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Message-ID: <Pine.BSM.4.64L.2402290007490.1531@herc.mirbsd.org>
Date: Thu, 29 Feb 2024 00:10:05 +0000 (UTC)
From: Thorsten Glaser <tg@...bsd.de>
To: musl@...ts.openwall.com
cc: James Tirta Halim <tirtajames45@...il.com>
Subject: Re: [PATCH] add memcmpeq: memcmp that returns length of first
mismatch
Pedro Falcato dixit:
>Small note: This isn't quite true for remotely modern x86, unaligned
It’s very much true, e.g. it breaks atomicity (ok, not relevant
*here*, but in general).
AIUI, even modern amd64 chips of all vendors are reverting to
optimising rep movsb/lodsb instead again, for stringops.
Of course the status on other architectures should be sufficient to
not use unaligned accesses.
bye,
//mirabilos
--
08:05⎜<XTaran:#grml> mika: Does grml have an tool to read Apple
⎜ System Log (asl) files? :)
08:08⎜<ft:#grml> yeah. /bin/rm. ;) 08:09⎜<mrud:#grml> hexdump -C
08:31⎜<XTaran:#grml> ft, mrud: *g*
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