Re:Intel i7 loop performance anomaly
by stingraycharles on Tuesday December 03, 2013 @03:10PM
(#6842830)
That's is already being discussed in the comments, and the author claims NOOP-aligning the code has no effect.
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You wouldn't NOOP-align the loop header, but instead replace the CALL instruction in the middle of the loop with an equivalent sequence of NOOPs. This would increase the distance between the loop header and the backward jump.