| /* |
| * Copyright (c) 2018, 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.jtt.optimize; |
| |
| import org.graalvm.compiler.jtt.JTTTest; |
| import org.graalvm.compiler.nodes.LogicNode; |
| import org.graalvm.compiler.nodes.java.InstanceOfNode; |
| import org.junit.Test; |
| |
| /** |
| * A few tests of expected simplifications by {@link InstanceOfNode#implies(boolean, LogicNode)}. |
| */ |
| public class InstanceOf extends JTTTest { |
| |
| static class A { |
| } |
| |
| static class B extends A { |
| } |
| |
| static class C extends B { |
| } |
| |
| public boolean testSnippet1(Object o) { |
| if (o instanceof B) { |
| if (o instanceof A) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public boolean testSnippet2(Object o) { |
| if (o instanceof A) { |
| return true; |
| } else { |
| return o instanceof B; |
| } |
| } |
| |
| @Test |
| public void test1() { |
| runTest("testSnippet1", new A()); |
| runTest("testSnippet1", new B()); |
| runTest("testSnippet1", new C()); |
| } |
| |
| @Test |
| public void test2() { |
| runTest("testSnippet2", new A()); |
| runTest("testSnippet2", new B()); |
| runTest("testSnippet2", new C()); |
| } |
| } |