[PATCH] D22141: [BFI] Add option to lazily calculate BFI

[Duncan P. N. Exon Smith via llvm-commits]

dexonsmith added a comment.

Just confirming my off-line conversation with Adam.  LazyBFI needs a fundamentally different contract than the current BFI, and having clients opt-in seems right.

Long term: I imagine once the new pass manager is the one-true-way there could be a way to unify LazyBFI and BFI (it solves everything, right?), but I don't see how we could reasonably block improving optimization remarks on that.


http://reviews.llvm.org/D22141