/*

 * Copyright (c) 2012, 2013, 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

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 */

/*

 * @test

 * @bug 8005419

 * @summary Improve intrinsics code performance on x86 by using AVX2

 *

 * @run main/othervm -Xbatch -Xmx64m compiler.intrinsics.Test8005419

 */

package compiler.intrinsics;

public class Test8005419 {

    public static int SIZE = 64;

    public static void main(String[] args) {

        char[] a = new char[SIZE];

        char[] b = new char[SIZE];

        for (int i = 16; i < SIZE; i++) {

          a[i] = (char)i;

          b[i] = (char)i;

        }

        String s1 = new String(a);

        String s2 = new String(b);

        // Warm up

        boolean failed = false;

        int result = 0;

        for (int i = 0; i < 10000; i++) {

          result += test(s1, s2);

        }

        for (int i = 0; i < 10000; i++) {

          result += test(s1, s2);

        }

        for (int i = 0; i < 10000; i++) {

          result += test(s1, s2);

        }

        if (result != 0) failed = true;

        System.out.println("Start testing");

        // Compare same string

        result = test(s1, s1);

        if (result != 0) {

          failed = true;

          System.out.println("Failed same: result = " + result + ", expected 0");

        }

        // Compare equal strings

        for (int i = 1; i <= SIZE; i++) {

          s1 = new String(a, 0, i);

          s2 = new String(b, 0, i);

          result = test(s1, s2);

          if (result != 0) {

            failed = true;

            System.out.println("Failed equals s1[" + i + "], s2[" + i + "]: result = " + result + ", expected 0");

          }

        }

        // Compare equal strings but different sizes

        for (int i = 1; i <= SIZE; i++) {

          s1 = new String(a, 0, i);

          for (int j = 1; j <= SIZE; j++) {

            s2 = new String(b, 0, j);

            result = test(s1, s2);

            if (result != (i-j)) {

              failed = true;

              System.out.println("Failed diff size s1[" + i + "], s2[" + j + "]: result = " + result + ", expected " + (i-j));

            }

          }

        }

        // Compare strings with one char different and different sizes

        for (int i = 1; i <= SIZE; i++) {

          s1 = new String(a, 0, i);

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

            b[j] -= 3; // change char

            s2 = new String(b, 0, i);

            result = test(s1, s2);

            int chdiff = a[j] - b[j];

            if (result != chdiff) {

              failed = true;

              System.out.println("Failed diff char s1[" + i + "], s2[" + i + "]: result = " + result + ", expected " + chdiff);

            }

            result = test(s2, s1);

            chdiff = b[j] - a[j];

            if (result != chdiff) {

              failed = true;

              System.out.println("Failed diff char s2[" + i + "], s1[" + i + "]: result = " + result + ", expected " + chdiff);

            }

            b[j] += 3; // restore

          }

        }

        if (failed) {

          System.out.println("FAILED");

          System.exit(97);

        }

        System.out.println("PASSED");

    }

    private static int test(String str1, String str2) {

        return str1.compareTo(str2);

    }

}