[clang][OpenMP] Fix missing DI for __kmpc_global_thread_num

Author: ivanradanov

clang/lib/CodeGen/CGOpenMPRuntime.cpp

@@ -1441,6 +1441,7 @@ llvm::Value *CGOpenMPRuntime::getThreadID(CodeGenFunction &CGF,
     setLocThreadIdInsertPt(CGF);
   CGBuilderTy::InsertPointGuard IPG(CGF.Builder);
   CGF.Builder.SetInsertPoint(Elem.second.ServiceInsertPt);
+  auto DL = ApplyDebugLocation::CreateDefaultArtificial(CGF, Loc);
   llvm::CallInst *Call = CGF.Builder.CreateCall(
       OMPBuilder.getOrCreateRuntimeFunction(CGM.getModule(),
                                             OMPRTL___kmpc_global_thread_num),