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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/31335] Compile glibc with -march=x86-64-v3 should disable FMA4 multi-arch version
Date: Sun, 25 Feb 2024 23:17:08 +0000	[thread overview]
Message-ID: <bug-31335-131-QYQyPSZmCn@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-31335-131@http.sourceware.org/bugzilla/>

https://sourceware.org/bugzilla/show_bug.cgi?id=31335

--- Comment #2 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sunil Pandey <skpgkp2@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9f78a7c1d0963282608da836b840f0d5ae1c478e

commit 9f78a7c1d0963282608da836b840f0d5ae1c478e
Author: Sunil K Pandey <skpgkp2@gmail.com>
Date:   Tue Feb 13 12:23:14 2024 -0800

    x86_64: Exclude SSE, AVX and FMA4 variants in libm multiarch

    When glibc is built with ISA level 3 or higher by default, the resulting
    glibc binaries won't run on SSE or FMA4 processors.  Exclude SSE, AVX and
    FMA4 variants in libm multiarch when ISA level 3 or higher is enabled by
    default.

    When glibc is built with ISA level 2 enabled by default, only keep SSE4.1
    variant.

    Fixes BZ 31335.

    NB: elf/tst-valgrind-smoke test fails with ISA level 4, because valgrind
    doesn't support AVX512 instructions:

    https://bugs.kde.org/show_bug.cgi?id=383010

    Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

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  parent reply	other threads:[~2024-02-25 23:17 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-04  2:41 [Bug math/31335] New: " hjl.tools at gmail dot com
2024-02-05 15:08 ` [Bug math/31335] " fweimer at redhat dot com
2024-02-05 15:15 ` hjl.tools at gmail dot com
2024-02-25 23:17 ` cvs-commit at gcc dot gnu.org [this message]
2024-04-04  6:15 ` fweimer at redhat dot com
2024-04-04 13:12 ` hjl.tools at gmail dot com
2024-04-04 13:36 ` hjl.tools at gmail dot com
2024-04-04 14:36 ` hjl.tools at gmail dot com
2024-04-14 13:37 ` hjl.tools at gmail dot com

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