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

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml added a comment.

Kindly ping one more time.

This change was reverted due to the invalid loop info after eliminating an empty block. The only change I made is that I create a LoopInfo when creating BFI/BPI so that it's not impacted by previous empty block eliminated.


https://reviews.llvm.org/D22696