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/*
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* Copyright (c) 2015, 2018, 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.api.directives.test;
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import java.lang.annotation.ElementType;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.annotation.Target;
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import org.junit.Assert;
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import org.junit.Test;
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import org.graalvm.compiler.api.directives.GraalDirectives;
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import org.graalvm.compiler.core.test.GraalCompilerTest;
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import org.graalvm.compiler.nodes.ConstantNode;
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import org.graalvm.compiler.nodes.ReturnNode;
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import org.graalvm.compiler.nodes.StructuredGraph;
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import org.graalvm.compiler.nodes.calc.AddNode;
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import org.graalvm.compiler.nodes.calc.ConditionalNode;
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import org.graalvm.compiler.phases.OptimisticOptimizations;
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import org.graalvm.compiler.phases.OptimisticOptimizations.Optimization;
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import org.graalvm.compiler.phases.tiers.HighTierContext;
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/**
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* Tests for {@link GraalDirectives#opaque}.
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*
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* There are two snippets for each kind:
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* <ul>
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* <li>opaque<Kind>Snippet verifies that constant folding is prevented by the opaque
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* directive.
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* <li><kind>Snippet verifies that constant folding does happen if the opaque directive is not
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* there.
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* </ul>
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*
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*/
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public class OpaqueDirectiveTest extends GraalCompilerTest {
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@Retention(RetentionPolicy.RUNTIME)
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@Target(ElementType.METHOD)
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private @interface OpaqueSnippet {
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Class<?> expectedReturnNode();
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}
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@OpaqueSnippet(expectedReturnNode = ConstantNode.class)
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public static boolean booleanSnippet() {
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return 5 > 3;
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}
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@OpaqueSnippet(expectedReturnNode = ConditionalNode.class)
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public static boolean opaqueBooleanSnippet() {
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return 5 > GraalDirectives.opaque(3);
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}
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@Test
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public void testBoolean() {
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test("booleanSnippet");
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test("opaqueBooleanSnippet");
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}
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@OpaqueSnippet(expectedReturnNode = ConstantNode.class)
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public static int intSnippet() {
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return 5 + 3;
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}
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@OpaqueSnippet(expectedReturnNode = AddNode.class)
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public static int opaqueIntSnippet() {
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return 5 + GraalDirectives.opaque(3);
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}
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@Test
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public void testInt() {
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test("intSnippet");
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test("opaqueIntSnippet");
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}
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@OpaqueSnippet(expectedReturnNode = ConstantNode.class)
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public static double doubleSnippet() {
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return 5. + 3.;
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}
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@OpaqueSnippet(expectedReturnNode = AddNode.class)
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public static double opaqueDoubleSnippet() {
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return 5. + GraalDirectives.opaque(3.);
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}
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@Test
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public void testDouble() {
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test("doubleSnippet");
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test("opaqueDoubleSnippet");
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}
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private static class Dummy {
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}
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@OpaqueSnippet(expectedReturnNode = ConstantNode.class)
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public static boolean objectSnippet() {
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Object obj = new Dummy();
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return obj == null;
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}
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@OpaqueSnippet(expectedReturnNode = ConditionalNode.class)
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public static boolean opaqueObjectSnippet() {
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Object obj = new Dummy();
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return GraalDirectives.opaque(obj) == null;
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}
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@Test
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public void testObject() {
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test("objectSnippet");
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test("opaqueObjectSnippet");
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}
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@Override
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protected HighTierContext getDefaultHighTierContext() {
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return new HighTierContext(getProviders(), getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL.remove(Optimization.RemoveNeverExecutedCode));
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}
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@Override
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protected void checkLowTierGraph(StructuredGraph graph) {
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OpaqueSnippet snippet = graph.method().getAnnotation(OpaqueSnippet.class);
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for (ReturnNode returnNode : graph.getNodes(ReturnNode.TYPE)) {
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Assert.assertEquals(snippet.expectedReturnNode(), returnNode.result().getClass());
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}
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}
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}
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