[llvm] [TSan, SanitizerBinaryMetadata] Improve instrument for derived pointers via phis/selects (PR #132752)

[Marco Elver via llvm-commits]

https://github.com/melver requested changes to this pull request.

I'm confused - so this change is superseded by: https://github.com/llvm/llvm-project/pull/132756 ?

https://github.com/llvm/llvm-project/pull/132752