1 /*
   2  * Copyright (c) 2014, 2015, 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  * @requires vm.flavor == "server"
  28  * @library /test/lib /
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  *
  32  * @build sun.hotspot.WhiteBox
  33  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  34  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run main/othervm -Xbootclasspath/a:. -Xbatch -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  36  *      -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCountLeadingZerosInstruction
  37  *      compiler.intrinsics.bmi.verifycode.LZcntTestI
  38  */
  39 
  40 package compiler.intrinsics.bmi.verifycode;
  41 
  42 import compiler.intrinsics.bmi.TestLzcntI;
  43 
  44 import java.lang.reflect.Method;
  45 
  46 public class LZcntTestI extends BmiIntrinsicBase.BmiTestCase_x64 {
  47 
  48     protected LZcntTestI(Method method) {
  49         super(method);
  50         instrMask = new byte[]{(byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
  51         instrPattern = new byte[]{(byte) 0xF3, (byte) 0x0F, (byte) 0xBD};
  52 
  53         instrMask_x64 = new byte[]{(byte) 0xFF, (byte) 0x00, (byte) 0xFF, (byte) 0xFF};
  54         instrPattern_x64 = new byte[]{(byte) 0xF3, (byte) 0x00, (byte) 0x0F, (byte) 0xBD};
  55     }
  56 
  57     public static void main(String[] args) throws Exception {
  58         // j.l.Integer and Long should be loaded to allow a compilation of the methods that use their methods
  59         System.out.println("class java.lang.Integer should be loaded. Proof: " + Integer.class);
  60         // Avoid uncommon traps.
  61         System.out.println("Num leading zeroes: " + new TestLzcntI.LzcntIExpr().intExpr(12341341));
  62         BmiIntrinsicBase.verifyTestCase(LZcntTestI::new, TestLzcntI.LzcntIExpr.class.getDeclaredMethods());
  63     }
  64 
  65     @Override
  66     protected String getVMFlag() {
  67         return "UseCountLeadingZerosInstruction";
  68     }
  69 
  70     @Override
  71     protected String getCpuFlag() {
  72         return "lzcnt";
  73     }
  74 }