Yeah, I haven't checked within the last few years on more recent Intel/AMD proce... | Hacker News

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		pixelesque on Feb 6, 2024 \| parent \| context \| favorite \| on: Avoiding register spills in vectorized code with m... Yeah, I haven't checked within the last few years on more recent Intel/AMD processors, but it used to be that on Intel CPUs, only port 5 could be used for shuffles, so it was possible to bottleneck them on code with fairly heavy usage of shuffles.

ack_complete on Feb 6, 2024 [–]

It's better now that Ice Lake+ can do some shuffles and unpack operations on two ports, but bottlenecking on the shuffle ports can still be a problem.

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