/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/**

 * @test

 * @bug 8209639

 * @summary assert failure in coalesce.cpp: attempted to spill a non-spillable item

 *

 * @run main/othervm -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,SubsumingLoadsCauseFlagSpill::not_inlined -Xmx1024m SubsumingLoadsCauseFlagSpill

 *

 */

public class SubsumingLoadsCauseFlagSpill {

    private static Object field;

    private static boolean do_throw;

    private static volatile boolean barrier;

    public static void main(String[] args) {

        for (int i = 0; i < 20_000; i++) {

            do_throw = true;

            field = null;

            test(0);

            do_throw = false;

            field = new Object();

            test(0);

        }

    }

    private static float test(float f) {

        Object v = null;

        try {

            not_inlined();

            v = field;

        } catch (MyException me) {

            v = field;

            barrier = true;

        }

        if (v == null) {

            return f * f;

        }

        return f;

    }

    private static void not_inlined() throws MyException{

        if (do_throw) {

            throw new MyException();

        }

    }

    private static class MyException extends Throwable {

    }

}