[PATCH] D22696: [CodeGenPrep] Skip merging empty case blocks

[David Li via llvm-commits]

davidxl added a comment.

Do you know how often BPI/BFI is actually needed?  In other words, among all functions compiled, how many of them reach to the point that BFI is needed? If you have some stats that will be great. If the data shows not often -- then BPI/BFI may need to be computed in a lazy way.


https://reviews.llvm.org/D22696