47 lines
944 B
C++
47 lines
944 B
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 <bitset>
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#include "common/common_types.h"
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namespace Shader::IR {
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class Inst;
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class Value;
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} // namespace Shader::IR
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namespace Shader::Backend::GLSL {
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struct Id {
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u32 base_element : 2;
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u32 num_elements_minus_one : 2;
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u32 index : 26;
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u32 is_spill : 1;
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u32 is_condition_code : 1;
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};
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class RegAlloc {
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public:
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std::string Define(IR::Inst& inst, u32 num_elements = 1, u32 alignment = 1);
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std::string Consume(const IR::Value& value);
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private:
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static constexpr size_t NUM_REGS = 4096;
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static constexpr size_t NUM_ELEMENTS = 4;
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std::string Consume(IR::Inst& inst);
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Id Alloc(u32 num_elements, u32 alignment);
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void Free(Id id);
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size_t num_used_registers{};
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std::bitset<NUM_REGS> register_use{};
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};
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} // namespace Shader::Backend::GLSL
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