/*

 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

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

 *

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

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

 * published by the Free Software Foundation.

 *

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

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

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

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

 * accompanied this code).

 *

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

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

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

 *

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 */

/**

 * @test

 * @bug 8031321

 * @summary Verify processing of UseCountTrailingZerosInstruction option

 *          on CPU without TZCNT instruction (BMI1 feature) support.

 * @library /testlibrary /testlibrary/whitebox

 * @build TestUseCountTrailingZerosInstructionOnUnsupportedCPU

 *        BMIUnsupportedCPUTest

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

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

 *                   -XX:+WhiteBoxAPI

 *                   TestUseCountTrailingZerosInstructionOnUnsupportedCPU

 */

import sun.hotspot.cpuinfo.CPUInfo;

import com.oracle.java.testlibrary.*;

import com.oracle.java.testlibrary.cli.*;

public class TestUseCountTrailingZerosInstructionOnUnsupportedCPU

        extends BMIUnsupportedCPUTest {

    private static final String ENABLE_BMI = "-XX:+UseBMI1Instructions";

    public TestUseCountTrailingZerosInstructionOnUnsupportedCPU() {

        super("UseCountTrailingZerosInstruction", TZCNT_WARNING, "bmi1");

    }

    @Override

    public void unsupportedX86CPUTestCases() throws Throwable {

        super.unsupportedX86CPUTestCases();

        /*

          Verify that option will not be turned on during UseBMI1Instructions

          processing. VM will be launched with following options:

          -XX:+UseBMI1Instructions -version

        */

        CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "false",

                TestUseCountTrailingZerosInstructionOnUnsupportedCPU.

                        ENABLE_BMI);

        /*

          VM will be launched with following options:

          -XX:+UseCountTrailingZerosInstruction -XX:+UseBMI1Instructions

          -version

        */

        CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "false",

                CommandLineOptionTest.prepareBooleanFlag(optionName, true),

                TestUseCountTrailingZerosInstructionOnUnsupportedCPU.

                        ENABLE_BMI);

    }

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

        new TestUseCountTrailingZerosInstructionOnUnsupportedCPU().test();

    }

}