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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/115011] [14/15 Regression] Missed
 optimization: (bool) (f ? 1: t) ==> 1 when bool t = (0 >= f) + x;
Date: Thu, 09 May 2024 14:28:55 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 15.0
X-Bugzilla-Keywords: missed-optimization
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X-Bugzilla-Who: pinskia at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115011

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2024-05-09 00:00:00         |
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |pinskia at gcc dot =
gnu.org

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. this was "exposed/caused" by my r14-3486-gd9a0d692ffc695 .

We miss this in previous releases too (LLVM is only able to optimize it for
LLVM 18+):
```
bool x;
bool fn3(unsigned long long int f) {
    bool t =3D (0 >=3D f) + x;
    bool t1 =3D t | (f !=3D 0);
    return t1;
}
```

I will look into this in a few weeks since I suspect it is a minor regressi=
on.=