/* * Copyright (c) 2020, 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 8254998 * @summary C2: assert(!n->as_Loop()->is_transformed_long_loop()) failure with -XX:StressLongCountedLoop=1 * @requires vm.compiler2.enabled & vm.gc.Parallel * * @run main/othervm -Xcomp -XX:-TieredCompilation -XX:MaxRecursiveInlineLevel=26 -XX:MaxInlineLevel=26 -XX:LoopOptsCount=41 -XX:+UseParallelGC TestTooManyLoopOpts * */ public class TestTooManyLoopOpts { private static volatile int field; public static void main(String[] args) { test(0); } private static void test(int stop) { for (long l = 0; l < 10; l++) { test_helper(stop, 26); field = 0x42; } } private static void test_helper(int stop, int rec) { if (rec <= 0) { return; } for (int i = 0; i < stop; i++) { test_helper(stop, rec - 1); } } }