/*

 * 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.

 *

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package org.graalvm.compiler.core.test;

import static org.graalvm.compiler.graph.test.matchers.NodeIterableIsEmpty.isEmpty;

import static org.junit.Assert.assertThat;

import org.graalvm.compiler.graph.iterators.NodeIterable;

import org.graalvm.compiler.nodes.StructuredGraph;

import org.graalvm.compiler.nodes.java.NewArrayNode;

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

import org.junit.Test;

public class UnusedArray extends GraalCompilerTest {

    @SuppressWarnings("unused")

    public void smallArray() {

        byte[] array = new byte[3];

    }

    @SuppressWarnings("unused")

    public void largeArray() {

        byte[] array = new byte[10 * 1024 * 1024];

    }

    @SuppressWarnings("unused")

    public void unknownArray(int l) {

        byte[] array = new byte[l];

    }

    @Test

    public void testSmall() {

        test("smallArray");

    }

    @Test

    public void testLarge() {

        test("largeArray");

    }

    @Test

    public void testUnknown() {

        test("unknownArray");

    }

    public void test(String method) {

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

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

        NodeIterable<NewArrayNode> newArrayNodes = graph.getNodes().filter(NewArrayNode.class);

        assertThat(newArrayNodes, isEmpty());

    }

}