[llvm-branch-commits] [BOLT] Ignore hot markers as function references in updateELFSymbolTable (PR #92713)

[Amir Ayupov via llvm-branch-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/92713

If __hot_start marker aliases split function, we create non-sensical
__hot_start.cold symbols. Similar to how hot markers are ignored when
reading symbol table, explicitly ignore them as function references in
updating the symbol table and only update their values.

Test Plan: updated hot-end-symbol.s