test/compiler/6378821/Test6378821.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/**
 * @test
 * @bug 6378821
 * @summary where available, bitCount() should use POPC on SPARC processors and AMD+10h
 *
 * @run main/othervm -Xcomp -XX:CompileOnly=Test6378821.fcomp Test6378821
 */

public class Test6378821 {
    static final int[]  ia = new int[]  { 0x12345678 };
    static final long[] la = new long[] { 0x12345678abcdefL };

    public static void main(String [] args) {
        // Resolve the class and the method.
        Integer.bitCount(1);
        Long.bitCount(1);

        sub(ia[0]);
        sub(la[0]);
        sub(ia);
        sub(la);
    }

    static void check(int i, int expected, int result) {
        if (result != expected) {
            throw new InternalError("Wrong population count for " + i + ": " + result + " != " + expected);
        }
    }

    static void check(long l, int expected, int result) {
        if (result != expected) {
            throw new InternalError("Wrong population count for " + l + ": " + result + " != " + expected);
        }
    }

    static void sub(int i)     { check(i,     fint(i),  fcomp(i) ); }
    static void sub(int[] ia)  { check(ia[0], fint(ia), fcomp(ia)); }
    static void sub(long l)    { check(l,     fint(l),  fcomp(l) ); }
    static void sub(long[] la) { check(la[0], fint(la), fcomp(la)); }

    static int fint (int i)     { return Integer.bitCount(i); }
    static int fcomp(int i)     { return Integer.bitCount(i); }

    static int fint (int[] ia)  { return Integer.bitCount(ia[0]); }
    static int fcomp(int[] ia)  { return Integer.bitCount(ia[0]); }

    static int fint (long l)    { return Long.bitCount(l); }
    static int fcomp(long l)    { return Long.bitCount(l); }

    static int fint (long[] la) { return Long.bitCount(la[0]); }
    static int fcomp(long[] la) { return Long.bitCount(la[0]); }
}