ladybird/Userland/Libraries/LibJS/Bytecode/Operand.h
Aliaksandr Kalenik d79438a2a6 LibJS: Join locals, constants and registers into single vector
Merging registers, constants and locals into single vector means:
- Better data locality
- No need to check type in Interpreter::get() and Interpreter::set()
  which are very hot functions

Performance improvement is visible in almost all Octane and Kraken
tests.
2024-05-13 19:54:11 +02:00

48 lines
1 KiB
C++

/*
* Copyright (c) 2024, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
#include <LibJS/Forward.h>
namespace JS::Bytecode {
class Operand {
public:
enum class Type {
Register,
Local,
Constant,
};
[[nodiscard]] bool operator==(Operand const&) const = default;
explicit Operand(Type type, u32 index)
: m_type(type)
, m_index(index)
{
}
explicit Operand(Register);
[[nodiscard]] bool is_register() const { return m_type == Type::Register; }
[[nodiscard]] bool is_local() const { return m_type == Type::Local; }
[[nodiscard]] bool is_constant() const { return m_type == Type::Constant; }
[[nodiscard]] Type type() const { return m_type; }
[[nodiscard]] u32 index() const { return m_index; }
[[nodiscard]] Register as_register() const;
void offset_index_by(u32 offset) { m_index += offset; }
private:
Type m_type {};
u32 m_index { 0 };
};
}