| /* |
| * Copyright (c) 2018, Red Hat, Inc. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 8193597 |
| * @summary limit test is shared with out of loop if |
| * |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-BackgroundCompilation -XX:LoopUnrollLimit=0 -XX:+UseCountedLoopSafepoints -XX:LoopStripMiningIter=1000 LimitSharedwithOutOfLoopTest |
| * |
| */ |
| |
| public class LimitSharedwithOutOfLoopTest { |
| public static void main(String[] args) { |
| boolean[] array1 = new boolean[2001]; |
| boolean[] array2 = new boolean[2001]; |
| boolean[] array3 = new boolean[2001]; |
| array2[1000] = true; |
| array3[2000] = true; |
| for (int i = 0; i < 20_000; i++) { |
| if (test(2000, array1)) { |
| throw new RuntimeException("bad return"); |
| } |
| if (!test(2000, array2)) { |
| throw new RuntimeException("bad return"); |
| } |
| if (test(2000, array3)) { |
| throw new RuntimeException("bad return"); |
| } |
| } |
| } |
| |
| static volatile boolean barrier; |
| |
| private static boolean test(int limit, boolean[] array) { |
| for (int i = 0; i < limit;) { |
| i++; |
| if (array[i]) { |
| // Same test as end of loop test. When loop is strip |
| // mined, this must not become the end of inner loop |
| // test. |
| if (i < limit) { |
| return true; |
| } |
| return false; |
| } |
| barrier = true; |
| } |
| return false; |
| } |
| } |
