Distinguish between 'empty' and empty DAG marker.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81448 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/LLVMCConfigurationEmitter.cpp b/utils/TableGen/LLVMCConfigurationEmitter.cpp
index 8a5b36a..0807bff 100644
--- a/utils/TableGen/LLVMCConfigurationEmitter.cpp
+++ b/utils/TableGen/LLVMCConfigurationEmitter.cpp
@@ -89,7 +89,7 @@
 
 // isDagEmpty - is this DAG marked with an empty marker?
 bool isDagEmpty (const DagInit* d) {
-  return d->getOperator()->getAsString() == "empty";
+  return d->getOperator()->getAsString() == "empty_dag_marker";
 }
 
 // EscapeVariableName - Escape commas and other symbols not allowed