1 /* 2 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.jtt.optimize; 24 25 import org.junit.Test; 26 27 import org.graalvm.compiler.jtt.JTTTest; 28 29 /* 30 * Tests value numbering of instanceof operations. 31 */ 32 public class VN_InstanceOf01 extends JTTTest { 33 34 static final Object object = new DummyTestClass(); 35 36 public static boolean test(int arg) { 37 if (arg == 0) { 38 return foo1(); 39 } 40 if (arg == 1) { 41 return foo2(); 42 } 43 if (arg == 2) { 44 return foo3(); 45 } 46 // do nothing 47 return false; 48 } 49 50 private static boolean foo1() { 51 boolean a = object instanceof DummyTestClass; 52 boolean b = object instanceof DummyTestClass; 53 return a | b; 54 } 55 56 private static boolean foo2() { 57 Object obj = new DummyTestClass(); 58 boolean a = obj instanceof DummyTestClass; 59 boolean b = obj instanceof DummyTestClass; 60 return a | b; 61 } 62 63 private static boolean foo3() { 64 boolean a = null instanceof DummyTestClass; 65 boolean b = null instanceof DummyTestClass; 66 return a | b; 67 } 68 69 @Test 70 public void run0() throws Throwable { 71 runTest("test", 0); 72 } 73 74 @Test 75 public void run1() throws Throwable { 76 runTest("test", 1); 77 } 78 79 @Test 80 public void run2() throws Throwable { 81 runTest("test", 2); 82 } 83 84 }