[PATCH] D136660: [clang] Replace BACKEND_PACKAGE_STRING with LLVM_VERSION_STRING

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added a comment.

Since the patch subject is called `[clang] ` I am deferring the flang cmake change to a separate patch.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136660/new/

https://reviews.llvm.org/D136660