|
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 8196296 |
|
27 * @summary Bad graph when unrolled loop bounds conflicts with range checks |
|
28 * |
|
29 * @run main/othervm -XX:-BackgroundCompilation -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=0 TestStripMinedBackToBackIfs |
|
30 * |
|
31 */ |
|
32 |
|
33 |
|
34 public class TestStripMinedBackToBackIfs { |
|
35 public static void main(String[] args) { |
|
36 for (int i = 0; i < 20_000; i++) { |
|
37 test(100); |
|
38 } |
|
39 } |
|
40 |
|
41 private static double test(int limit) { |
|
42 double v = 1; |
|
43 for (int i = 0; i < limit; i++) { |
|
44 v = v * 4; |
|
45 // We don't want this test to be merged with identical |
|
46 // loop end test |
|
47 if (i+1 < limit) { |
|
48 v = v * 2; |
|
49 } |
|
50 } |
|
51 return v; |
|
52 } |
|
53 } |