1 /* 2 * Copyright (c) 2014, 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 BLSI instruction 30 * @library /testlibrary /testlibrary/whitebox 31 * @build TestBlsiL BMITestRunner Expr 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox 33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 34 * -XX:+WhiteBoxAPI TestBlsiL 35 */ 36 37 import sun.hotspot.cpuinfo.CPUInfo; 38 39 public class TestBlsiL { 40 41 public static void main(String args[]) throws Throwable { 42 if (!CPUInfo.hasFeature("bmi1")) { 43 System.out.println("CPU does not support bmi1 feature. " + 44 "Test skipped."); 45 return; 46 } 47 48 BMITestRunner.runTests(BlsiLExpr.class, args, 49 "-XX:+UseBMI1Instructions"); 50 BMITestRunner.runTests(BlsiLCommutativeExpr.class, args, 51 "-XX:+UseBMI1Instructions"); 52 } 53 54 public static class BlsiLExpr extends Expr.BMIUnaryLongExpr { 55 56 public long longExpr(long src) { 57 return -src & src; 58 } 59 60 public long longExpr(Expr.MemL src) { 61 return -src.value & src.value; 62 } 63 64 } 65 66 public static class BlsiLCommutativeExpr extends Expr.BMIUnaryLongExpr { 67 68 public long longExpr(long src) { 69 return src & -src; 70 } 71 72 public long longExpr(Expr.MemL src) { 73 return src.value & -src.value; 74 } 75 76 } 77 78 }