[llvm-branch-commits] [llvm] [compiler-rt] [ThinLTO][TypeProf] Implement vtable def import (PR #79381)

[Teresa Johnson via llvm-branch-commits]

https://github.com/teresajohnson approved this pull request.

lgtm with 2 minor comment nits

https://github.com/llvm/llvm-project/pull/79381