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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: Heikki Linnakangas <hlinnaka@iki.fi>
Cc: Bastien Roucariès <rouca@debian.org>
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: Detection of hadware feature => please do not use signal
Date: Mon, 25 Nov 2024 17:40:10 -0500
Message-ID: <1492578.1732574410@sss.pgh.pa.us> (raw)
In-Reply-To: <1430419.1732557238@sss.pgh.pa.us>
References: <4496616.iHFcN1HehY@portable-bastien>
	<af84e934-4e9c-4380-95ee-8921dab1254b@iki.fi>
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	<7ec1c65c-1a28-49a7-af43-f77c260a3df6@iki.fi>
	<1292593.1730399134@sss.pgh.pa.us>
	<CA+hUKGLRXq0-s0n2=dy_A5iY-Omg628osyJEJMjPQ=6m566UgA@mail.gmail.com>
	<707008.1732325995@sss.pgh.pa.us>
	<CA+hUKGJPrRow2aiUSK=aep5nyXUaB0gBoDJQKfyCsP=-ivfapg@mail.gmail.com>
	<736756.1732341046@sss.pgh.pa.us>
	<865773.1732399354@sss.pgh.pa.us>
	<CA+hUKGLOh5kr4fvGFnpOq+_QuXErsYRL4kcSpBYqKdQLa3keBw@mail.gmail.com>
	<885805.1732406935@sss.pgh.pa.us>
	<CA+hUKGKucCptPdnuQtMGpAD3zYTFN0DMpO3D8fDhmuS1c-yBUA@mail.gmail.com>
	<1074317.1732479406@sss.pgh.pa.us>
	<CA+hUKG+CghJfzhsqTwxxfZoMTA0uKtG8ka02Ydba+qbxOCV5nA@mail.gmail.com>
	<1216860.1732491268@sss.pgh.pa.us>
	<CA+hUKGLn70U1Ti+NSeYkQBU83fM5Q8-amnC8Cvge6p3xUY9nBQ@mail.gmail.com>
	<1229505.1732498033@sss.pgh.pa.us>
	<1346552.1732549297@sss.pgh.pa.us>
	<1430419.1732557238@sss.pgh.pa.us>

I wrote:
> And done.  In the event I decided to try the +simd option first,
> reasoning that that's correct on the majority of current ARM systems.
> I'm interested to see what the older buildfarm ARM animals pick.

Early returns are that they're all picking the +simd option, and
seem to be just as happy with that as they were without it.
I wonder if we could just drop the "without" probe altogether.
It'd save some configure cycles for other platforms (since they'll
fruitlessly run through all of these tests).

			regards, tom lane





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  Subject: Re: Detection of hadware feature => please do not use signal
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