[PATCH] D66782: SourceManager: Prefer Optional<MemoryBufferRef> over MemoryBuffer*

[Duncan P. N. Exon Smith via Phabricator via cfe-commits]

dexonsmith abandoned this revision.
dexonsmith added a comment.

I finished reimplementing this patch mostly as discussed, culminating in https://reviews.llvm.org/D89431. I've rebased https://reviews.llvm.org/D89431 on top of that. Abandoning this revision.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66782/new/

https://reviews.llvm.org/D66782