return (addr.toInt() >> WORD_OFFSET) & (INTS_IN_BITMAP - 1);
return (addr.toWord().rshl(WORD_OFFSET).toInt() & (INTS_IN_BITMAP - 1));
  private static final int addressToWord(VM_Address addr) //throws VM_PragmaInline   {    return (addr.toInt() >> WORD_OFFSET) & (INTS_IN_BITMAP - 1);  }