[llvm-branch-commits] [BOLT] Use BAT to register fragments (PR #87968)

[Amir Ayupov via llvm-branch-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/87968

BAT contains metadata about fragment relationships. Use it directly
before name-based matching. This removes warnings about control flow
between unrelated fragments.

Test Plan: TBD