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/*
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 8031321
* @summary Verify processing of UseCountTrailingZerosInstruction option
* on CPU with TZCNT (BMI1 feature) support.
* @library /testlibrary /testlibrary/whitebox
* @build TestUseCountTrailingZerosInstructionOnSupportedCPU
* BMISupportedCPUTest
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI
* TestUseCountTrailingZerosInstructionOnSupportedCPU
*/
import sun.hotspot.cpuinfo.CPUInfo;
import com.oracle.java.testlibrary.*;
import com.oracle.java.testlibrary.cli.*;
public class TestUseCountTrailingZerosInstructionOnSupportedCPU
extends BMISupportedCPUTest {
public TestUseCountTrailingZerosInstructionOnSupportedCPU() {
super("UseCountTrailingZerosInstruction", TZCNT_WARNING, "bmi1");
}
@Override
public void runTestCases() throws Throwable {
super.runTestCases();
// verify that option will be disabled if all BMI1 instuctions
// are explicitly disabled
CommandLineOptionTest.
verifyOptionValue("UseCountTrailingZerosInstruction", "false",
"-XX:-UseBMI1Instructions");
// verify that option could be turned on even if other BMI1
// instructions were turned off
CommandLineOptionTest.
verifyOptionValue("UseCountTrailingZerosInstruction", "true",
"-XX:-UseBMI1Instructions",
"-XX:+UseCountTrailingZerosInstruction");
}
public static void main(String args[]) throws Throwable {
new TestUseCountTrailingZerosInstructionOnSupportedCPU().test();
}
}
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