[llvm-branch-commits] [BOLT][NFCI] Use heuristic for matching split global functions (PR #90429)

[Amir Ayupov via llvm-branch-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/90429

There should be no functional change, only faster fragment matching for
large BOLTed binaries where all fragments of global parent functions
are put under bolt-pseudo.o file symbol.

Test Plan: NFC