[Bug tree-optimization/101591] (a|b) ==/!= a -> (b & ~a) ==/!= 0 on gimple

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101591

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |pinskia at gcc dot 
gnu.org
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |ASSIGNED
           Keywords|                            |easyhack
   Last reconfirmed|                            |2021-07-23

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Mine, something like:
(for cmp (eq ne)
 (simplify
  (cmp:c (bit_ior @0 INTEGER_CST@1) @0)
  (cmp:c (bit_and @1 (bit_not @0)) { build_zero_cst (TREE_TYPE(@0)); })))

Note