[llvm] [MemProf] Track and report profiled sizes through cloning (PR #98382)

[Snehasish Kumar via llvm-commits]

https://github.com/snehasish commented:

If I understand correctly, the approach is to optionally track total size if requested. What is the overhead for this extra tracking? Can we consider making it unconditionally available all the time? 

https://github.com/llvm/llvm-project/pull/98382