[Bug tree-optimization/112961] [13/14 Regression] middle-end Missed vectorization: failed to vectorize simple reduction max since GCC-13

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112961

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2023-12-11

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

The difference in IR is minor but causes the confusion:

  _29 = MAX_EXPR <_16, prephitmp_18>;
  prephitmp_23 = _29;

vs:
  prephitmp_23 = MAX_EXPR <_16, prephitmp_18>;