/*

 * Copyright (c) 2015, Oracle and/or its affiliates. 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.

 *

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 */

/*

 * @test

 * @bug 8134031

 * @summary Bad rewiring of memory edges when we split unique types during EA

 *

 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement

 *      -XX:CompileCommand=dontinline,compiler.escapeAnalysis.TestEABadMergeMem::m_notinlined

 *      compiler.escapeAnalysis.TestEABadMergeMem

 */

package compiler.escapeAnalysis;

public class TestEABadMergeMem {

    static class Box {

        int i;

    }

    static void m_notinlined() {

    }

    static float dummy1;

    static float dummy2;

    static int test(Box a, Box c, int i, int j, int k, boolean flag1, boolean flag2) {

        Box b = new Box(); // non escaping

        a.i = i;

        b.i = j;

        c.i = k;

        m_notinlined();

        boolean flag3 = false;

        if (flag1) {

            for (int ii = 0; ii < 100; ii++) {

                if (flag2) {

                    dummy1 = (float)ii;

                } else {

                    dummy2 = (float)ii;

                }

            }

            flag3 = true;

        }

        // Memory Phi here with projection of not inlined call as one edge, MergeMem as other

        if (flag3) { // will split through Phi during loopopts

            int res = c.i + b.i;

            m_notinlined(); // prevents split through phi during igvn

            return res;

        } else {

            return 44 + 43;

        }

    }

    static public void main(String[] args) {

        for (int i = 0; i < 20000; i++) {

            // m(2);

            Box a = new Box();

            Box c = new Box();

            int res = test(a, c, 42, 43, 44, (i%2) == 0, (i%3) == 0);

            if (res != 44 + 43) {

                throw new RuntimeException("Bad result " + res);

            }

        }

    }

}