/* * Copyright (c) 2022, 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 8281811 * @summary assert(_base == Tuple) failed: Not a Tuple after JDK-8280799 * @requires vm.gc.Shenandoah * @run main/othervm -XX:+UseShenandoahGC -XX:-BackgroundCompilation -XX:LoopMaxUnroll=1 TestBarrierAboveProj */ public class TestBarrierAboveProj { private static C objField = new C(); private static final Object[] arrayField = new Object[1000]; private static volatile int volatileField; public static void main(String[] args) { for (int i = 0; i < 20_000; i++) { test1(); test2(); } } private static float test1() { float v = 1; for (int i = 1; i < 1000; i++) { if (objField == arrayField[i]) { return v; } v *= 2; } return v; } private static float test2() { float v = 1; volatileField = 0x42; for (int i = 1; i < 1000; i++) { if (objField == arrayField[i]) { return v; } v *= 2; } return v; } private static class C { public float floatField; } }