[Bug tree-optimization/28794] missed optimization with non-COND_EXPR and vrp and comparisions

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28794

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 55700
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55700&action=edit
Patch, still needs testcase