1/*
2 * Copyright (c) 2010, 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 6973329
27 * @summary C2 with Zero based COOP produces code with broken anti-dependency on x86
28 *
29 * @run main/othervm -Xbatch -Xcomp
30 *    -XX:CompileCommand=compileonly,compiler.c2.Test6973329::*
31 *    compiler.c2.Test6973329
32 */
33
34package compiler.c2;
35
36public class Test6973329 {
37    static class A {
38        A next;
39        int n;
40
41        public int get_n() {
42            return n + 1;
43        }
44    }
45
46    A a;
47
48    void test(A new_next) {
49        A prev_next = a.next;
50        a.next = new_next;
51        if (prev_next == null) {
52            a.n = a.get_n();
53        }
54    }
55
56    public static void main(String args[]) {
57        Test6973329 t = new Test6973329();
58        t.a = new A();
59        t.a.n = 1;
60        t.test(new A());
61        if (t.a.n != 2) {
62            System.out.println("Wrong value: " + t.a.n + " expected: 2");
63            System.exit(97);
64        }
65    }
66}
67
68