jdk

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/*
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 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 8005419
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 * @summary Improve intrinsics code performance on x86 by using AVX2
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 *
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 * @run main/othervm -Xbatch -Xmx128m compiler.intrinsics.Test8005419
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 */
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package compiler.intrinsics;
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public class Test8005419 {
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    public static int SIZE = 64;
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    public static void main(String[] args) {
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        char[] a = new char[SIZE];
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        char[] b = new char[SIZE];
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        for (int i = 16; i < SIZE; i++) {
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          a[i] = (char)i;
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          b[i] = (char)i;
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        }
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        String s1 = new String(a);
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        String s2 = new String(b);
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        // Warm up
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        boolean failed = false;
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        int result = 0;
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        for (int i = 0; i < 10000; i++) {
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          result += test(s1, s2);
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        }
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        for (int i = 0; i < 10000; i++) {
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          result += test(s1, s2);
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        }
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        for (int i = 0; i < 10000; i++) {
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          result += test(s1, s2);
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        }
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        if (result != 0) failed = true;
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        System.out.println("Start testing");
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        // Compare same string
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        result = test(s1, s1);
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        if (result != 0) {
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          failed = true;
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          System.out.println("Failed same: result = " + result + ", expected 0");
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        }
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        // Compare equal strings
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        for (int i = 1; i <= SIZE; i++) {
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          s1 = new String(a, 0, i);
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          s2 = new String(b, 0, i);
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          result = test(s1, s2);
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          if (result != 0) {
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            failed = true;
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            System.out.println("Failed equals s1[" + i + "], s2[" + i + "]: result = " + result + ", expected 0");
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          }
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        }
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        // Compare equal strings but different sizes
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        for (int i = 1; i <= SIZE; i++) {
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          s1 = new String(a, 0, i);
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          for (int j = 1; j <= SIZE; j++) {
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            s2 = new String(b, 0, j);
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            result = test(s1, s2);
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            if (result != (i-j)) {
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              failed = true;
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              System.out.println("Failed diff size s1[" + i + "], s2[" + j + "]: result = " + result + ", expected " + (i-j));
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            }
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          }
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        }
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        // Compare strings with one char different and different sizes
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        for (int i = 1; i <= SIZE; i++) {
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          s1 = new String(a, 0, i);
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          for (int j = 0; j < i; j++) {
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            b[j] -= 3; // change char
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            s2 = new String(b, 0, i);
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            result = test(s1, s2);
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            int chdiff = a[j] - b[j];
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            if (result != chdiff) {
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              failed = true;
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              System.out.println("Failed diff char s1[" + i + "], s2[" + i + "]: result = " + result + ", expected " + chdiff);
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            }
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            result = test(s2, s1);
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            chdiff = b[j] - a[j];
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            if (result != chdiff) {
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              failed = true;
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              System.out.println("Failed diff char s2[" + i + "], s1[" + i + "]: result = " + result + ", expected " + chdiff);
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            }
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            b[j] += 3; // restore
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          }
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        }
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        if (failed) {
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          System.out.println("FAILED");
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          System.exit(97);
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        }
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        System.out.println("PASSED");
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    }
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    private static int test(String str1, String str2) {
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        return str1.compareTo(str2);
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    }
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}
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