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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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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 8330247
 * @summary Check that Reduce Allocation Merges doesn't try to reduce non-exact allocations.
 * @library /test/lib /
 * @modules java.base/jdk.internal.misc
 * @requires vm.debug & vm.flagless & vm.compiler2.enabled & vm.opt.final.EliminateAllocations
 * @run main/othervm -XX:CompileCommand=compileonly,*TestReduceAllocationAndNonExactAllocate*::test
 *                   -XX:CompileCommand=compileonly,*::allocateInstance
 *                   -XX:CompileCommand=dontinline,*TestReduceAllocationAndNonExactAllocate*::*
 *                   -XX:+UnlockDiagnosticVMOptions
 *                   -XX:+TraceReduceAllocationMerges
 *                   -XX:-TieredCompilation
 *                   -Xbatch
 *                   -Xcomp
 *                   compiler.c2.TestReduceAllocationAndNonExactAllocate
 */

package compiler.c2;

import jdk.internal.misc.Unsafe;

public class TestReduceAllocationAndNonExactAllocate {
    private static final Unsafe UNSAFE = Unsafe.getUnsafe();

    public static void main(String[] args) {
        try {
            if (test(20, Integer.class) != 2032) {
                throw new RuntimeException("Expected the value to be 2032.");
            }
        }
        catch (InstantiationException e) {
            e.printStackTrace();
        }
    }

    public static int test(int val, Class<?> c) throws InstantiationException {
        Object p = null;

        if (val == 20) {
            p = UNSAFE.allocateInstance(c);
        }

        dummy();
        return p != null ? 2032 : 3242;
    }

    static int dummy() { return 42; }
}