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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/104582] [11 Regression] Unoptimal code for
 __negdi2 (and others) from libgcc2 due to unwanted vectorization
Date: Tue, 22 Feb 2022 07:59:44 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104582

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-*-* i?86-*-*
            Summary|[11/12 Regression]          |[11 Regression] Unoptimal
                   |Unoptimal code for __negdi2 |code for __negdi2 (and
                   |(and others) from libgcc2   |others) from libgcc2 due to
                   |due to unwanted             |unwanted vectorization
                   |vectorization               |
      Known to work|                            |12.0

--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> ---
This is now fixed on trunk for x86.=