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 * @requires vm.flavor == "server" 28 * @library /test/lib / 29 * @modules java.base/jdk.internal.misc 30 * java.management 31 * 32 * @build sun.hotspot.WhiteBox 33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 34 * sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -Xbatch -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 36 * -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCountLeadingZerosInstruction 37 * compiler.intrinsics.bmi.verifycode.LZcntTestI 38 */ 39 40 package compiler.intrinsics.bmi.verifycode; 41 42 import compiler.intrinsics.bmi.TestLzcntI; 43 44 import java.lang.reflect.Method; 45 46 public class LZcntTestI extends BmiIntrinsicBase.BmiTestCase_x64 { 47 48 protected LZcntTestI(Method method) { 49 super(method); 50 instrMask = new byte[]{(byte) 0xFF, (byte) 0xFF, (byte) 0xFF}; 51 instrPattern = new byte[]{(byte) 0xF3, (byte) 0x0F, (byte) 0xBD}; 52 53 instrMask_x64 = new byte[]{(byte) 0xFF, (byte) 0x00, (byte) 0xFF, (byte) 0xFF}; 54 instrPattern_x64 = new byte[]{(byte) 0xF3, (byte) 0x00, (byte) 0x0F, (byte) 0xBD}; 55 } 56 57 public static void main(String[] args) throws Exception { 58 // j.l.Integer and Long should be loaded to allow a compilation of the methods that use their methods 59 System.out.println("class java.lang.Integer should be loaded. Proof: " + Integer.class); 60 // Avoid uncommon traps. 61 System.out.println("Num leading zeroes: " + new TestLzcntI.LzcntIExpr().intExpr(12341341)); 62 BmiIntrinsicBase.verifyTestCase(LZcntTestI::new, TestLzcntI.LzcntIExpr.class.getDeclaredMethods()); 63 } 64 65 @Override 66 protected String getVMFlag() { 67 return "UseCountLeadingZerosInstruction"; 68 } 69 70 @Override 71 protected String getCpuFlag() { 72 return "lzcnt"; 73 } 74 }