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Memory Stall 对转发的影响 #5

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Wonicon opened this issue Dec 26, 2015 · 0 comments

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Wonicon commented Dec 26, 2015

比如WB段写回寄存器的数据可以转发给EX段，但是此时发生了Memory Stall，WB的写回操作虽然有充分的时间执行完成，但是由于WB段在接下来的周期里被MEM段的气泡填充，导致转发单元认为不需要转发，使用原来的值，但是这个原来的值存在IDEX寄存器里，而不是GPR里那个已经被写回的正确的值。

Wonicon added a commit that referenced this issue


          Stall MEMWB

f195825

See Issue #5

Wonicon closed this as completed

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