Re: meson PGXS compatibility

From: John Naylor <john(dot)naylor(at)enterprisedb(dot)com>
To: Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>
Cc: Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org, Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Subject: Re: meson PGXS compatibility
Date: 2022-10-12 06:53:05
Message-ID: CAFBsxsG=AYkniKaabr9aRPUCbuDy6qKVdsAE3R3ajDo-9+y_2w@mail.gmail.com
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On Wed, Oct 12, 2022 at 12:50 PM Peter Eisentraut <
peter(dot)eisentraut(at)enterprisedb(dot)com> wrote:
>
> On 05.10.22 22:07, Andres Freund wrote:
> > 0001: autoconf: Unify CFLAGS_SSE42 and CFLAGS_ARMV8_CRC32C
>
> I wonder, there has been some work lately to use SIMD and such in other
> places. Would that affect what kinds of extra CPU-specific compiler
> flags and combinations we might need?

In short, no. The functionality added during this cycle only uses
instructions available by default on the platform. CRC on Arm depends on
armv8-a+crc, and CRC on x86-64 depends on SSE4.2. We can't assume those
currently.

--
John Naylor
EDB: http://www.enterprisedb.com

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