diff -r 9ee010450e84 -r cf8164854fda test/hotspot/jtreg/compiler/loopstripmining/LoadDependsOnIfIdenticalToLoopExit.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/hotspot/jtreg/compiler/loopstripmining/LoadDependsOnIfIdenticalToLoopExit.java Wed Sep 04 16:39:12 2019 +0200 @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2019, 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 8229450 + * @summary shared an identical bool node with a strip-mined loop + * + * @run main/othervm -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:LoopMaxUnroll=0 -XX:CompileCommand=dontinline,LoadDependsOnIfIdenticalToLoopExit::not_inlined -XX:CompileCommand=compileonly,LoadDependsOnIfIdenticalToLoopExit::test1 LoadDependsOnIfIdenticalToLoopExit + * + */ + +public class LoadDependsOnIfIdenticalToLoopExit { + public static void main(String[] args) { + for (int i = 0; i < 20_000; i++) { + test1(false, false); + test1(true, true); + } + } + + private static int test1(boolean flag1, boolean flag2) { + int res = 1; + int[] array = new int[10]; + not_inlined(array); + int i; + for (i = 0; i < 2000; i++) { + res *= i; + } + + if (flag1) { + if (flag2) { + res++; + } + } + + if (i >= 2000) { + res *= array[0]; + } + return res; + } + + private static void not_inlined(int[] array) { + } +}