[Bug tree-optimization/32806] Missing optimization to remove backward dependencies

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=32806

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 55689
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55689&action=edit
compilable testcase