| From: | David Rowley <dgrowleyml(at)gmail(dot)com> |
|---|---|
| To: | "Amonson, Paul D" <paul(dot)d(dot)amonson(at)intel(dot)com> |
| Cc: | Nathan Bossart <nathandbossart(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, "Shankaran, Akash" <akash(dot)shankaran(at)intel(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Popcount optimization using AVX512 |
| Date: | 2024-03-20 04:26:07 |
| Message-ID: | CAApHDvoc0uyLc21RbrPFpUDMx46xugRe0XPccVaHnxrY-86RsA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, 20 Mar 2024 at 11:56, Amonson, Paul D <paul(dot)d(dot)amonson(at)intel(dot)com> wrote:
> Changed in this patch set.
Thanks for rebasing.
I don't think there's any need to mention Intel in each of the
following comments:
+# Check for Intel AVX512 intrinsics to do POPCNT calculations.
+# Newer Intel processors can use AVX-512 POPCNT Capabilities (01/30/2024)
AMD's Zen4 also has AVX512, so it's misleading to indicate it's an
Intel only instruction. Also, writing the date isn't necessary as we
have "git blame"
David
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