[llvm-branch-commits] [BOLT] Add local symbol hint to split fragment name (PR #88627)

[Amir Ayupov via llvm-branch-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/88627

Use the hint to link a split fragment to a specific local parent function.

Test Plan: Added split-local-hint.s