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