88 lines
3.5 KiB
Java
88 lines
3.5 KiB
Java
/*
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* Copyright (c) 2014, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8031321
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* @summary Verify processing of UseCountTrailingZerosInstruction option
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* on CPU with TZCNT (BMI1 feature) support.
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* @library /test/lib /
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* @requires vm.flagless
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* @modules java.base/jdk.internal.misc
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* java.management
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*
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
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* -XX:+WhiteBoxAPI
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* compiler.arguments.TestUseCountTrailingZerosInstructionOnSupportedCPU
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*/
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package compiler.arguments;
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import jdk.test.lib.cli.CommandLineOptionTest;
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public class TestUseCountTrailingZerosInstructionOnSupportedCPU
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extends BMISupportedCPUTest {
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private static final String DISABLE_BMI = "-XX:-UseBMI1Instructions";
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public TestUseCountTrailingZerosInstructionOnSupportedCPU() {
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super("UseCountTrailingZerosInstruction", TZCNT_WARNING, "bmi1");
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}
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@Override
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public void runTestCases() throws Throwable {
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super.runTestCases();
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/*
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Verify that option will be disabled if all BMI1 instructions
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are explicitly disabled. VM will be launched with following options:
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-XX:-UseBMI1Instructions -version
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*/
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CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "false",
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"Option 'UseCountTrailingZerosInstruction' should have "
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+ "'false' value if all BMI1 instructions are explicitly"
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+ " disabled (-XX:-UseBMI1Instructions flag used)",
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TestUseCountTrailingZerosInstructionOnSupportedCPU.DISABLE_BMI);
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/*
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Verify that option could be turned on even if other BMI1
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instructions were turned off. VM will be launched with following
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options: -XX:-UseBMI1Instructions
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-XX:+UseCountTrailingZerosInstruction -version
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*/
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CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "true",
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"Option 'UseCountTrailingZerosInstruction' should be able to "
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+ "be turned on even if all BMI1 instructions are "
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+ "disabled (-XX:-UseBMI1Instructions flag used)",
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TestUseCountTrailingZerosInstructionOnSupportedCPU.DISABLE_BMI,
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CommandLineOptionTest.prepareBooleanFlag(optionName, true));
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}
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public static void main(String args[]) throws Throwable {
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new TestUseCountTrailingZerosInstructionOnSupportedCPU().test();
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}
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}
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