fixup! revert ModuleDebugInfoPrinter changes for now

Author: Michael137

llvm/lib/Analysis/ModuleDebugInfoPrinter.cpp

@@ -44,17 +44,13 @@ static void printModuleDebugInfo(raw_ostream &O, const Module *M,
   for (DICompileUnit *CU : Finder.compile_units()) {
     O << "Compile unit: ";
 
-    DISourceLanguageName Lang = CU->getSourceLanguage();
-    auto LangStr =
-        Lang.hasVersionedName()
-            ? dwarf::SourceLanguageNameString(
-                  static_cast<llvm::dwarf::SourceLanguageName>(Lang.getName()))
-            : dwarf::LanguageString(Lang.getName());
-
-    if (!LangStr.empty())
-      O << LangStr;
+    auto Lang =
+        dwarf::LanguageString(CU->getSourceLanguage().getUnversionedName());
+    if (!Lang.empty())
+      O << Lang;
     else
-      O << "unknown-language(" << CU->getSourceLanguage().getName() << ")";
+      O << "unknown-language(" << CU->getSourceLanguage().getUnversionedName()
+        << ")";
     printFile(O, CU->getFilename(), CU->getDirectory());
     O << '\n';
   }