寄存器结构及其分配是软件流水算法的关键之一。

The structure and allocation of the register file is a key factor affecting the performance of software pipelining.

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例如，在第6章中对栈和寄存器结构的解释要联系到第4章中对变量作用域的解释。

For example, the explanation of stacks and register frames in Chapter 6 connected with Chapter 4's explanation of variable scope.

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由于索引寄存器是用于访问结构，对一个编译器它们就像金子-更多的它们是一件好事，并且值得几乎任何代价来获得多个它们。

Since index registers are used for structure access, to a compiler they're like gold - more of them is a good thing, and it's worth almost any amount of effort to gain more of them.

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