/* * Copyright (c) 2014, 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 * @summary Verify that results of computations are the same w/ * and w/o usage of BLSMSK instruction * @library /testlibrary /testlibrary/whitebox * @build TestBlsmskL BMITestRunner Expr * @run main ClassFileInstaller sun.hotspot.WhiteBox * sun.hotspot.WhiteBox$WhiteBoxPermission * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions * -XX:+WhiteBoxAPI TestBlsmskL */ import sun.hotspot.cpuinfo.CPUInfo; public class TestBlsmskL { public static void main(String args[]) throws Throwable { if (!CPUInfo.hasFeature("bmi1")) { System.out.println("INFO: CPU does not support bmi1 feature."); } BMITestRunner.runTests(BlsmskLExpr.class, args, "-XX:+IgnoreUnrecognizedVMOptions", "-XX:+UseBMI1Instructions"); BMITestRunner.runTests(BlsmskLCommutativeExpr.class, args, "-XX:+IgnoreUnrecognizedVMOptions", "-XX:+UseBMI1Instructions"); } public static class BlsmskLExpr extends Expr.BMIUnaryLongExpr { public long longExpr(long src) { return (src - 1) ^ src; } public long longExpr(Expr.MemL src) { return (src.value - 1) ^ src.value; } } public static class BlsmskLCommutativeExpr extends Expr.BMIUnaryLongExpr { public long longExpr(long src) { return src ^ (src - 1); } public long longExpr(Expr.MemL src) { return src.value ^ (src.value - 1); } } }