83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
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// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <boost/intrusive/list.hpp>
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#include "common/common_types.h"
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#include "shader_recompiler/frontend/ir/opcode.h"
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#include "shader_recompiler/frontend/ir/type.h"
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#include "shader_recompiler/frontend/ir/value.h"
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namespace Shader::IR {
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constexpr size_t MAX_ARG_COUNT = 4;
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class Inst : public boost::intrusive::list_base_hook<> {
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public:
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explicit Inst(Opcode op_) noexcept : op(op_) {}
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/// Get the number of uses this instruction has.
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[[nodiscard]] int UseCount() const noexcept {
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return use_count;
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}
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/// Determines whether this instruction has uses or not.
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[[nodiscard]] bool HasUses() const noexcept {
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return use_count > 0;
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}
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/// Get the opcode this microinstruction represents.
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[[nodiscard]] IR::Opcode Opcode() const noexcept {
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return op;
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}
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/// Determines whether or not this instruction may have side effects.
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[[nodiscard]] bool MayHaveSideEffects() const noexcept;
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/// Determines whether or not this instruction is a pseudo-instruction.
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/// Pseudo-instructions depend on their parent instructions for their semantics.
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[[nodiscard]] bool IsPseudoInstruction() const noexcept;
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/// Determines if there is a pseudo-operation associated with this instruction.
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[[nodiscard]] bool HasAssociatedPseudoOperation() const noexcept;
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/// Gets a pseudo-operation associated with this instruction
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[[nodiscard]] Inst* GetAssociatedPseudoOperation(IR::Opcode opcode);
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/// Get the number of arguments this instruction has.
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[[nodiscard]] size_t NumArgs() const;
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/// Get the type this instruction returns.
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[[nodiscard]] IR::Type Type() const;
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/// Get the value of a given argument index.
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[[nodiscard]] Value Arg(size_t index) const;
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/// Set the value of a given argument index.
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void SetArg(size_t index, Value value);
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void Invalidate();
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void ClearArgs();
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void ReplaceUsesWith(Value replacement);
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private:
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void Use(const Value& value);
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void UndoUse(const Value& value);
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IR::Opcode op{};
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int use_count{};
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std::array<Value, MAX_ARG_COUNT> args{};
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Inst* zero_inst{};
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Inst* sign_inst{};
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Inst* carry_inst{};
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Inst* overflow_inst{};
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Inst* zsco_inst{};
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u64 flags{};
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};
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} // namespace Shader::IR
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