/*

 * Copyright (c) 2018, Arm Limited. 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.aarch64.test;

import org.graalvm.compiler.lir.LIRInstruction;

import org.graalvm.compiler.lir.aarch64.AArch64ControlFlow;

import org.junit.Test;

import java.util.function.Predicate;

public class AArch64CbzTest extends AArch64MatchRuleTest {

    private static final Predicate<LIRInstruction> predicate = op -> (op instanceof AArch64ControlFlow.CompareBranchZeroOp);

    public static int equalsTo(int x) {

        if (x == 0) {

            return 1;

        } else {

            return x - 1;

        }

    }

    public static int notEqualsTo(int x) {

        if (x != 0) {

            return x + 2;

        } else {

            return 3;

        }

    }

    public static String isNull(String s) {

        if (s == null) {

            return "abc";

        } else {

            return s + "abc";

        }

    }

    public static String isNotNull(String s) {

        if (s != null) {

            return s + "abc";

        } else {

            return "abc";

        }

    }

    public static String objectEquals(String s1, String s2) {

        if (s1.equals(s2)) {

            return s1 + "abc";

        } else {

            return s2 + "abd";

        }

    }

    @Test

    public void testEqualsTo() {

        test("equalsTo", 0);

        test("equalsTo", 1);

        checkLIR("equalsTo", predicate, 1);

    }

    @Test

    public void testNotEqualsTo() {

        test("notEqualsTo", 0);

        test("notEqualsTo", 1);

        checkLIR("notEqualsTo", predicate, 1);

    }

    @Test

    public void testIsNull() {

        test("isNull", new Object[]{null});

        test("isNull", "abc");

        checkLIR("isNull", predicate, 1);

    }

    @Test

    public void testIsNotNull() {

        test("isNotNull", new Object[]{null});

        test("isNotNull", "abc");

        checkLIR("isNotNull", predicate, 1);

    }

    @Test

    public void testObjectEquals() {

        test("objectEquals", "ab", "ac");

        test("objectEquals", "abc", "abc");

        checkLIR("objectEquals", predicate, 0);

    }

}