In order to make it more clear what the incoming types are for this translation (e.g. two `I32X4`s narrow to an `I16X8`), this change explicitly sets the type to which to bitcast (if necessary) the incoming values.
In order to make it more clear what the incoming types are for this translation (e.g. two `I32X4`s narrow to an `I16X8`), this change explicitly sets the type to which to bitcast (if necessary) the incoming values.