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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/105832] [13/14 Regression] Dead Code
 Elimination Regression at -O3 (trunk vs. 12.1.0)
Date: Mon, 07 Aug 2023 08:40:12 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: missed-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105832

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

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

--- Comment #14 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #10)
> I think the simple way of fixing this is optimizing:
> ```
> bool f(int g)
> {
> return (1 >> g) !=3D 0;
> }
> ```
> into
> ```
> bool f0(int g)
> {
> return g =3D=3D 0;
> }
> ```

I am going to do the above.=