return s.toString();
return s;
  public String toString() {    String s = register.toString();    int r = getRange();    if (r != 0) {       OPT_Register reg;       for (reg = register; r > 0; reg = reg.getNext(),r--);       s += ".."+reg;    }    if (type != null) {      if (type != VM_TypeReference.VALIDATION_TYPE) {        s  = s + "("+type.getName();        if (isExtant())       s += ",x";        if (isDeclaredType()) s += ",d";        if (isPreciseType())  s += ",p";        if (isPositiveInt())  s += ",+";        s += ")";      } else {        s += "(GUARD)";      }    }    return s.toString();  }