The line number in the comment (and all the other ones) will bit rot any moment. Don't think they are worth putting in. Maybe more confusing actually once they point to the wrong line.
I really think we should keep these comments here, before it was not really obvious for which line the prefetch is. It could be for line 119 or line 121.
Mhm, no. This would need a "&" in the beginning, and then i am not sure if the compiler wouldn't just derefence it, and prefetch that address, which is not the point of this prefetch.