[PATCH] D47973: [ADT] Change the behavior of `StringRef::rsplit()` when the separator is not found.

[Vedant Kumar via Phabricator via llvm-commits]

vsk added a comment.

Thanks for the patch. The StringRef change itself looks fine, but please make sure to update the callsites in-tree (e.g in llvm, clang, lldb etc).


Repository:
  rL LLVM

https://reviews.llvm.org/D47973