[Bug tree-optimization/64992] More optimize opportunity

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64992

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note for rotate it is as simple as:
(for cmp (eq ne)
 (simplify
  (cmp (rotate @0 INTEGER_CST@1) INTEGER_CST@2)
  (cmp @0 (rotate @2 @1))))

Let me see if that is already there or not and test that one out.