[clang] [llvm] [CloneFunction][DebugInfo] Avoid cloning DILocalVariables of inlined functions (PR #75385)

[Adrian Prantl via cfe-commits]

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@@ -238,6 +238,13 @@ void llvm::CloneFunctionInto(Function *NewFunc, const Function *OldFunc,
       }
     }
 
+    // Avoid cloning local variables of subprograms that won't be cloned.
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adrian-prantl wrote:

Can you add a sentence explaining why some subprograms won't be cloned? Is it because they are inlined and a copy already exists?

https://github.com/llvm/llvm-project/pull/75385