[Bug tree-optimization/68844] [6 regression] gcc.dg/tree-ssa/ssa-dom-thread-4.c fails since r228306

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68844

--- Comment #1 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Created attachment 36987
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36987&action=edit
dom1 dump from r228306