[llvm] [Utils] Extract ProcessSubprogramAttachment from CloneFunctionInto (PR #114537)

[Felipe de Azevedo Piovezan via llvm-commits]

================
@@ -207,6 +207,15 @@ void CloneAndPruneFunctionInto(Function *NewFunc, const Function *OldFunc,
                                const char *NameSuffix = "",
                                ClonedCodeInfo *CodeInfo = nullptr);
 
+/// Process function's subprogram attachment to collect relevant debug
+/// information in DIFinder.
----------------
felipepiovezan wrote:

Could you elaborate on "relevant debug info"? Reading this comment, I can't quite tell what the function is doing

https://github.com/llvm/llvm-project/pull/114537