[llvm] [BOLT][DWARF] Fix debug info update issue with dwarf4 dwp (PR #155619)

[Paschalis Mpeis via llvm-commits]

================
@@ -0,0 +1,405 @@
+## This test checks updating debuginfo via dwarf4 dwp file
+# RUN: rm -rf %t && mkdir -p %t && cd %t
+# RUN: split-file %s %t
+# RUN: %clangxx -g -gdwarf-4 -gsplit-dwarf %t/main.s %t/callee.s -o main.exe
----------------
paschalis-mpeis wrote:

```suggestion
# RUN: %clangxx %cflags -g -gdwarf-4 -gsplit-dwarf %t/main.s %t/callee.s -o main.exe
```

https://github.com/llvm/llvm-project/pull/155619