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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/28782] x86-64 ISA level for glibc itself is always
 x86-64-baseline
Date: Fri, 14 Jan 2022 19:19:53 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28782

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at sourceware dot org   |fweimer at redhat d=
ot com
             Status|NEW                         |RESOLVED
   Target Milestone|---                         |2.35
         Resolution|---                         |FIXED

--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
First parted fixed by:

commit 5732a881aad24fac876f5505a212395048a7a483
Author: Florian Weimer <fweimer@redhat.com>
Date:   Fri Jan 14 16:09:20 2022 +0100

    x86: HAVE_X86_LAHF_SAHF, HAVE_X86_MOVBE and -march=3Dx86-64-vN (bug 287=
82)

    HAVE_X86_LAHF_SAHF is implied by x86-64-v2, and HAVE_X86_MOVBE by
    x86-64-v3.

    The individual flag does not appear in -fverbose-asm flag output
    even if the ISA level implies it.

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

Second part fixed by:

commit 990c953bce06d77360d2e933faa9a008e2c55405
Author: Florian Weimer <fweimer@redhat.com>
Date:   Fri Jan 14 20:16:05 2022 +0100

    x86: Add x86-64-vN check to early startup

    This ISA level covers the glibc build itself.  <dl-hwcap-check.h>
    cannot be used because this check (by design) happens before
    DL_PLATFORM_INIT and the x86 CPU flags initialization.

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

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