[Bug tree-optimization/15784] New: fold misses bitwise optimization

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

int f(int x)
{
  return x & ~x;  // should be 0 before getting to the RTL level
}
int h(int x)
{
  return x | ~x; // should be -1 before getting to the RTL level
}

-- 
           Summary: fold misses bitwise optimization
           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=15784