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