| /* |
| * Copyright (c) 2016, 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.util.HashMap; |
| |
| import org.graalvm.compiler.core.phases.HighTier; |
| import org.graalvm.compiler.core.phases.MidTier; |
| import org.graalvm.compiler.nodes.InvokeNode; |
| import org.graalvm.compiler.nodes.InvokeWithExceptionNode; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.extended.LoadHubNode; |
| import org.graalvm.compiler.nodes.extended.LoadMethodNode; |
| import org.graalvm.compiler.options.OptionValues; |
| import org.graalvm.compiler.phases.OptimisticOptimizations; |
| import org.graalvm.compiler.phases.tiers.MidTierContext; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class HashCodeTest extends GraalCompilerTest { |
| |
| static class OverrideHashCode { |
| @Override |
| public int hashCode() { |
| return 42; |
| } |
| } |
| |
| static final class DontOverrideHashCode { |
| } |
| |
| public static final Object NonOverridingConstant = new Object(); |
| public static final Object OverridingConstant = new OverrideHashCode(); |
| |
| private static void initialize(Class<?> c) { |
| try { |
| Class.forName(c.getName(), true, c.getClassLoader()); |
| } catch (ClassNotFoundException e) { |
| throw new AssertionError(e); |
| } |
| } |
| |
| public static final int hashCodeSnippet01(Object o) { |
| return o.hashCode(); |
| } |
| |
| public static final int systemIdentityHashCodeSnippet01(Object o) { |
| return System.identityHashCode(o); |
| } |
| |
| public static final int hashCodeFoldSnippet01() { |
| return NonOverridingConstant.hashCode(); |
| } |
| |
| public static final int identityHashCodeFoldSnippet01() { |
| return System.identityHashCode(NonOverridingConstant); |
| } |
| |
| public static final int hashCodeNoFoldOverridingSnippet01(Object o) { |
| return o.hashCode(); |
| } |
| |
| public static final int identityHashCodeFoldOverridingSnippet01() { |
| return System.identityHashCode(OverridingConstant); |
| } |
| |
| public static final int dontOverrideHashCodeFinalClass(DontOverrideHashCode o) { |
| return o.hashCode(); |
| } |
| |
| @Test |
| public void test01() { |
| test("hashCodeSnippet01", new Object()); |
| } |
| |
| @Test |
| public void test02() { |
| test("systemIdentityHashCodeSnippet01", new Object()); |
| } |
| |
| @Test |
| public void test03() { |
| StructuredGraph g = buildGraphAfterMidTier("hashCodeFoldSnippet01"); |
| Assert.assertEquals(0, g.getNodes().filter(InvokeNode.class).count()); |
| } |
| |
| @Test |
| public void test04() { |
| StructuredGraph g = buildGraphAfterMidTier("identityHashCodeFoldSnippet01"); |
| Assert.assertEquals(0, g.getNodes().filter(InvokeNode.class).count()); |
| } |
| |
| @Test |
| public void test05() { |
| checkForGuardedIntrinsicPattern("hashCodeNoFoldOverridingSnippet01"); |
| |
| Object nullObject = null; |
| test("hashCodeNoFoldOverridingSnippet01", nullObject); |
| test("hashCodeNoFoldOverridingSnippet01", new Object()); |
| test("hashCodeNoFoldOverridingSnippet01", new DontOverrideHashCode()); |
| } |
| |
| @Test |
| public void test06() { |
| StructuredGraph g = buildGraphAfterMidTier("identityHashCodeFoldOverridingSnippet01"); |
| Assert.assertEquals(0, g.getNodes().filter(InvokeNode.class).count()); |
| } |
| |
| @Test |
| public void test07() { |
| initialize(DontOverrideHashCode.class); |
| StructuredGraph g = buildGraphAfterMidTier("dontOverrideHashCodeFinalClass"); |
| Assert.assertEquals(0, g.getNodes().filter(InvokeNode.class).count()); |
| } |
| |
| public static final int hashCodeInterface(Appendable o) { |
| return o.hashCode(); |
| } |
| |
| @Test |
| public void test08() { |
| initialize(Appendable.class); |
| checkForGuardedIntrinsicPattern("hashCodeInterface"); |
| |
| // Ensure the profile for the dispatch in hashCodeSnippet01 |
| // has a receiver type that does not select Object.hashCode intrinsic |
| hashCodeSnippet01(new HashMap<>()); |
| checkForGuardedIntrinsicPattern("hashCodeSnippet01"); |
| } |
| |
| private void checkForGuardedIntrinsicPattern(String name) { |
| StructuredGraph g = parseForCompile(getResolvedJavaMethod(name)); |
| int invokeNodeCount = g.getNodes().filter(InvokeNode.class).count(); |
| int invokeWithExceptionNodeCount = g.getNodes().filter(InvokeWithExceptionNode.class).count(); |
| Assert.assertEquals(1, invokeNodeCount + invokeWithExceptionNodeCount); |
| Assert.assertEquals(1, g.getNodes().filter(LoadHubNode.class).count()); |
| Assert.assertEquals(1, g.getNodes().filter(LoadMethodNode.class).count()); |
| } |
| |
| @SuppressWarnings("try") |
| private StructuredGraph buildGraphAfterMidTier(String name) { |
| StructuredGraph g = parseForCompile(getResolvedJavaMethod(name)); |
| OptionValues options = getInitialOptions(); |
| new HighTier(options).apply(g, getDefaultHighTierContext()); |
| new MidTier(options).apply(g, new MidTierContext(getProviders(), getTargetProvider(), OptimisticOptimizations.ALL, g.getProfilingInfo())); |
| return g; |
| } |
| |
| } |