return MOVE_FOLDED;
return DefUseEffect.MOVE_FOLDED;
  private static byte long2Int(OPT_Instruction s) {    if (CF_INT) {      OPT_Operand op = Unary.getVal(s);      if (op.isLongConstant()) {        // CONSTANT: FOLD        long val = op.asLongConstant().value;        Move.mutate(s, INT_MOVE, Unary.getClearResult(s), IC((int)val));        return MOVE_FOLDED;      }    }    return UNCHANGED;  }