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_InstanceOf02 extends JTTTest { 33 34 private static boolean cond = true; 35 36 static final Object object = new DummyTestClass(); 37 38 public static boolean test(int arg) { 39 if (arg == 0) { 40 return foo1(); 41 } 42 if (arg == 1) { 43 return foo2(); 44 } 45 if (arg == 2) { 46 return foo3(); 47 } 48 // do nothing 49 return false; 50 } 51 52 private static boolean foo1() { 53 boolean a = object instanceof DummyTestClass; 54 if (cond) { 55 boolean b = object instanceof DummyTestClass; 56 return a | b; 57 } 58 return false; 59 } 60 61 private static boolean foo2() { 62 Object obj = new DummyTestClass(); 63 boolean a = obj instanceof DummyTestClass; 64 if (cond) { 65 boolean b = obj instanceof DummyTestClass; 66 return a | b; 67 } 68 return false; 69 } 70 71 private static boolean foo3() { 72 boolean a = null instanceof DummyTestClass; 73 if (cond) { 74 boolean b = null instanceof DummyTestClass; 75 return a | b; 76 } 77 return false; 78 } 79 80 @Test 81 public void run0() throws Throwable { 82 runTest("test", 0); 83 } 84 85 @Test 86 public void run1() throws Throwable { 87 runTest("test", 1); 88 } 89 90 @Test 91 public void run2() throws Throwable { 92 runTest("test", 2); 93 } 94 95 }