de67e52949
BitCount() should use POPC on SPARC processors where POPC is implemented directly in hardware. Reviewed-by: kvn, never
76 lines
2.8 KiB
Java
76 lines
2.8 KiB
Java
/*
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* Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/**
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* @test
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* @bug 6378821
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* @summary where available, bitCount() should use POPC on SPARC processors and AMD+10h
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*
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* @run main/othervm -Xcomp -XX:CompileOnly=Test6378821.fcomp Test6378821
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*/
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public class Test6378821 {
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static final int[] ia = new int[] { 0x12345678 };
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static final long[] la = new long[] { 0x12345678abcdefL };
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public static void main(String [] args) {
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// Resolve the class and the method.
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Integer.bitCount(1);
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Long.bitCount(1);
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sub(ia[0]);
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sub(la[0]);
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sub(ia);
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sub(la);
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}
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static void check(int i, int expected, int result) {
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if (result != expected) {
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throw new InternalError("Wrong population count for " + i + ": " + result + " != " + expected);
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}
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}
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static void check(long l, int expected, int result) {
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if (result != expected) {
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throw new InternalError("Wrong population count for " + l + ": " + result + " != " + expected);
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}
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}
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static void sub(int i) { check(i, fint(i), fcomp(i) ); }
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static void sub(int[] ia) { check(ia[0], fint(ia), fcomp(ia)); }
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static void sub(long l) { check(l, fint(l), fcomp(l) ); }
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static void sub(long[] la) { check(la[0], fint(la), fcomp(la)); }
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static int fint (int i) { return Integer.bitCount(i); }
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static int fcomp(int i) { return Integer.bitCount(i); }
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static int fint (int[] ia) { return Integer.bitCount(ia[0]); }
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static int fcomp(int[] ia) { return Integer.bitCount(ia[0]); }
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static int fint (long l) { return Long.bitCount(l); }
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static int fcomp(long l) { return Long.bitCount(l); }
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static int fint (long[] la) { return Long.bitCount(la[0]); }
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static int fcomp(long[] la) { return Long.bitCount(la[0]); }
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}
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