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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <bitset>
#include "common/common_types.h"
namespace Shader::IR {
class Inst;
class Value;
} // namespace Shader::IR
namespace Shader::Backend::GLSL {
struct Id {
u32 base_element : 2;
u32 num_elements_minus_one : 2;
u32 index : 26;
u32 is_spill : 1;
u32 is_condition_code : 1;
};
class RegAlloc {
public:
std::string Define(IR::Inst& inst, u32 num_elements = 1, u32 alignment = 1);
std::string Consume(const IR::Value& value);
private:
static constexpr size_t NUM_REGS = 4096;
static constexpr size_t NUM_ELEMENTS = 4;
std::string Consume(IR::Inst& inst);
Id Alloc(u32 num_elements, u32 alignment);
void Free(Id id);
size_t num_used_registers{};
std::bitset<NUM_REGS> register_use{};
};
} // namespace Shader::Backend::GLSL
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