[clang] [clang] Language to String function (PR #69487)

[Aaron Ballman via cfe-commits]

================
@@ -10,9 +10,49 @@
 #include "clang/Config/config.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormatVariadic.h"
 #include "llvm/TargetParser/Triple.h"
 using namespace clang;
 
+const char *clang::languageToString(Language L) {
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AaronBallman wrote:

```suggestion
StringRef clang::languageToString(Language L) {
```

https://github.com/llvm/llvm-project/pull/69487