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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/104196] [12 Regression] wrong code at -O2 and
 above on x86_64-linux-gnu
Date: Mon, 24 Jan 2022 02:19:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104196

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a new testcase where we have the same IR (including the range) in G=
CC
11.2.0 and the trunk:
int a =3D 6;
int main() {
     for (;;)
    {
        int c =3D 111;
        if (a < 0)
            c =3D 1;
        else
          goto t;
        c =3D -__INT_MAX__ - a;
        int b =3D a;
        int tt, ttt;

        tt =3D a !=3D -2147479551;
        ttt =3D c =3D=3D 1;
        tt =3D tt | ttt;
        if (!tt)
          continue;
        {
            t:
            if (a < 6)
                __builtin_abort ();
            ty:
            return 0;
        }
    }
}

It would be useful to run a bisect on this new one.=