[PATCH] [OPENMP] llvm.loop.vectorize.enable metadata are lost after critical edge splitting

[Johannes Doerfert]

>>! In D5539#10, @zinovy.nis wrote:
> OK, if we agree to add `AU.addRequired<LoopInfo>();` for `BreakCriticalEdges` while removing it from `GVN` I'd be satisfied.
> 
> UPD. Sorry, it will not help as GVN doesn't call BreakCriticalEdges pass directly, but just calls a method from BreakCriticalEdges.cpp

Yeah, I just saw that too. So you need to add LoopInfo to the passes GVN needs as long as it calls the SplitCriticalEdge directly.

http://reviews.llvm.org/D5539