[PATCH] D20907: [IfConversion] Bugfix: don't add Undef flag on use if reg is live.

[Jonas Paulsson via llvm-commits]

jonpa added a comment.

Pushed again as r277571, since everyone agrees this is better to have in trunk.

Do we need to do anything further with IfConversion liveness tracking at this point, or should it really work with correct live-in lists? (I am having a bit of second thoughts about this although we agreed before that this could be possible).


https://reviews.llvm.org/D20907