--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/ControlSplitNode.java	Fri Feb 02 10:37:48 2018 -0500
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/ControlSplitNode.java	Fri Feb 02 17:28:17 2018 -0800
@@ -49,7 +49,7 @@
 
     /**
      * Primary successor of the control split. Data dependencies on the node have to be scheduled in
-     * the primary successor.
+     * the primary successor. Returns null if data dependencies are not expected.
      *
      * @return the primary successor
      */