1 /*
   2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 8209687
  27  * @summary Verify that Parse::optimize_cmp_with_klass() works with value types.
  28  * @library /test/lib
  29  * @compile -XDemitQtypes -XDenableValueTypes TestOptimizeKlassCmp.java
  30  * @run main/othervm -XX:+EnableValhalla -Xbatch
  31  *                   compiler.valhalla.valuetypes.TestOptimizeKlassCmp
  32  */
  33 
  34 package compiler.valhalla.valuetypes;
  35 
  36 import jdk.test.lib.Asserts;
  37 
  38 value class MyValue {
  39     public final int x;
  40 
  41     public MyValue(int x) {
  42         this.x = x;
  43     }
  44 }
  45 
  46 public class TestOptimizeKlassCmp {
  47 
  48     public static boolean test1(MyValue v1, MyValue v2) {
  49         return v1.equals(v2);
  50     }
  51 
  52     public static boolean test2(MyValue v1, MyValue v2) {
  53         return v1.getClass().equals(v2.getClass());
  54     }
  55 
  56     public static boolean test3(Object o1, Object o2) {
  57         return o1.getClass().equals(o2.getClass());
  58     }
  59 
  60     public static void main(String[] args) {
  61         MyValue v1 = new MyValue(0);
  62         MyValue v2 = new MyValue(1);
  63         for (int i = 0; i < 10_000; ++i) {
  64             Asserts.assertFalse(test1(v1, v2));
  65             Asserts.assertTrue(test1(v1, v1));
  66             Asserts.assertTrue(test2(v1, v2));
  67             Asserts.assertTrue(test2(v1, v1));
  68             Asserts.assertTrue(test3(v1, v2));
  69             Asserts.assertTrue(test3(v1, v1));
  70         }
  71     }
  72 }