If these conditions are not all met, or if the second instruction needs to wait for dependencies before issuing, then they are issued in separate cycles.
如果这些条件不都满足,或者第二条指令在执行之前需要等待依赖项,那么它们可以在单独的周期中执行。
2
The POWER6 chip has two hardware instruction threads that are both capable of issuing multiple instructions per cycle, which causes a boost in performance.
POWER 6处理器有两个能够在每个处理器周期发出多条指令的硬件指令线程,从而改善了性能。
3
The POWER5 chip has two hardware instruction threads that are both capable of issuing multiple instructions per cycle, which causes a boost in performance.