I can't speak for other denominations, but in Catholic philosophy, it's not so much a case of whether it attains consciousness (whatever that may mean now or in the future), but whether it has a soul.
From that perspective, no, machines cannot be baptized, nor can they be Christians, and Jesus cannot save them (because they are not fallen).
From that perspective, no, machines cannot be baptized, nor can they be Christians, and Jesus cannot save them (because they are not fallen).