This corresponds to the selb assembly language instruction.
它对应于汇编语言的selb 指令。
However, for now, I will simply show how to save two clock cycles by adjusting the order of the selb and STQD instructions. Here is the new order.
不过对于现在来说，我们将简单地展示如何通过调整selb和stqd指令的顺序来节省两个时钟周期。
The key is that the SPU has several conditional instructions, such as selb, shufb, and the bit operations, which allow conditional operations to occur without branching.
问题的关键是SPU有几个条件指令，例如selb、shufb和位操作，它们可以不用分支就能实现条件操作。
Selb operates by going through the selector bit-by-bit.
selb通过逐位遍历选择器进行操作。
Selb operates by going through the selector bit-by-bit.
selb通过逐位遍历选择器进行操作。
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