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comparison test/compiler/5091921/Test6753639.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 6753639
28 * @summary Strange optimisation in for loop with cyclic integer condition
29 *
30 * @run main/othervm -Xbatch Test6753639
31 */
32
33 public class Test6753639 {
34 public static void main(String[] args) throws InterruptedException {
35 int END = Integer.MAX_VALUE;
36 int count = 0;
37 for(int i = Integer.MAX_VALUE - 5; i <= END; i++) {
38 count++;
39 if (count > 100000) {
40 System.out.println("Passed");
41 System.exit(95);
42 }
43 }
44 System.out.println("broken " + count);
45 System.out.println("FAILED");
46 System.exit(97);
47 }
48 }
49
50