/*
 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. 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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 */


package org.graalvm.compiler.core.test;

import org.graalvm.compiler.api.directives.GraalDirectives;
import org.junit.Test;

public class ConditionalEliminationTest12 extends ConditionalEliminationTestBase {

    static class A {

    }

    static class B extends A {

    }

    static class C extends B {

    }

    static class D extends C {

    }

    @SuppressWarnings({"static-method", "unused"})
    private int referenceMethod(Object a) {
        if (a instanceof A) {
            if (a instanceof C) {
                return 1;
            } else {
                GraalDirectives.deoptimizeAndInvalidate();
            }
        }
        return 0;
    }

    @SuppressWarnings({"static-method", "unused"})
    private int testMethod(Object a) {
        if (a instanceof A) {
            if (a instanceof C) {
                if (a instanceof B) {
                    B b = (B) a;
                    if (b instanceof C) {
                        return 1;
                    } else {
                        GraalDirectives.deoptimizeAndInvalidate();
                    }
                }
            } else {
                GraalDirectives.deoptimizeAndInvalidate();
            }
        }
        return 0;
    }

    @SuppressWarnings("unused")
    @Test
    public void testFloatingGuards() {
        // Make sure class D is loaded.
        D d = new D();
        testConditionalElimination("testMethod", "referenceMethod");
    }
}