[Bug tree-optimization/116835] [12/13/14/15 Regression] phiprop will prop back into a loop

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116835

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 60942
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60942&action=edit
Finally figured out how best to handle this

patch which I am testing.