Mercurial > hg > truffle
comparison test/compiler/7046096/Test7046096.java @ 3788:e3cbc9ddd434
7044738: Loop unroll optimization causes incorrect result
Summary: take into account memory dependencies when clonning nodes in clone_up_backedge_goo().
Reviewed-by: never
author | kvn |
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date | Tue, 28 Jun 2011 15:24:29 -0700 |
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3787:6ae7a1561b53 | 3788:e3cbc9ddd434 |
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1 /* | |
2 * Copyright (c) 2011, 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 /** | |
26 * @test | |
27 * @bug 7046096 | |
28 * @summary SEGV IN C2 WITH 6U25 | |
29 * | |
30 * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+OptimizeStringConcat Test7046096 | |
31 */ | |
32 | |
33 | |
34 public class Test7046096 { | |
35 | |
36 static int first = 1; | |
37 | |
38 String add(String str) { | |
39 if (first != 0) { | |
40 return str + "789"; | |
41 } else { | |
42 return "null"; | |
43 } | |
44 } | |
45 | |
46 String test(String str) { | |
47 for (int i=0; i < first; i++) { | |
48 if (i > 1) | |
49 return "bad"; | |
50 } | |
51 return add(str+"456"); | |
52 } | |
53 | |
54 public static void main(String [] args) { | |
55 Test7046096 t = new Test7046096(); | |
56 for (int i = 0; i < 11000; i++) { | |
57 String str = t.test("123"); | |
58 if (!str.equals("123456789")) { | |
59 System.out.println("FAILED: " + str + " != \"123456789\""); | |
60 System.exit(97); | |
61 } | |
62 } | |
63 } | |
64 } | |
65 |