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125 points todsacerdoti | 1 comments | 27 Aug 25 11:38 UTC | HN request time: 0.202s | source

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gwd ◴[27 Aug 25 12:39 UTC] No.45038833[source]▶

Kind of weird that NOP actually slows down the pipeline, as I'd think that would be the easiest thing to optimize out of the pipeline, unless instruction fetch is one of the main limiting factors. Is it architecturally defined that NOP will slow down execution?

replies(5): >>45039006 #>>45039234 #>>45039381 #>>45039410 #>>45039488 #

1. pkhuong ◴[27 Aug 25 13:30 UTC] No.45039410[source]▶

>>45038833 #

Yeah, just decode. But that's nice because the effect is independent of the backend's state.

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