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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/31335] New: Compile glibc with -march=x86-64-v3 should
 disable FMA4 multi-arch version
Date: Sun, 04 Feb 2024 02:41:15 +0000
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X-Bugzilla-Product: glibc
X-Bugzilla-Component: math
X-Bugzilla-Version: 2.39
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D31335

            Bug ID: 31335
           Summary: Compile glibc with -march=3Dx86-64-v3 should disable
                    FMA4 multi-arch version
           Product: glibc
           Version: 2.39
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---
            Target: x86-64

When building glibc with -march=3Dx86-64-v3 or high, the resulting
glibc won't run on FMA4 processors.  FMA4 multi-arch version should
be disabled in this case.

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