There are other conventions (passing parameters in registers, for instance) that behave differently, and of course the optimizer can make mincemeat of any clear picture as well.

• 还有其他的约定（使用寄存器为实例传参数）的行为不一样，当然优化器也可以把清晰地状态变得混乱。我们的焦点是提供一个大概看法，而不是为这些约定做什么权威性的定义。