[Bug tree-optimization/68776] [6 regression] gcc.dg/vect/vect-widen-mult-const-[su]16.c failures since r226675

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68776

--- Comment #1 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Created attachment 36947
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36947&action=edit
Vectorization dump for r226675