1 /*
2  * Copyright (c) 2018, Red Hat, Inc. 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 8209639
27  * @summary assert failure in coalesce.cpp: attempted to spill a non-spillable item
28  *
29  * @run main/othervm -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,SubsumingLoadsCauseFlagSpill::not_inlined -Xmx1024m SubsumingLoadsCauseFlagSpill
30  *
31  */
32 
33 public class SubsumingLoadsCauseFlagSpill {
34     private static Object field;
35     private static boolean do_throw;
36     private static volatile boolean barrier;
37 
main(String[] args)38     public static void main(String[] args) {
39         for (int i = 0; i < 20_000; i++) {
40             do_throw = true;
41             field = null;
42             test(0);
43             do_throw = false;
44             field = new Object();
45             test(0);
46         }
47     }
48 
test(float f)49     private static float test(float f) {
50         Object v = null;
51         try {
52             not_inlined();
53             v = field;
54         } catch (MyException me) {
55             v = field;
56             barrier = true;
57         }
58         if (v == null) {
59             return f * f;
60         }
61         return f;
62     }
63 
not_inlined()64     private static void not_inlined() throws MyException{
65         if (do_throw) {
66             throw new MyException();
67         }
68     }
69 
70     private static class MyException extends Throwable {
71     }
72 }
73