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