| /* |
| * Copyright (c) 2014, 2016, 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 /test/lib / |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * |
| * @build sun.hotspot.WhiteBox |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI |
| * compiler.arguments.TestUseCountTrailingZerosInstructionOnSupportedCPU |
| */ |
| |
| package compiler.arguments; |
| |
| import jdk.test.lib.cli.CommandLineOptionTest; |
| |
| public class TestUseCountTrailingZerosInstructionOnSupportedCPU |
| extends BMISupportedCPUTest { |
| private static final String DISABLE_BMI = "-XX:-UseBMI1Instructions"; |
| |
| public TestUseCountTrailingZerosInstructionOnSupportedCPU() { |
| super("UseCountTrailingZerosInstruction", TZCNT_WARNING, "bmi1"); |
| } |
| |
| @Override |
| public void runTestCases() throws Throwable { |
| |
| super.runTestCases(); |
| |
| /* |
| Verify that option will be disabled if all BMI1 instructions |
| are explicitly disabled. VM will be launched with following options: |
| -XX:-UseBMI1Instructions -version |
| */ |
| CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "false", |
| "Option 'UseCountTrailingZerosInstruction' should have " |
| + "'false' value if all BMI1 instructions are explicitly" |
| + " disabled (-XX:-UseBMI1Instructions flag used)", |
| TestUseCountTrailingZerosInstructionOnSupportedCPU.DISABLE_BMI); |
| |
| /* |
| Verify that option could be turned on even if other BMI1 |
| instructions were turned off. VM will be launched with following |
| options: -XX:-UseBMI1Instructions |
| -XX:+UseCountTrailingZerosInstruction -version |
| */ |
| CommandLineOptionTest.verifyOptionValueForSameVM(optionName, "true", |
| "Option 'UseCountTrailingZerosInstruction' should be able to " |
| + "be turned on even if all BMI1 instructions are " |
| + "disabled (-XX:-UseBMI1Instructions flag used)", |
| TestUseCountTrailingZerosInstructionOnSupportedCPU.DISABLE_BMI, |
| CommandLineOptionTest.prepareBooleanFlag(optionName, true)); |
| } |
| |
| public static void main(String args[]) throws Throwable { |
| new TestUseCountTrailingZerosInstructionOnSupportedCPU().test(); |
| } |
| } |
| |