StoreMovedBeforeInfiniteLoop.java

/*
 * 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
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 * questions.
 */

/**
 * @test
 * @bug 8197563
 * @summary assert(is_Loop()) crash in PhaseIdealLoop::try_move_store_before_loop()
 *
 * @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=StoreMovedBeforeInfiniteLoop::test  StoreMovedBeforeInfiniteLoop
 *
 */

public class StoreMovedBeforeInfiniteLoop {
    public static void main(String[] args) {
        field = -1;
        test(new Object());
    }

    static int field;

    static int constant() {
        return 65;
    }

    private static int test(Object o) {
        do {
            if (field <= 0) {
                return -109;
            }
            do {
                field = 4;
            } while (constant() >= 0);
        } while (o == null);
        return -109;
    }
}