/* * Copyright (c) 2019, 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. */ /** * @test * @bug 8209687 * @summary Verify that Parse::optimize_cmp_with_klass() works with value types. * @library /test/lib * @compile -XDemitQtypes -XDenableValueTypes TestOptimizeKlassCmp.java * @run main/othervm -XX:+EnableValhalla -Xbatch * compiler.valhalla.valuetypes.TestOptimizeKlassCmp */ package compiler.valhalla.valuetypes; import jdk.test.lib.Asserts; value class MyValue { public final int x; public MyValue(int x) { this.x = x; } } public class TestOptimizeKlassCmp { public static boolean test1(MyValue v1, MyValue v2) { return v1.equals(v2); } public static boolean test2(MyValue v1, MyValue v2) { return v1.getClass().equals(v2.getClass()); } public static boolean test3(Object o1, Object o2) { return o1.getClass().equals(o2.getClass()); } public static void main(String[] args) { MyValue v1 = new MyValue(0); MyValue v2 = new MyValue(1); for (int i = 0; i < 10_000; ++i) { Asserts.assertFalse(test1(v1, v2)); Asserts.assertTrue(test1(v1, v1)); Asserts.assertTrue(test2(v1, v2)); Asserts.assertTrue(test2(v1, v1)); Asserts.assertTrue(test3(v1, v2)); Asserts.assertTrue(test3(v1, v1)); } } }