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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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package org.graalvm.compiler.core.test;

import org.graalvm.compiler.nodes.StructuredGraph;

import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;

import org.graalvm.compiler.phases.common.CanonicalizerPhase;

import org.junit.Test;

public class CompareCanonicalizerTest2 extends GraalCompilerTest {

    @SuppressWarnings("unused") private static boolean sink;

    private StructuredGraph getCanonicalizedGraph(String name) {

        StructuredGraph graph = getRegularGraph(name);

        new CanonicalizerPhase().apply(graph, getProviders());

        return graph;

    }

    private StructuredGraph getRegularGraph(String name) {

        StructuredGraph graph = parseEager(name, AllowAssumptions.YES);

        return graph;

    }

    @Test

    public void test0() {

        assertEquals(getCanonicalizedGraph("integerTestCanonicalization0"), getRegularGraph("integerTestCanonicalization0"));

    }

    public static void integerTestCanonicalization0(int a) {

        sink = 1 < a + 1;

    }

    @Test

    public void test1() {

        assertEquals(getCanonicalizedGraph("integerTestCanonicalization1"), getRegularGraph("integerTestCanonicalization1"));

    }

    public static void integerTestCanonicalization1(int a) {

        sink = a - 1 < -1;

    }

    @Test

    public void test2() {

        assertEquals(getCanonicalizedGraph("integerTestCanonicalization2a"), getCanonicalizedGraph("integerTestCanonicalization2Reference"));

        assertEquals(getCanonicalizedGraph("integerTestCanonicalization2b"), getCanonicalizedGraph("integerTestCanonicalization2Reference"));

    }

    public static boolean integerTestCanonicalization2a(Object[] arr) {

        return arr.length - 1 < 0;

    }

    public static boolean integerTestCanonicalization2b(Object[] arr) {

        return arr.length < 1;

    }

    public static boolean integerTestCanonicalization2Reference(Object[] arr) {

        return arr.length == 0;

    }

    @Test

    public void test3() {

        assertEquals(getCanonicalizedGraph("integerTestCanonicalization3"), getCanonicalizedGraph("integerTestCanonicalization3Reference"));

    }

    public static boolean integerTestCanonicalization3(Object[] arr) {

        return ((long) (arr.length - 1)) - 1 < 0;

    }

    public static boolean integerTestCanonicalization3Reference(Object[] arr) {

        return arr.length < 2;

    }

}