... 条件执行部分 while-do-part 条件指令 conditional instruction 条件置换 conditional substitution ...
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Ø 条件指令(Conditional directives) 指示Compiler在编译的过程中, 按我们设定的条件, 选择性的采用/排除不同区域的
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条件指令组 conditional order unit
条件转移指令 [计] conditional jump instruction ; [计] conditional branch instruction ; conditional jump ; conditional transfer command
无条件转移指令 unconditionaltransferinstruction ; [计] unconditional branch instruction ; branch-unconditional instruction
条件停机指令 [计] conditional stop order
无条件跳越指令 unconditional jump instruction
条件停止指令 conditional stop instruction
转移或跳过条件的指令 branch or skip on condition instruction
条件汇编指令 [计] conditional assembly instruction
这个程序最终要做的是计算两种答案，然后使用一个条件指令来选择所需要的答案。
What the program will end up doing is calculating both answers, and then using a conditional instruction to select the desired answer.
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。
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.
如果一个条件指令是一组指令中的第一条指令，则该条件适用与该组中的所有指令。
If a conditional command is the first command in a group of commands, the condition applies to all the commands in the group.
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