[clang] [CodeGen][CIR] Split out Backend Diags to utils, impl CIR error-attr (PR #225966)

[Andy Kaylor via cfe-commits]

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@@ -91,55 +81,9 @@ class BackendConsumer : public ASTConsumer {
 
   // Links each entry in LinkModules into our module.  Returns true on error.
   bool LinkInModules(llvm::Module *M);
-
-  /// Get the best possible source location to represent a diagnostic that
-  /// may have associated debug info.
-  const FullSourceLoc getBestLocationFromDebugLoc(
-    const llvm::DiagnosticInfoWithLocationBase &D,
-    bool &BadDebugInfo, StringRef &Filename,
-    unsigned &Line, unsigned &Column) const;
-
-  std::optional<FullSourceLoc> getFunctionSourceLocation(
-    const llvm::Function &F) const;
-
-  void DiagnosticHandlerImpl(const llvm::DiagnosticInfo &DI);
-  /// Specialized handler for InlineAsm diagnostic.
-  /// \return True if the diagnostic has been successfully reported, false
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andykaylor wrote:

These comments were dropped in the refactor. Is that important?

https://github.com/llvm/llvm-project/pull/225966