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I think so, as in "make sure all other stuff has run before calling the NOP finished". Otherwise, it would just skip past it and it would have no effect if placed in a loop, so it would be eating memory for no use at all.


> I think so, as in "make sure all other stuff has run before calling the NOP finished".

Is this related to speculative execution? The high level description sounds like NOP works as sync points.


Eating memory alone may have the desired effect. The memory bandwidth of a cpu is not infinite.




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