[Bug tree-optimization/17598] New: an extra addition when comparing address of &a->b and &c->b.

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

Function g and g1 should produce the same code, this is not a regression, I noticed this when looking 
into PR 8361.
struct f
{
  int i;
  int j;
};
int g(struct f *x, struct f *y)
{
  return &x->j == &y->j;
}
int g1(struct f *x, struct f *y)
{
  return x == y;
}

-- 
           Summary: an extra addition when comparing address of &a->b and
                    &c->b.
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          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=17598