[Bug middle-end/47673] Redundant NULL check

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47673

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.02.10 00:06:01
          Component|tree-optimization           |middle-end
     Ever Confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-02-10 00:06:01 UTC ---
  if (p2->p1 + -1 <= -3B)

We should disable the optimization which converts 
p2->p1 != 0 && p2->p1 != (struct s1 *) -1 into p2->p1 + -1 <= -3B for pointer
types.