| /* |
| * Copyright (c) 2014, 2015, 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 |
| * @requires vm.flavor == "server" |
| * @library /testlibrary /test/lib / |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * |
| * @build compiler.intrinsics.bmi.verifycode.LZcntTestI |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -Xbatch -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI |
| * -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCountLeadingZerosInstruction |
| * compiler.intrinsics.bmi.verifycode.LZcntTestI |
| */ |
| |
| package compiler.intrinsics.bmi.verifycode; |
| |
| import compiler.intrinsics.bmi.TestLzcntI; |
| |
| import java.lang.reflect.Method; |
| |
| public class LZcntTestI extends BmiIntrinsicBase.BmiTestCase_x64 { |
| |
| protected LZcntTestI(Method method) { |
| super(method); |
| instrMask = new byte[]{(byte) 0xFF, (byte) 0xFF, (byte) 0xFF}; |
| instrPattern = new byte[]{(byte) 0xF3, (byte) 0x0F, (byte) 0xBD}; |
| |
| instrMask_x64 = new byte[]{(byte) 0xFF, (byte) 0x00, (byte) 0xFF, (byte) 0xFF}; |
| instrPattern_x64 = new byte[]{(byte) 0xF3, (byte) 0x00, (byte) 0x0F, (byte) 0xBD}; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| // j.l.Integer and Long should be loaded to allow a compilation of the methods that use their methods |
| System.out.println("class java.lang.Integer should be loaded. Proof: " + Integer.class); |
| // Avoid uncommon traps. |
| System.out.println("Num leading zeroes: " + new TestLzcntI.LzcntIExpr().intExpr(12341341)); |
| BmiIntrinsicBase.verifyTestCase(LZcntTestI::new, TestLzcntI.LzcntIExpr.class.getDeclaredMethods()); |
| } |
| |
| @Override |
| protected String getVMFlag() { |
| return "UseCountLeadingZerosInstruction"; |
| } |
| |
| @Override |
| protected String getCpuFlag() { |
| return "lzcnt"; |
| } |
| } |