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78 lines
2.5 KiB
78 lines
2.5 KiB
/* |
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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/** |
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* @test |
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* @bug 8031321 |
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* @summary Verify that results of computations are the same w/ |
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* and w/o usage of BLSR instruction |
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* @library /testlibrary /testlibrary/whitebox |
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* @build TestBlsrL BMITestRunner Expr |
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* @run main ClassFileInstaller sun.hotspot.WhiteBox |
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
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* -XX:+WhiteBoxAPI TestBlsrL |
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*/ |
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import sun.hotspot.cpuinfo.CPUInfo; |
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public class TestBlsrL { |
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public static void main(String args[]) throws Throwable { |
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if (!CPUInfo.hasFeature("bmi1")) { |
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System.out.println("CPU does not support bmi1 feature. " + |
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"Test skipped."); |
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return; |
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} |
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BMITestRunner.runTests(BlsrLExpr.class, args, |
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"-XX:+UseBMI1Instructions"); |
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BMITestRunner.runTests(BlsrLCommutativeExpr.class, args, |
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"-XX:+UseBMI1Instructions"); |
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} |
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public static class BlsrLExpr extends Expr.BMIUnaryLongExpr { |
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public long longExpr(long src) { |
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return (src - 1) & src; |
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} |
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public long longExpr(Expr.MemL src) { |
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return (src.value - 1) & src.value; |
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} |
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} |
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public static class BlsrLCommutativeExpr extends Expr.BMIUnaryLongExpr { |
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public long longExpr(long src) { |
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return src & (src - 1); |
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} |
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public long longExpr(Expr.MemL src) { |
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return src.value & (src.value - 1); |
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} |
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} |
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}
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