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0 pointsprotomolecule2y ago0 comments

>I think x86 has like pshufb for LUTs

There is also VPERMI2B [0] which operates on a 128 byte LUT.

0 comments

Oh I forgot about that!! But ye LUTs are very interesting and fascinating :) One of the hidden gems of CPU optimizations :)

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0 pointsprotomolecule2y ago0 comments

>I think x86 has like pshufb for LUTs

There is also VPERMI2B [0] which operates on a 128 byte LUT.

Oh I forgot about that!! But ye LUTs are very interesting and fascinating :) One of the hidden gems of CPU optimizations :)

j / k navigate · click thread line to collapse