例如，编译器为了优化一个循环索引变量，可能会选择把它存储到一个寄存器中，或者缓存会延迟到一个更适合的时间，才把一个新的变量值存入主存。

For example, a compiler may choose to optimize a loop index variable by storing it in a register, or the cache may delay flushing a new value of a variable to main memory until a more opportune time.

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循环展开是一个可能导致JIT分配寄存器出现问题的转换的例子。

Loop unrolling is an example of a transformation that might cause the JIT to have problems register-allocating.

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然后再将寄存器127用作循环计数器，将寄存器126用作基指针，并在每个值上执行convert _ to_upper，直到到达缓冲区的底部为止。

You then use register 127 as your loop counter and register 126 as your base pointer, and perform convert_to_upper on each value until you get to the end of the buffer.

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