[clang] [TBAA] Emit distinct TBAA tags for pointers with different depths,types. (PR #76612)

[John McCall via cfe-commits]

https://github.com/rjmccall commented:

Alright.  LGTM, but let's ping @AaronBallman and @efriedma-quic.

https://github.com/llvm/llvm-project/pull/76612