/*

 * Copyright (c) 1997, 2008, 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 6663621

 * @summary JVM crashes while trying to execute api/java_security/Signature/SignatureTests.html#initSign tests.

 *

 * @run main compiler.c2.IVTest

 */

package compiler.c2;

public class IVTest {

    static int paddedSize;

    static void padV15(byte[] padded) {

        int psSize = padded.length;

        int k = 0;

        while (psSize-- > 0) {

            padded[k++] = (byte)0xff;

        }

    }

    static void padV15_2(int paddedSize) {

        byte[] padded = new byte[paddedSize];

        int psSize = padded.length;

        int k = 0;

        while (psSize-- > 0) {

            padded[k++] = (byte)0xff;

        }

    }

    static void padV15_3() {

        byte[] padded = new byte[paddedSize];

        int psSize = padded.length;

        int k = 0;

        while (psSize-- > 0) {

            padded[k++] = (byte)0xff;

        }

    }

    static void padV15_4() {

        byte[] padded = new byte[paddedSize];

        int psSize = padded.length;

        for (int k = 0;psSize > 0; psSize--) {

            int i = padded.length - psSize;

            padded[i] = (byte)0xff;

        }

    }

    static void padV15_5() {

        byte[] padded = new byte[paddedSize];

        int psSize = padded.length;

        int k = psSize - 1;

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

            padded[k--] = (byte)0xff;

        }

    }

    public static void main(String argv[]) {

        int bounds = 1024;

        int lim = 500000;

        long start = System.currentTimeMillis();

        for (int j = 0; j < lim; j++) {

            paddedSize = j % bounds;

            padV15(new byte[paddedSize]);

        }

        long end = System.currentTimeMillis();

        System.out.println(end - start);

        start = System.currentTimeMillis();

        for (int j = 0; j < lim; j++) {

            paddedSize = j % bounds;

            padV15_2(paddedSize);

        }

        end = System.currentTimeMillis();

        System.out.println(end - start);

        start = System.currentTimeMillis();

        for (int j = 0; j < lim; j++) {

            paddedSize = j % bounds;

            padV15_3();

        }

        end = System.currentTimeMillis();

        System.out.println(end - start);

        start = System.currentTimeMillis();

        for (int j = 0; j < lim; j++) {

            paddedSize = j % bounds;

            padV15_4();

        }

        end = System.currentTimeMillis();

        System.out.println(end - start);

        start = System.currentTimeMillis();

        for (int j = 0; j < lim; j++) {

            paddedSize = j % bounds;

            padV15_5();

        }

        end = System.currentTimeMillis();

        System.out.println(end - start);

    }

}