1 /*
 2  * Copyright (c) 2019, 2024, 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
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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
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22  */
23 
24 package compiler.valhalla.inlinetypes;
25 
26 import jdk.test.lib.Asserts;
27 
28 /**
29  * @test
30  * @bug 8234108
31  * @library /testlibrary /test/lib
32  * @summary Verify that call reresolution works for C2 compiled calls to java.lang.runtime.ValueObjectMethods::isSubstitutable0.
33  * @enablePreview
34  * @run main/othervm -XX:CompileCommand=dontinline,compiler.valhalla.inlinetypes.TestIsSubstitutableReresolution::test
35  *                   compiler.valhalla.inlinetypes.TestIsSubstitutableReresolution
36  */
37 
38 value class MyValue {
39     int x;
40 
41     public MyValue(int x) {
42         this.x = x;
43     }
44 }
45 
46 public class TestIsSubstitutableReresolution {
47 
48     static boolean test(Object obj) {
49         MyValue vt = new MyValue(42);
50         return vt == obj;
51     }
52 
53     public static void main(String[] args) throws Exception {
54         MyValue vt1 = new MyValue(42);
55         MyValue vt2 = new MyValue(43);
56         for (int i = 0; i < 1_000_000; ++i) {
57             Asserts.assertEQ(test(vt1), true);
58             Asserts.assertEQ(test(vt2), false);
59         }
60     }
61 }