--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/ControlSplitNode.java	2017-03-20 17:40:20.000000000 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/ControlSplitNode.java	2017-03-20 17:40:20.000000000 -0700
@@ -42,10 +42,21 @@
     public abstract double probability(AbstractBeginNode successor);
 
     /**
+     * Attempts to set the probability for the given successor to the passed value (which has to be
+     * in the range of 0.0 and 1.0). Returns whether setting the probability was successful.
+     */
+    public abstract boolean setProbability(AbstractBeginNode successor, double value);
+
+    /**
      * Primary successor of the control split. Data dependencies on the node have to be scheduled in
      * the primary successor.
      *
      * @return the primary successor
      */
     public abstract AbstractBeginNode getPrimarySuccessor();
+
+    /**
+     * Returns the number of successors.
+     */
+    public abstract int getSuccessorCount();
 }