/*

 * Copyright (c) 2015, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package org.graalvm.compiler.core.test;

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

import org.junit.Ignore;

import org.junit.Test;

/**

 * Collection of tests for {@link org.graalvm.compiler.phases.common.ConditionalEliminationPhase}

 * including those that triggered bugs in this phase.

 */

public class ConditionalEliminationTest11 extends ConditionalEliminationTestBase {

    @SuppressWarnings("all")

    public static int referenceSnippet(int a) {

        if ((a & 15) != 15) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return 0;

    }

    @Test

    public void test1() {

        testConditionalElimination("test1Snippet", "referenceSnippet");

    }

    @SuppressWarnings("all")

    public static int test1Snippet(int a) {

        if ((a & 8) != 8) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 15) != 15) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return 0;

    }

    @SuppressWarnings("all")

    public static int test2Snippet(int a) {

        if ((a & 8) == 0) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 15) != 15) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return 0;

    }

    @Test

    public void test2() {

        testConditionalElimination("test2Snippet", "referenceSnippet");

    }

    @SuppressWarnings("all")

    public static int test3Snippet(int a) {

        if ((a & 15) != 15) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 8) != 8) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return 0;

    }

    @Test

    public void test3() {

        // Test forward elimination of bitwise tests

        testConditionalElimination("test3Snippet", "referenceSnippet");

    }

    @SuppressWarnings("all")

    public static int test4Snippet(int a) {

        if ((a & 15) != 15) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 8) == 0) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return 0;

    }

    @Test

    public void test4() {

        // Test forward elimination of bitwise tests

        testConditionalElimination("test4Snippet", "referenceSnippet");

    }

    public static int test5Snippet(int a) {

        if ((a & 5) == 5) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 7) != 0) {

            return 0;

        }

        return 1;

    }

    @Test

    public void test5() {

        // Shouldn't be possible to optimize this

        testConditionalElimination("test5Snippet", "test5Snippet");

    }

    public static int test6Snippet(int a) {

        if ((a & 8) != 0) {

        }

        if ((a & 15) != 15) {

        }

        return 0;

    }

    public static int reference6Snippet(int a) {

        if ((a & 8) != 0) {

        }

        return 0;

    }

    @Test

    public void test6() {

        testConditionalElimination("test6Snippet", "reference6Snippet");

    }

    public static int test7Snippet(int a) {

        if ((a & 15) == 15) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 8) == 8) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return a;

    }

    public static int reference7Snippet(int a) {

        if ((a & 8) == 8) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return a;

    }

    @Test

    public void test7() {

        testConditionalElimination("test7Snippet", "reference7Snippet");

    }

    public static int test8Snippet(int a) {

        if ((a & 16) == 16) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 8) != 8) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 44) != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return a;

    }

    public static int reference8Snippet(int a) {

        if ((a & 60) != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return a;

    }

    @Ignore("requires merging of bit tests")

    @Test

    public void test8() {

        testConditionalElimination("test8Snippet", "reference8Snippet");

    }

    public static int test9Snippet(int a) {

        if ((a & 16) == 16) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 8) != 8) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 44) != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if (a != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return a;

    }

    public static int reference9Snippet(int a) {

        if (a != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return a;

    }

    @Test

    public void test9() {

        testConditionalElimination("test9Snippet", "reference9Snippet");

    }

    static class ByteHolder {

        public byte b;

        byte byteValue() {

            return b;

        }

    }

    public static int test10Snippet(ByteHolder b) {

        int v = b.byteValue();

        long a = v & 0xffffffff;

        if (v != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 16) == 16) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 8) != 8) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 44) != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return v;

    }

    public static int reference10Snippet(ByteHolder b) {

        byte v = b.byteValue();

        if (v != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return v;

    }

    @Test

    @Ignore

    public void test10() {

        testConditionalElimination("test10Snippet", "reference10Snippet");

    }

    public static int test11Snippet(ByteHolder b) {

        int v = b.byteValue();

        long a = v & 0xffffffff;

        if ((a & 16) == 16) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 8) != 8) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if ((a & 44) != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        if (v != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return v;

    }

    public static int reference11Snippet(ByteHolder b) {

        byte v = b.byteValue();

        if (v != 44) {

            GraalDirectives.deoptimizeAndInvalidate();

        }

        return v;

    }

    @Test

    @Ignore

    public void test11() {

        testConditionalElimination("test11Snippet", "reference11Snippet");

    }

}