| From: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | John Naylor <johncnaylorls(at)gmail(dot)com>, Andy Fan <zhihuifan1213(at)163(dot)com>, "Devulapalli, Raghuveer" <raghuveer(dot)devulapalli(at)intel(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 15:43:12 |
| Message-ID: | aFl2EOpXOL06ja10@nathan |
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| Lists: | pgsql-hackers |
On Mon, Jun 23, 2025 at 11:29:32AM -0400, Tom Lane wrote:
> The code still uses _mm512_castsi512_si128, so I think removing it
> from the configure snippet might not be bright.
Ah, right. I'm not firing on all cylinders this morning, apparently.
> I adapted what's
> there now to get the attached, which builds successfully on my old
> compiler. I still need to check it on a newer compiler.
LGTM
--
nathan
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