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