jdk8-mips64-public/hotspot: test/compiler/6800154/Test6800154.java@fb9d124d9192

     1 /*

     2  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    24 /**

    25  * @test

    26  * @bug 6800154

    27  * @summary Add comments to long_by_long_mulhi() for better understandability

    28  *

    29  * @run main/othervm -Xcomp -XX:CompileOnly=Test6800154.divcomp Test6800154

    30  */

    32 import java.net.URLClassLoader;

    34 public class Test6800154 implements Runnable {

    35     static final long[] DIVIDENDS = {

    36         0,

    37         1,

    38         2,

    39         1423487,

    40         4444441,

    41         4918923241323L,

    42         -1,

    43         -24351,

    44         0x3333,

    45         0x0000000080000000L,

    46         0x7fffffffffffffffL,

    47         0x8000000000000000L

    48     };

    50     static final long[] DIVISORS = {

    51         1,

    52         2,

    53         17,

    54         12342,

    55         24123,

    56         143444,

    57         123444442344L,

    58         -1,

    59         -2,

    60         -4423423234231423L,

    61         0x0000000080000000L,

    62         0x7fffffffffffffffL,

    63         0x8000000000000000L

    64     };

    66     // Initialize DIVISOR so that it is final in this class.

    67     static final long DIVISOR;

    69     static {

    70         long value = 0;

    71         try {

    72             value = Long.decode(System.getProperty("divisor"));

    73         } catch (Throwable e) {

    74         }

    75         DIVISOR = value;

    76     }

    78     public static void main(String[] args) throws Exception

    79     {

    80         Class cl = Class.forName("Test6800154");

    81         URLClassLoader apploader = (URLClassLoader) cl.getClassLoader();

    83         // Iterate over all divisors.

    84         for (int i = 0; i < DIVISORS.length; i++) {

    85             System.setProperty("divisor", "" + DIVISORS[i]);

    86             ClassLoader loader = new URLClassLoader(apploader.getURLs(), apploader.getParent());

    87             Class c = loader.loadClass("Test6800154");

    88             Runnable r = (Runnable) c.newInstance();

    89             r.run();

    90         }

    91     }

    93     public void run()

    94     {

    95         // Iterate over all dividends.

    96         for (int i = 0; i < DIVIDENDS.length; i++) {

    97             long dividend = DIVIDENDS[i];

    99             long expected = divint(dividend);

   100             long result = divcomp(dividend);

   102             if (result != expected)

   103                 throw new InternalError(dividend + " / " + DIVISOR + " failed: " + result + " != " + expected);

   104         }

   105     }

   107     static long divint(long a)  { return a / DIVISOR; }

   108     static long divcomp(long a) { return a / DIVISOR; }

   109 }

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