jdk8-mips64-public/hotspot: test/compiler/intrinsics/bmi/TestLzcntL.java@f90c822e73f8

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

     1 /*

     2  * Copyright (c) 2014, 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  *

    23  */

    25 /**

    26  * @test

    27  * @bug 8031321

    28  * @summary Verify that results of computations are the same w/

    29  *          and w/o usage of intrinsic

    30  * @library /testlibrary /testlibrary/whitebox

    31  * @build TestLzcntL BMITestRunner Expr

    32  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    33  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    34  *                   -XX:+WhiteBoxAPI TestLzcntL

    35  */

    37 import sun.hotspot.cpuinfo.CPUInfo;

    39 public class TestLzcntL {

    41     public static void main(String args[]) throws Throwable {

    42         if (!CPUInfo.hasFeature("lzcnt")) {

    43             System.out.println("CPU does not support lzcnt feature. " +

    44                                "Test skipped.");

    45             return;

    46         }

    48         BMITestRunner.runTests(LzcntLExpr.class, args,

    49                                "-XX:+UseCountLeadingZerosInstruction");

    50     }

    52     public static class LzcntLExpr extends Expr.BitCountingLongExpr {

    54         public long longExpr(long src) {

    55             return Long.numberOfLeadingZeros(src);

    56         }

    58     }

    60 }

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