specialization of std::hash for Instruction
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namespace std {
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template <>
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struct hash<libspirv::Instruction> {
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typedef libspirv::Instruction argument_type;
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typedef std::size_t result_type;
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result_type operator()(const argument_type& inst) const {
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return hash<uint32_t>()(inst.id());
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}
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};
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} /// namespace std
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#endif // LIBSPIRV_VAL_INSTRUCTION_H_
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