RE: Improve CRC32C performance on SSE4.2

From: "Devulapalli, Raghuveer" <raghuveer(dot)devulapalli(at)intel(dot)com>
To: Andy Fan <zhihuifan1213(at)163(dot)com>
Cc: Nathan Bossart <nathandbossart(at)gmail(dot)com>, John Naylor <johncnaylorls(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: 2025-06-16 23:52:55
Message-ID: PH8PR11MB8286B050E01883F94817704AFB70A@PH8PR11MB8286.namprd11.prod.outlook.com
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> Just be curious, what kind of optimization (like what -O2 does) could mask this
> issue?

>= -O1. Only -O0 shows this problem.

Raghuveer

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