--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop/src/org/graalvm/compiler/loop/LoopsData.java	2017-02-15 17:06:12.016471226 -0800
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.loop;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import org.graalvm.compiler.core.common.CollectionsFactory;
+import org.graalvm.compiler.core.common.cfg.Loop;
+import org.graalvm.compiler.debug.Debug;
+import org.graalvm.compiler.debug.Debug.Scope;
+import org.graalvm.compiler.graph.Node;
+import org.graalvm.compiler.nodes.LoopBeginNode;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.cfg.Block;
+import org.graalvm.compiler.nodes.cfg.ControlFlowGraph;
+
+public class LoopsData {
+
+    private Map<Loop<Block>, LoopEx> loopToEx = CollectionsFactory.newIdentityMap();
+    private Map<LoopBeginNode, LoopEx> loopBeginToEx = Node.newIdentityMap();
+    private ControlFlowGraph cfg;
+
+    @SuppressWarnings("try")
+    public LoopsData(final StructuredGraph graph) {
+        try (Scope s = Debug.scope("ControlFlowGraph")) {
+            cfg = ControlFlowGraph.compute(graph, true, true, true, true);
+        } catch (Throwable e) {
+            throw Debug.handle(e);
+        }
+
+        for (Loop<Block> loop : cfg.getLoops()) {
+            LoopEx ex = new LoopEx(loop, this);
+            loopToEx.put(loop, ex);
+            loopBeginToEx.put(ex.loopBegin(), ex);
+        }
+    }
+
+    public LoopEx loop(Loop<?> loop) {
+        return loopToEx.get(loop);
+    }
+
+    public LoopEx loop(LoopBeginNode loopBegin) {
+        return loopBeginToEx.get(loopBegin);
+    }
+
+    public Collection<LoopEx> loops() {
+        return loopToEx.values();
+    }
+
+    public List<LoopEx> outerFirst() {
+        ArrayList<LoopEx> loops = new ArrayList<>(loops());
+        Collections.sort(loops, new Comparator<LoopEx>() {
+
+            @Override
+            public int compare(LoopEx o1, LoopEx o2) {
+                return o1.loop().getDepth() - o2.loop().getDepth();
+            }
+        });
+        return loops;
+    }
+
+    public List<LoopEx> innerFirst() {
+        ArrayList<LoopEx> loops = new ArrayList<>(loops());
+        Collections.sort(loops, new Comparator<LoopEx>() {
+
+            @Override
+            public int compare(LoopEx o1, LoopEx o2) {
+                return o2.loop().getDepth() - o1.loop().getDepth();
+            }
+        });
+        return loops;
+    }
+
+    public Collection<LoopEx> countedLoops() {
+        List<LoopEx> counted = new LinkedList<>();
+        for (LoopEx loop : loops()) {
+            if (loop.isCounted()) {
+                counted.add(loop);
+            }
+        }
+        return counted;
+    }
+
+    public void detectedCountedLoops() {
+        for (LoopEx loop : loops()) {
+            loop.detectCounted();
+        }
+    }
+
+    public ControlFlowGraph getCFG() {
+        return cfg;
+    }
+
+    public InductionVariable getInductionVariable(ValueNode value) {
+        InductionVariable match = null;
+        for (LoopEx loop : loops()) {
+            InductionVariable iv = loop.getInductionVariables().get(value);
+            if (iv != null) {
+                if (match != null) {
+                    return null;
+                }
+                match = iv;
+            }
+        }
+        return match;
+    }
+
+    /**
+     * Deletes any nodes created within the scope of this object that have no usages.
+     */
+    public void deleteUnusedNodes() {
+        for (LoopEx loop : loops()) {
+            loop.deleteUnusedNodes();
+        }
+    }
+}