TestIrreducibleLoopWithVNNI.java

/*
 * Copyright (c) 2019, 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.
 *
 * 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 8230185
 * @summary assert(is_Loop()) failed: invalid node class, during OSR compilation
 * for VNNI pattern match.
 *
 * @run main/othervm -Xcomp
 *      -XX:CompileCommand=compileonly,compiler.loopopts.TestIrreducibleLoopWithVNNI::*
 *      compiler.loopopts.TestIrreducibleLoopWithVNNI
 */

package compiler.loopopts;

public class TestIrreducibleLoopWithVNNI {
    public static boolean condition = false;

    public static void main(String[] strArr) {
        TestIrreducibleLoopWithVNNI _instance = new TestIrreducibleLoopWithVNNI();
        for (int i = 0; i < 10; i++) {
            _instance.mainTest();
        }
    }

    public void mainTest() {
        int a = 1, b = 1, c = 1, d = 51;
        for (b = 0; b < 100; b++) {
            a = a + b * 342;
            for (c = 0; c < 100; c++) {
                for (d = 0; d < 1; d++)
                    a = d;
                if (condition)
                    break;
            }
            a = d * a;
        }
    }
}