[llvm] [BOLT][DWARF] Add support for cross-cu references for debug-names (PR #86015)

[Amir Ayupov via llvm-commits]

================
@@ -146,6 +146,55 @@ static bool shouldIncludeVariable(const DWARFUnit &Unit, const DIE &Die) {
   return false;
 }
 
+bool static canProcess(const DWARFUnit &Unit, const DIE &Die,
----------------
aaupov wrote:

If you move this out into an NFC diff, I can stamp it

https://github.com/llvm/llvm-project/pull/86015