Re: Improve CRC32C performance on SSE4.2

From: John Naylor <johncnaylorls(at)gmail(dot)com>
To: Andy Fan <zhihuifan1213(at)163(dot)com>
Cc: "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: 2025-06-23 11:07:47
Message-ID: CANWCAZY01_SOeMjoz8UZrULysYhbkQMD_0YOGPfyM5vHZTw3SQ@mail.gmail.com
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On Tue, Jun 17, 2025 at 3:55 PM John Naylor <johncnaylorls(at)gmail(dot)com> wrote:
> > > Replacing that with _mm512_zextsi128_si512 fixes the problem.
>
> Here's a patch for testing, which also reverts the previous
> workaround.

Pushed, thanks everyone!

--
John Naylor
Amazon Web Services

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