[clang] [llvm] [clang][DebugInfo] Add virtual call-site target information in DWARF. (PR #167666)

[Carlos Alberto Enciso via cfe-commits]

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@@ -6295,6 +6295,8 @@ RValue CodeGenFunction::EmitCall(const CGFunctionInfo &CallInfo,
       DI->EmitFuncDeclForCallSite(
           CI, DI->getFunctionType(CalleeDecl, ResTy, Args), CalleeGlobalDecl);
     }
+    // Collect call site target information.
+    DI->addCallTarget(CI->getCalledFunction(), CalleeDecl, CI);
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CarlosAlbertoEnciso wrote:

There are 3 items that are required to have a complete entry for the call-site information:
``Function Name``, ``Metadata Node`` and ``Instruction``. Which they are collected as a whole set or individually.
Here we are mainly collecting ``CI``, that can complete the entry if we have collected already ``Metadata Node``.

https://github.com/llvm/llvm-project/pull/167666