53 lines
1.2 KiB
C++
53 lines
1.2 KiB
C++
// 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);
|
|
|
|
/// Returns true if the instruction is expected to be aliased to another
|
|
static bool IsAliased(const IR::Inst& inst);
|
|
|
|
/// Returns the underlying value out of an alias sequence
|
|
static IR::Inst& AliasInst(IR::Inst& inst);
|
|
|
|
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
|