As far as I know, no religion actually came out and professed they condemned the practice of torture, and we have at least one unfortunate era in the Catholic Church where it was tacitly condoned.
One of the brilliant points to the founding of the United States was that "cruel and unusual" punishments were forbidden. Until recently, we held fast to that tenet.
The arguments that it's useful to extract information in a critical situation are false. The purpose of torture, as brutally explained in George Orwell's 1984, is......torture. Because we can.
I can think of no better reasons why laws must be instituted and upheld. The argument that if it's made legal, then it's ok is false as well, since the very act violates the Rights of the victim.