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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/100934] [9/10/11/12 Regression] wrong code at
 -O3 during unrolling
Date: Sun, 06 Jun 2021 21:07:05 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100934

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-linux-gnu
             Status|UNCONFIRMED                 |NEW
            Summary|wrong code at -O3 on        |[9/10/11/12 Regression]
                   |x86_64-linux-gnu            |wrong code at -O3 during
                   |                            |unrolling
           Keywords|                            |wrong-code
   Last reconfirmed|                            |2021-06-06
      Known to fail|                            |12.0
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The complete unroller is adding a __builtin_unreachable and then that becom=
es
the only thing.=