| From: | Michael Paquier <michael(at)paquier(dot)xyz> |
|---|---|
| To: | David Rowley <dgrowleyml(at)gmail(dot)com> |
| Cc: | Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com>, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, Peter Eisentraut <peter(at)eisentraut(dot)org>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: define pg_structiszero(addr, s, r) |
| Date: | 2024-11-06 00:52:21 |
| Message-ID: | Zyq9xTkt0-BLCZci@paquier.xyz |
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| Lists: | pgsql-hackers |
On Wed, Nov 06, 2024 at 01:38:50PM +1300, David Rowley wrote:
> We could just write it that way and leave it up to the compiler to
> decide whether to use SIMD or not. Going by [1], gcc with -O2 uses
> SIMD instructions from 14.1 and clang with -O2 does it from version
> 8.0.0. gcc 14.1 was release in May 2024, so still quite new. It'll be
> quite a bit older once PG18 is out. Using the bitwise-OR method, more
> and more people will benefit as gcc14.1 and beyond becomes more
> mainstream.
>
> Clang 8.0.0 is from March 2019, so quite old already.
Okay, WFM to keep things the way they are in the patch.
--
Michael
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