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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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.

 *

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 */

/*

 * @test

 * @bug 6700100 8156760

 * @summary small instance clone as loads/stores

 * @library /

 *

 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement

 *                   -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m*

 *                   compiler.arraycopy.TestInstanceCloneAsLoadsStores

 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement

 *                   -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m*

 *                   -XX:+IgnoreUnrecognizedVMOptions -XX:+StressArrayCopyMacroNode

 *                   compiler.arraycopy.TestInstanceCloneAsLoadsStores

 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement

 *                   -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m*

 *                   -XX:+IgnoreUnrecognizedVMOptions -XX:-ReduceInitialCardMarks

 *                   compiler.arraycopy.TestInstanceCloneAsLoadsStores

 */

package compiler.arraycopy;

public class TestInstanceCloneAsLoadsStores extends TestInstanceCloneUtils {

    // Should be compiled as loads/stores

    static Object m1(D src) throws CloneNotSupportedException {

        return src.clone();

    }

    // Should be compiled as adds of src (dest allocation eliminated)

    static int m2(D src) throws CloneNotSupportedException {

        D dest = (D)src.clone();

        return dest.i1 + dest.i2 + ((int)dest.i3) + dest.i4 + dest.i5;

    }

    // Should be compiled as arraycopy stub call (object too large)

    static int m3(E src) throws CloneNotSupportedException {

        E dest = (E)src.clone();

        return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5 +

            dest.i6 + dest.i7 + dest.i8 + dest.i9;

    }

    // Need profiling on src's type to be able to know number of

    // fields. Cannot clone as loads/stores if compile doesn't use it.

    static Object m4(A src) throws CloneNotSupportedException {

        return src.clone();

    }

    // Same as above but should optimize out dest allocation

    static int m5(A src) throws CloneNotSupportedException {

        A dest = (A)src.clone();

        return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5;

    }

    // Check that if we have no fields to clone we do fine

    static Object m6(F src) throws CloneNotSupportedException {

        return src.clone();

    }

    // With virtual call to clone: clone inlined from profling which

    // gives us exact type of src so we can clone it with

    // loads/stores.

    static G m7(G src) throws CloneNotSupportedException {

        return (G)src.myclone();

    }

    // Virtual call to clone but single target: exact type unknown,

    // clone intrinsic uses profiling to determine exact type and

    // clone with loads/stores.

    static J m8(J src) throws CloneNotSupportedException {

        return (J)src.myclone();

    }

    public static void main(String[] args) throws Exception {

        TestInstanceCloneAsLoadsStores test = new TestInstanceCloneAsLoadsStores();

        test.doTest(d, "m1");

        test.doTest(d, "m2");

        test.doTest(e, "m3");

        test.doTest(a, "m4");

        test.doTest(a, "m5");

        test.doTest(f, "m6");

        test.doTest(g, "m7");

        test.doTest(k, "m8");

        if (!test.success) {

            throw new RuntimeException("some tests failed");

        }

    }

}