src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/UnusedArray.java
author dlong
Thu, 31 Oct 2019 16:54:16 -0700
changeset 58877 aec7bf35d6f5
parent 58299 6df94ce3ab2f
permissions -rw-r--r--
8233273: Update Graal Reviewed-by: kvn
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/*
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 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package org.graalvm.compiler.core.test;
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import static org.graalvm.compiler.graph.test.matchers.NodeIterableIsEmpty.isEmpty;
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import static org.junit.Assert.assertThat;
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import org.graalvm.compiler.graph.iterators.NodeIterable;
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import org.graalvm.compiler.nodes.StructuredGraph;
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import org.graalvm.compiler.nodes.java.NewArrayNode;
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import org.junit.Test;
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public class UnusedArray extends GraalCompilerTest {
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    @SuppressWarnings("unused")
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    public void smallArray() {
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        byte[] array = new byte[3];
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    }
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    @SuppressWarnings("unused")
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    public void largeArray() {
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        byte[] array = new byte[10 * 1024 * 1024];
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    }
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    @SuppressWarnings("unused")
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    public void unknownArray(int l) {
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        byte[] array = new byte[l];
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    }
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    @Test
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    public void testSmall() {
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        test("smallArray");
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    }
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    @Test
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    public void testLarge() {
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        test("largeArray");
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    }
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    @Test
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    public void testUnknown() {
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        test("unknownArray");
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    }
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    public void test(String method) {
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        StructuredGraph graph = parseEager(method, StructuredGraph.AllowAssumptions.YES);
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        createCanonicalizerPhase().apply(graph, getProviders());
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        NodeIterable<NewArrayNode> newArrayNodes = graph.getNodes().filter(NewArrayNode.class);
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        assertThat(newArrayNodes, isEmpty());
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    }
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}