[clang] [llvm] [SystemZ][z/OS] Update autoconversion functions to improve support for UTF-8 (PR #98652)

[Abhina Sree via cfe-commits]

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@@ -70,6 +70,11 @@ class FileEntryRef {
   const FileEntry &getFileEntry() const {
     return *getBaseMapEntry().second->V.get<FileEntry *>();
   }
+#ifdef __MVS__
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abhina-sree wrote:

There are a lot of uses of the const function so we would hit a lot of errors if we got rid of this. I'm not sure if there is a way to reduce the conditional directives. Other platforms will see errors about unused functions if the conditional directives were removed

https://github.com/llvm/llvm-project/pull/98652