[Bug tree-optimization/15791] New: fold misses that two ADDR_EXPR of an arrary obvious not equal

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Noticed this when looking into PR 15779
int b[2];
int f()
{
  return &b[0] == &b[1]; //should be zero
}

It does dect if b[1] was say c[0].

-- 
           Summary: fold misses that two ADDR_EXPR of an arrary obvious not
                    equal
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Keywords: missed-optimization, TREE
          Severity: enhancement
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15791