1/*
2 * Copyright (c) 2015, 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 8074676
27 * @summary after guards in Arrays.copyOf() intrinsic, control may become top
28 *
29 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
30 *                   compiler.arraycopy.TestArrayCopyOfStopped
31 */
32
33package compiler.arraycopy;
34
35import java.util.Arrays;
36
37public class TestArrayCopyOfStopped {
38    static class A {
39    }
40
41    static class B {
42    }
43
44    static final B[] array_of_bs = new B[10];
45    static final A[] array_of_as = new A[10];
46
47    static Object[] m1_helper(Object[] array, boolean flag) {
48        if (flag) {
49            return Arrays.copyOf(array, 10, A[].class);
50        }
51        return null;
52    }
53
54    static Object[] m1(boolean flag) {
55        return m1_helper(array_of_bs, flag);
56    }
57
58    public static void main(String[] args) {
59        for (int i = 0; i < 20000; i++) {
60            m1_helper(array_of_as, (i%2) == 0);
61        }
62
63        for (int i = 0; i < 20000; i++) {
64            m1(false);
65        }
66    }
67}
68