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 /** 26 * @test 27 * @bug 8031321 28 * @summary Verify that results of computations are the same w/ 29 * and w/o usage of BLSMSK instruction 30 * @library /testlibrary /test/lib 31 * @modules java.base/sun.misc 32 * java.management 33 * @build TestBlsmskI BMITestRunner Expr 34 * @run main ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI TestBlsmskI 38 */ 39 40 import sun.hotspot.cpuinfo.CPUInfo; 41 42 public class TestBlsmskI { 43 44 public static void main(String args[]) throws Throwable { 45 if (!CPUInfo.hasFeature("bmi1")) { 46 System.out.println("INFO: CPU does not support bmi1 feature."); 47 } 48 49 BMITestRunner.runTests(BlsmskIExpr.class, args, 50 "-XX:+IgnoreUnrecognizedVMOptions", 51 "-XX:+UseBMI1Instructions"); 52 BMITestRunner.runTests(BlsmskICommutativeExpr.class, args, 53 "-XX:+IgnoreUnrecognizedVMOptions", 54 "-XX:+UseBMI1Instructions"); 55 } 56 57 public static class BlsmskIExpr extends Expr.BMIUnaryIntExpr { 58 59 public int intExpr(int src) { 60 return (src - 1) ^ src; 61 } 62 63 public int intExpr(Expr.MemI src) { 64 return (src.value - 1) ^ src.value; 65 } 66 67 } 68 69 public static class BlsmskICommutativeExpr extends Expr.BMIUnaryIntExpr { 70 71 public int intExpr(int src) { 72 return src ^ (src - 1); 73 } 74 75 public int intExpr(Expr.MemI src) { 76 return src.value ^ (src.value - 1); 77 } 78 79 } 80 81 }