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  * @summary Verify processing of UseCountTrailingZerosInstruction option
  28  *          on CPU without TZCNT instruction (BMI1 feature) support.
  29  * @library /testlibrary /../../test/lib
  30  * @modules java.base/sun.misc
  31  *          java.management
  32  * @build TestUseCountTrailingZerosInstructionOnUnsupportedCPU
  33  *        BMIUnsupportedCPUTest
  34  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  35  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI
  38  *                   TestUseCountTrailingZerosInstructionOnUnsupportedCPU
  39  */
  40 
  41 import sun.hotspot.cpuinfo.CPUInfo;
  42 import com.oracle.java.testlibrary.*;
  43 import com.oracle.java.testlibrary.cli.*;
  44 
  45 public class TestUseCountTrailingZerosInstructionOnUnsupportedCPU
  46         extends BMIUnsupportedCPUTest {
  47     private static final String ENABLE_BMI = "-XX:+UseBMI1Instructions";
  48 
  49     public TestUseCountTrailingZerosInstructionOnUnsupportedCPU() {
  50         super("UseCountTrailingZerosInstruction", TZCNT_WARNING, "bmi1");
  51     }
  52 
  53     @Override
  54     public void unsupportedX86CPUTestCases() throws Throwable {
  55 
  56         super.unsupportedX86CPUTestCases();
  57 
  58         /*
  59           Verify that option will not be turned on during UseBMI1Instructions
  60           processing. VM will be launched with following options:
  61           -XX:+UseBMI1Instructions -version
  62         */
  63         CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "false",
  64                 "Feature bmi1 is not supported on current CPU. Option "
  65                     + "UseCountTrailingZerosInstruction should have 'false'"
  66                     + " value",
  67                 TestUseCountTrailingZerosInstructionOnUnsupportedCPU.
  68                         ENABLE_BMI);
  69 
  70         /*
  71           VM will be launched with following options:
  72           -XX:+UseCountTrailingZerosInstruction -XX:+UseBMI1Instructions
  73           -version
  74         */
  75         CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "false",
  76                     "Feature bmi1 is not supported on current CPU. Option "
  77                     + "UseCountTrailingZerosInstruction should have 'false'"
  78                     + " value",
  79                 CommandLineOptionTest.prepareBooleanFlag(optionName, true),
  80                 TestUseCountTrailingZerosInstructionOnUnsupportedCPU.
  81                         ENABLE_BMI);
  82     }
  83 
  84     public static void main(String args[]) throws Throwable {
  85         new TestUseCountTrailingZerosInstructionOnUnsupportedCPU().test();
  86     }
  87 }
  88