--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.api.directives.test/src/org/graalvm/compiler/api/directives/test/IterationDirectiveTest.java	Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2015, 2015, 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.api.directives.test;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import org.graalvm.compiler.api.directives.GraalDirectives;
+import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.graph.iterators.NodeIterable;
+import org.graalvm.compiler.nodes.LoopBeginNode;
+import org.graalvm.compiler.nodes.StructuredGraph;
+
+public class IterationDirectiveTest extends GraalCompilerTest {
+
+    public static int loopFrequencySnippet(int arg) {
+        int x = arg;
+        while (GraalDirectives.injectIterationCount(128, x > 1)) {
+            GraalDirectives.controlFlowAnchor(); // prevent loop peeling or unrolling
+            if (x % 2 == 0) {
+                x /= 2;
+            } else {
+                x = 3 * x + 1;
+            }
+        }
+        return x;
+    }
+
+    @Test
+    public void testLoopFrequency() {
+        test("loopFrequencySnippet", 7);
+    }
+
+    @Override
+    protected boolean checkLowTierGraph(StructuredGraph graph) {
+        NodeIterable<LoopBeginNode> loopBeginNodes = graph.getNodes(LoopBeginNode.TYPE);
+        Assert.assertEquals("LoopBeginNode count", 1, loopBeginNodes.count());
+
+        LoopBeginNode loopBeginNode = loopBeginNodes.first();
+        Assert.assertEquals("loop frequency of " + loopBeginNode, 128, loopBeginNode.loopFrequency(), 0);
+
+        return true;
+    }
+}