src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases/src/org/graalvm/compiler/phases/graph/PostOrderNodeIterator.java
--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases/src/org/graalvm/compiler/phases/graph/PostOrderNodeIterator.java Fri Feb 02 10:37:48 2018 -0500
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases/src/org/graalvm/compiler/phases/graph/PostOrderNodeIterator.java Fri Feb 02 17:28:17 2018 -0800
@@ -27,6 +27,8 @@
import java.util.Deque;
import java.util.Set;
+import org.graalvm.collections.EconomicMap;
+import org.graalvm.collections.Equivalence;
import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.graph.NodeBitMap;
import org.graalvm.compiler.nodes.AbstractBeginNode;
@@ -41,8 +43,6 @@
import org.graalvm.compiler.nodes.LoopBeginNode;
import org.graalvm.compiler.nodes.LoopEndNode;
import org.graalvm.compiler.nodes.StructuredGraph;
-import org.graalvm.util.Equivalence;
-import org.graalvm.util.EconomicMap;
/**
* A PostOrderNodeIterator iterates the fixed nodes of the graph in post order starting from a