Re: Improve CRC32C performance on SSE4.2

From: Soumyadeep Chakraborty <soumyadeep2007(at)gmail(dot)com>
To: Andy Fan <zhihuifan1213(at)163(dot)com>
Cc: John Naylor <johncnaylorls(at)gmail(dot)com>, "Devulapalli, Raghuveer" <raghuveer(dot)devulapalli(at)intel(dot)com>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, Jesper Pedersen <jesperpedersen(dot)db(at)gmail(dot)com>, Tomas Vondra <tomas(at)vondra(dot)me>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, "Shankaran, Akash" <akash(dot)shankaran(at)intel(dot)com>
Subject: Re: Improve CRC32C performance on SSE4.2
Date: 2025-06-20 23:09:21
Message-ID: CAE-ML+_h_chjgU7b3ymct6DgyUWNczVGd3Q2yGH5YVmUgGW1sg@mail.gmail.com
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Verified that the patch works w/ clang-19 -O0 and that avx-512 was selected
for
the CRC at runtime. Thanks for fixing this.

Regards,
Deep (VMware)

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