[PATCH] D21237: LoopRotation: remove iterative calls to rotateLoops

[Eli Friedman via llvm-commits]

eli.friedman added a subscriber: eli.friedman.
eli.friedman added a comment.

In general, loop rotation is just "split the header block into two versions", which is precisely the sort of transform jump threading does.  Actually, the only reason JumpThreading doesn't rotate loops at the moment is that it's explicitly suppressed for loop headers.


http://reviews.llvm.org/D21237