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JessonYue avatar JessonYue commented on May 30, 2024

我们的处理器通过流水线来获得高性能，流水线的要求就是事先明确要执行的指令顺序。在流水线中，把一条指令分为多个阶段，每个阶段只执行所需操作的一小部分，比如取指令、确定指令类型、读数据、运算、写数据以及更新程序计数器。流水线通过重叠连续指令的步骤来获得高性能，比如在取一条指令的同时，执行它前面指令的算术运算。所以如果事先不知道指令执行顺序，那么事先所做的预备工作就白干了。 为了提高性能，往往可以改写**使用条件数据传送**的代码形式提高指令执行效率。

from computer-basics.

JessonYue avatar JessonYue commented on May 30, 2024

https://compas.cs.stonybrook.edu/~nhonarmand/courses/sp16/cse502/slides/06-pipelining.pdf 参考下

from computer-basics.

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