[Bug tree-optimization/111792] [14 Regression] wrong code at -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111792

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|wrong code at -O3 on        |[14 Regression] wrong code
                   |x86_64-linux-gnu            |at -O3 on x86_64-linux-gnu
   Target Milestone|---                         |14.0
                 CC|                            |rguenth at gcc dot gnu.org
           Keywords|                            |needs-bisection, wrong-code
             Status|UNCONFIRMED                 |NEW
            Version|unknown                     |14.0
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-10-13

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  -fno-tree-loop-vectorize fixes it.  We vectorize

  for (; l; l--) {
    long a[1];
    for (r = 0; r < 1; r++) {
      h = a[0];
      if (g)
        goto L;
    }
  }