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comparison test/compiler/6877254/Test.java @ 985:685e959d09ea

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6877254: Server vm crashes with no branches off of store slice" when run with CMS and UseSuperWord(default) Summary: design StoreCMNode::Ideal to promote its oopStore input if the input is a MergeMem node Reviewed-by: kvn, never
author cfang
date Mon, 14 Sep 2009 09:49:54 -0700
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children 648fe315b257
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958:c7e94e8fff43 985:685e959d09ea
1 /*
2 * Copyright 2009 Sun Microsystems, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24 /**
25 * @test
26 * @bug 6877254
27 * @summary Implement StoreCMNode::Ideal to promote its OopStore above the MergeMem
28 *
29 * @run main/othervm -server -Xcomp -XX:+UseConcMarkSweepGC Test
30 */
31
32 public class Test {
33 static byte var_1;
34 static String var_2 = "";
35 static byte var_3;
36 static float var_4 = 0;
37
38 public static void main(String[] args) {
39 int i = 0;
40
41 for (String var_tmp = var_2; i < 11; var_1 = 0, i++) {
42 var_2 = var_2;
43 var_4 *= (var_4 *= (var_3 = 0));
44 }
45
46 System.out.println("var_1 = " + var_1);
47 System.out.println("var_2 = " + var_2);
48 System.out.println("var_3 = " + var_3);
49 System.out.println("var_4 = " + var_4);
50 }
51 }