From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Munro <thomas.munro@gmail.com>
cc: Peter Eisentraut <peter.eisentraut@enterprisedb.com>,
        Andres Freund <andres@anarazel.de>,
        Andrew Dunstan <andrew@dunslane.net>,
        Robert Haas <robertmhaas@gmail.com>,
        pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: Cleaning up historical portability baggage
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Comments: In-reply-to Thomas Munro <thomas.munro@gmail.com>
	message dated "Sat, 13 Aug 2022 09:48:24 +1200"
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Date: Fri, 12 Aug 2022 18:45:27 -0400
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Thomas Munro <thomas.munro@gmail.com> writes:
> I'm curious, though... if we used compiler builtins, would
> -march/-mcpu etc know about this kind of thing, for people who wanted
> to compile on ancient hardware, or, I guess more interestingly, newer
> tricks that we haven't got around to learning about yet?

No idea, but I could run some tests if you have something
specific in mind.

			regards, tom lane