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comparison test/compiler/5091921/Test6186134.java @ 3345:bad7ecd0b6ed

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5091921: Sign flip issues in loop optimizer Summary: Fix integer overflow problem in the code generated by loop optimizer. Reviewed-by: never
author kvn
date Wed, 04 May 2011 13:12:42 -0700
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3344:0139aac70fb5 3345:bad7ecd0b6ed
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 6186134
28 * @summary Server virtual machine produces/exeutes incorrect code.
29 *
30 * @run main Test6186134 100000
31 */
32 import java.util.ArrayList;
33
34 public class Test6186134 {
35
36 int num = 0;
37
38 public Test6186134(int n) {
39 num = n;
40 }
41
42 public boolean more() {
43 return num-- > 0;
44 }
45
46 public ArrayList test1() {
47 ArrayList res = new ArrayList();
48 int maxResults = Integer.MAX_VALUE;
49 int n = 0;
50 boolean more = more();
51 while ((n++ < maxResults) && more) {
52 res.add(new Object());
53 more = more();
54 }
55 return res;
56 }
57
58 public static void main(String[] pars) {
59 int n = Integer.parseInt(pars[0]);
60 for (int i=0; i<n; i++) {
61 Test6186134 t = new Test6186134(10);
62 int size = t.test1().size();
63 if (size != 10) {
64 System.out.println("wrong size: " + size +", should be 10");
65 System.exit(97);
66 }
67 }
68 System.out.println("Passed");
69 }
70 }
71