[llvm-branch-commits] [BOLT] Use heuristic for matching BOLT split functions (PR #90424)

[Amir Ayupov via llvm-branch-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/90424

Use known order of BOLT split function symbols: fragment symbols
immediately precede the parent fragment symbol.

Depends On: https://github.com/llvm/llvm-project/pull/89648

Test Plan: updated cdsplit-symbol-names.s