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 

    24 /*

    25  * @test

    26  * @bug 8031321

    27  * @library /testlibrary /testlibrary/whitebox /compiler/whitebox ..

    28  * @build LZcntTestI

    29  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    30  * @run main/othervm -Xbootclasspath/a:. -Xbatch -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI

    31  *                   -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCountLeadingZerosInstruction LZcntTestI

    32  */

    33 

    34 import java.lang.reflect.Method;

    35 

    36 public class LZcntTestI extends BmiIntrinsicBase.BmiTestCase {

    37 

    38     protected LZcntTestI(Method method) {

    39         super(method);

    40         instrMask = new byte[]{(byte) 0xFF, (byte) 0xFF, (byte) 0xFF};

    41         instrPattern = new byte[]{(byte) 0xF3, (byte) 0x0F, (byte) 0xBD};

    42     }

    43 

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

    45         // j.l.Integer and Long should be loaded to allow a compilation of the methods that use their methods

    46         System.out.println("class java.lang.Integer should be loaded. Proof: " + Integer.class);

    47         BmiIntrinsicBase.verifyTestCase(LZcntTestI::new, TestLzcntI.LzcntIExpr.class.getDeclaredMethods());

    48     }

    49 

    50     @Override

    51     protected String getVMFlag() {

    52         return "UseCountLeadingZerosInstruction";

    53     }

    54 

    55     @Override

    56     protected String getCpuFlag() {

    57         return "lzcnt";

    58     }

    59 }