[clang] Patch series to reapply #118734 and substantially improve it (PR #120534)

[Erich Keane via cfe-commits]

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@@ -43,7 +43,8 @@ class LLVM_LIBRARY_VISIBILITY XCoreTargetInfo : public TargetInfo {
   void getTargetDefines(const LangOptions &Opts,
                         MacroBuilder &Builder) const override;
 
-  ArrayRef<Builtin::Info> getTargetBuiltins() const override;
+  std::pair<const llvm::StringTable *, ArrayRef<Builtin::Info>>
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erichkeane wrote:

The series fixing it up is fine.  Particularly if it stays in 1 PR, where this will end up getting 'squashed' anyway.

https://github.com/llvm/llvm-project/pull/120534