protected final OPT_IntConstantOperand CAL16 (OPT_Operand o) { return  IC(OPT_Bits.PPCMaskLower16(IV(o)));
protected final OPT_IntConstantOperand CAL16 (Address a) { return  IC(OPT_Bits.PPCMaskLower16(a.toWord().toOffset()));
  protected final OPT_IntConstantOperand CAL16 (OPT_Operand o) {    return  IC(OPT_Bits.PPCMaskLower16(IV(o)));  }