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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/111764] [11/12/13/14 Regression] Wrong code
 at -O3 on x86_64-linux-gnu
Date: Wed, 11 Oct 2023 13:36:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111764

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot =
gnu.org

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so the vectorizer transforms

 b =3D 2;
 for (;;)
   b =3D b * b;

to

 b =3D 1;
 for (;;)
   b =3D b * b;
 b *=3D 2;

which is obviously wrong(TM).=