--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ProfilingInfoTest.java	2016-12-09 00:47:43.214636561 -0800
@@ -0,0 +1,337 @@
+/*
+ * Copyright (c) 2013, 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.core.test;
+
+import java.io.Serializable;
+
+import jdk.vm.ci.meta.JavaTypeProfile;
+import jdk.vm.ci.meta.ProfilingInfo;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+import jdk.vm.ci.meta.ResolvedJavaType;
+import jdk.vm.ci.meta.TriState;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Tests profiling information provided by the runtime.
+ * <p>
+ * NOTE: These tests are actually not very robust. The problem is that only partial profiling
+ * information may be gathered for any given method. For example, HotSpot's advanced compilation
+ * policy can decide to only gather partial profiles in a first level compilation (see
+ * AdvancedThresholdPolicy::common(...) in advancedThresholdPolicy.cpp). Because of this,
+ * occasionally tests for {@link ProfilingInfo#getNullSeen(int)} can fail since HotSpot only set's
+ * the null_seen bit when doing full profiling.
+ */
+public class ProfilingInfoTest extends GraalCompilerTest {
+
+    private static final int N = 10;
+    private static final double DELTA = 1d / Integer.MAX_VALUE;
+
+    @Test
+    public void testBranchTakenProbability() {
+        ProfilingInfo info = profile("branchProbabilitySnippet", 0);
+        Assert.assertEquals(0.0, info.getBranchTakenProbability(1), DELTA);
+        Assert.assertEquals(N, info.getExecutionCount(1));
+        Assert.assertEquals(-1.0, info.getBranchTakenProbability(8), DELTA);
+        Assert.assertEquals(0, info.getExecutionCount(8));
+
+        info = profile("branchProbabilitySnippet", 1);
+        Assert.assertEquals(1.0, info.getBranchTakenProbability(1), DELTA);
+        Assert.assertEquals(N, info.getExecutionCount(1));
+        Assert.assertEquals(0.0, info.getBranchTakenProbability(8), DELTA);
+        Assert.assertEquals(N, info.getExecutionCount(8));
+
+        info = profile("branchProbabilitySnippet", 2);
+        Assert.assertEquals(1.0, info.getBranchTakenProbability(1), DELTA);
+        Assert.assertEquals(N, info.getExecutionCount(1));
+        Assert.assertEquals(1.0, info.getBranchTakenProbability(8), DELTA);
+        Assert.assertEquals(N, info.getExecutionCount(8));
+
+        continueProfiling(3 * N, "branchProbabilitySnippet", 0);
+        Assert.assertEquals(0.25, info.getBranchTakenProbability(1), DELTA);
+        Assert.assertEquals(4 * N, info.getExecutionCount(1));
+        Assert.assertEquals(1.0, info.getBranchTakenProbability(8), DELTA);
+        Assert.assertEquals(N, info.getExecutionCount(8));
+
+        resetProfile("branchProbabilitySnippet");
+        Assert.assertEquals(-1.0, info.getBranchTakenProbability(1), DELTA);
+        Assert.assertEquals(0, info.getExecutionCount(1));
+        Assert.assertEquals(-1.0, info.getBranchTakenProbability(8), DELTA);
+        Assert.assertEquals(0, info.getExecutionCount(8));
+    }
+
+    public static int branchProbabilitySnippet(int value) {
+        if (value == 0) {
+            return -1;
+        } else if (value == 1) {
+            return -2;
+        } else {
+            return -3;
+        }
+    }
+
+    @Test
+    public void testSwitchProbabilities() {
+        ProfilingInfo info = profile("switchProbabilitySnippet", 0);
+        Assert.assertArrayEquals(new double[]{1.0, 0.0, 0.0}, info.getSwitchProbabilities(1), DELTA);
+
+        info = profile("switchProbabilitySnippet", 1);
+        Assert.assertArrayEquals(new double[]{0.0, 1.0, 0.0}, info.getSwitchProbabilities(1), DELTA);
+
+        info = profile("switchProbabilitySnippet", 2);
+        Assert.assertArrayEquals(new double[]{0.0, 0.0, 1.0}, info.getSwitchProbabilities(1), DELTA);
+
+        resetProfile("switchProbabilitySnippet");
+        Assert.assertNull(info.getSwitchProbabilities(1));
+    }
+
+    public static int switchProbabilitySnippet(int value) {
+        switch (value) {
+            case 0:
+                return -1;
+            case 1:
+                return -2;
+            default:
+                return -3;
+        }
+    }
+
+    @Test
+    public void testProfileInvokeVirtual() {
+        testTypeProfile("invokeVirtualSnippet", 1);
+    }
+
+    public static int invokeVirtualSnippet(Object obj) {
+        return obj.hashCode();
+    }
+
+    @Test
+    public void testTypeProfileInvokeInterface() {
+        testTypeProfile("invokeInterfaceSnippet", 1);
+    }
+
+    public static int invokeInterfaceSnippet(CharSequence a) {
+        return a.length();
+    }
+
+    @Test
+    public void testTypeProfileCheckCast() {
+        testTypeProfile("checkCastSnippet", 1);
+    }
+
+    public static Serializable checkCastSnippet(Object obj) {
+        try {
+            return (Serializable) obj;
+        } catch (ClassCastException e) {
+            return null;
+        }
+    }
+
+    @Test
+    public void testTypeProfileInstanceOf() {
+        testTypeProfile("instanceOfSnippet", 1);
+    }
+
+    public static boolean instanceOfSnippet(Object obj) {
+        return obj instanceof Serializable;
+    }
+
+    private void testTypeProfile(String testSnippet, int bci) {
+        ResolvedJavaType stringType = getMetaAccess().lookupJavaType(String.class);
+        ResolvedJavaType stringBuilderType = getMetaAccess().lookupJavaType(StringBuilder.class);
+
+        ProfilingInfo info = profile(testSnippet, "ABC");
+        JavaTypeProfile typeProfile = info.getTypeProfile(bci);
+        Assert.assertEquals(0.0, typeProfile.getNotRecordedProbability(), DELTA);
+        Assert.assertEquals(1, typeProfile.getTypes().length);
+        Assert.assertEquals(stringType, typeProfile.getTypes()[0].getType());
+        Assert.assertEquals(1.0, typeProfile.getTypes()[0].getProbability(), DELTA);
+
+        continueProfiling(testSnippet, new StringBuilder());
+        typeProfile = info.getTypeProfile(bci);
+        Assert.assertEquals(0.0, typeProfile.getNotRecordedProbability(), DELTA);
+        Assert.assertEquals(2, typeProfile.getTypes().length);
+        Assert.assertEquals(stringType, typeProfile.getTypes()[0].getType());
+        Assert.assertEquals(stringBuilderType, typeProfile.getTypes()[1].getType());
+        Assert.assertEquals(0.5, typeProfile.getTypes()[0].getProbability(), DELTA);
+        Assert.assertEquals(0.5, typeProfile.getTypes()[1].getProbability(), DELTA);
+
+        resetProfile(testSnippet);
+        typeProfile = info.getTypeProfile(bci);
+        Assert.assertNull(typeProfile);
+    }
+
+    @Test
+    public void testExceptionSeen() {
+        // NullPointerException
+        ProfilingInfo info = profile("nullPointerExceptionSnippet", 5);
+        Assert.assertEquals(TriState.FALSE, info.getExceptionSeen(1));
+
+        info = profile("nullPointerExceptionSnippet", (Object) null);
+        Assert.assertEquals(TriState.TRUE, info.getExceptionSeen(1));
+
+        resetProfile("nullPointerExceptionSnippet");
+        Assert.assertEquals(TriState.FALSE, info.getExceptionSeen(1));
+
+        // ArrayOutOfBoundsException
+        info = profile("arrayIndexOutOfBoundsExceptionSnippet", new int[1]);
+        Assert.assertEquals(TriState.FALSE, info.getExceptionSeen(2));
+
+        info = profile("arrayIndexOutOfBoundsExceptionSnippet", new int[0]);
+        Assert.assertEquals(TriState.TRUE, info.getExceptionSeen(2));
+
+        resetProfile("arrayIndexOutOfBoundsExceptionSnippet");
+        Assert.assertEquals(TriState.FALSE, info.getExceptionSeen(2));
+
+        // CheckCastException
+        info = profile("checkCastExceptionSnippet", "ABC");
+        Assert.assertEquals(TriState.FALSE, info.getExceptionSeen(1));
+
+        info = profile("checkCastExceptionSnippet", 5);
+        Assert.assertEquals(TriState.TRUE, info.getExceptionSeen(1));
+
+        resetProfile("checkCastExceptionSnippet");
+        Assert.assertEquals(TriState.FALSE, info.getExceptionSeen(1));
+
+        // Invoke with exception
+        info = profile("invokeWithExceptionSnippet", false);
+        Assert.assertEquals(TriState.FALSE, info.getExceptionSeen(1));
+
+        info = profile("invokeWithExceptionSnippet", true);
+        Assert.assertEquals(TriState.TRUE, info.getExceptionSeen(1));
+
+        resetProfile("invokeWithExceptionSnippet");
+        Assert.assertEquals(TriState.FALSE, info.getExceptionSeen(1));
+    }
+
+    public static int nullPointerExceptionSnippet(Object obj) {
+        try {
+            return obj.hashCode();
+        } catch (NullPointerException e) {
+            return 1;
+        }
+    }
+
+    public static int arrayIndexOutOfBoundsExceptionSnippet(int[] array) {
+        try {
+            return array[0];
+        } catch (ArrayIndexOutOfBoundsException e) {
+            return 1;
+        }
+    }
+
+    public static int checkCastExceptionSnippet(Object obj) {
+        try {
+            return ((String) obj).length();
+        } catch (ClassCastException e) {
+            return 1;
+        }
+    }
+
+    public static int invokeWithExceptionSnippet(boolean doThrow) {
+        try {
+            return throwException(doThrow);
+        } catch (IllegalArgumentException e) {
+            return 1;
+        }
+    }
+
+    private static int throwException(boolean doThrow) {
+        if (doThrow) {
+            throw new IllegalArgumentException();
+        } else {
+            return 1;
+        }
+    }
+
+    @Test
+    public void testNullSeen() {
+        testNullSeen("instanceOfSnippet");
+        testNullSeen("checkCastSnippet");
+    }
+
+    private void testNullSeen(String snippet) {
+        ProfilingInfo info = profile(snippet, 1);
+        Assert.assertEquals(TriState.FALSE, info.getNullSeen(1));
+
+        continueProfiling(snippet, "ABC");
+        Assert.assertEquals(TriState.FALSE, info.getNullSeen(1));
+
+        continueProfiling(snippet, new Object());
+        Assert.assertEquals(TriState.FALSE, info.getNullSeen(1));
+
+        if (TriState.TRUE == info.getNullSeen(1)) {
+            // See the javadoc comment for ProfilingInfoTest.
+            continueProfiling(snippet, (Object) null);
+            Assert.assertEquals(TriState.TRUE, info.getNullSeen(1));
+
+            continueProfiling(snippet, 0.0);
+            Assert.assertEquals(TriState.TRUE, info.getNullSeen(1));
+
+            continueProfiling(snippet, new Object());
+            Assert.assertEquals(TriState.TRUE, info.getNullSeen(1));
+        }
+
+        resetProfile(snippet);
+        Assert.assertEquals(TriState.FALSE, info.getNullSeen(1));
+    }
+
+    private ProfilingInfo profile(String methodName, Object... args) {
+        return profile(true, N, methodName, args);
+    }
+
+    private void continueProfiling(String methodName, Object... args) {
+        profile(false, N, methodName, args);
+    }
+
+    private void continueProfiling(int executions, String methodName, Object... args) {
+        profile(false, executions, methodName, args);
+    }
+
+    private ProfilingInfo profile(boolean resetProfile, int executions, String methodName, Object... args) {
+        ResolvedJavaMethod javaMethod = getResolvedJavaMethod(methodName);
+        Assert.assertTrue(javaMethod.isStatic());
+        if (resetProfile) {
+            javaMethod.reprofile();
+        }
+
+        for (int i = 0; i < executions; ++i) {
+            try {
+                invoke(javaMethod, null, args);
+            } catch (Throwable e) {
+                Assert.fail("method should not throw an exception: " + e.toString());
+            }
+        }
+
+        ProfilingInfo info = javaMethod.getProfilingInfo();
+        // The execution counts are low so force maturity
+        info.setMature();
+        return info;
+    }
+
+    private void resetProfile(String methodName) {
+        ResolvedJavaMethod javaMethod = getResolvedJavaMethod(methodName);
+        javaMethod.reprofile();
+    }
+}