代码选择在编译器的代码产生阶段是一个十分重要的任务，它的目标就是在与机器无关的中间表示代码和与处理器相关的机器指令之间寻找一种高效的映射方法。
Code selection is an important task in code generation, where the goal is to find an efficient mapping of machine-independent intermediate code to processor-specific machine instructions.
没有中间阶段的规定，也不是一个必要的，没有选择和指定相应的法律。
There is no intermediate phase of regulation, nor is one necessary, and there is no selection and designation of the applicable law.
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