[DebugInfo] Changed way for getting callee function

Author: sga-sc

clang/lib/CodeGen/CGDebugInfo.cpp

@@ -4805,7 +4805,7 @@ void CGDebugInfo::EmitFuncDeclForCallSite(llvm::CallBase *CallOrInvoke,
                                           const FunctionDecl *CalleeDecl) {
   if (!CallOrInvoke)
     return;
-  auto *Func = CallOrInvoke->getCalledFunction();
+  auto *Func = dyn_cast_or_null<Function>(CallOrInvoke->getCalledOperand());
   if (!Func)
     return;
   if (Func->getSubprogram())