/*

 * Copyright (c) 2012 SAP SE. 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

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 */

/**

 * @test

 * @bug 8005033

 * @summary On sparcv9, C2's intrinsic for Integer.bitCount(OV) returns wrong result if OV is the result of an operation with int overflow.

 *

 * @run main/othervm -Xcomp

 *      -XX:CompileCommand=compileony,compiler.codegen.Test8005033::testBitCount

 *      compiler.codegen.Test8005033

 * @author Richard Reingruber richard DOT reingruber AT sap DOT com

 */

package compiler.codegen;

public class Test8005033 {

    public static int MINUS_ONE = -1;

    public static void main(String[] args) {

        System.out.println("EXECUTING test.");

        Integer.bitCount(1);   // load class

        int expectedBitCount = 0;

        int calculatedBitCount = testBitCount();

        if (expectedBitCount != calculatedBitCount) {

            throw new InternalError("got " + calculatedBitCount + " but expected " + expectedBitCount);

        }

        System.out.println("SUCCESSFULLY passed test.");

    }

    // testBitCount will be compiled using the Integer.bitCount() intrinsic if possible

    private static int testBitCount() {

        return Integer.bitCount(MINUS_ONE+1);   // -1 + 1 => int overflow

    }

}