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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/111331] Wrong code at -O1 on x86_64-linux-gnu
 since
Date: Thu, 07 Sep 2023 20:50:29 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: needs-bisection, wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 11.5
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111331

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c                           |tree-optimization
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-09-07
   Target Milestone|---                         |11.5
      Known to work|                            |5.1.0
           Keywords|                            |needs-bisection, wrong-code
      Known to fail|                            |6.1.0
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, note that patch just exposed a latent bug. Here is a testcase wh=
ich
shows the failure even in GCC 6 but works in GCC 5:
```

int a;
int b;
int c(int d, int e, int f) {
  if (d < e)
    return e;
  return (d > f) ? f : d;
}
int main() {
  int g =3D -1;
  a =3D c(b + 30, 29, g + 29);
  volatile int t =3D a;
  if (a !=3D 28)
    __builtin_trap();
}
```=