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 */ 31 public class NCE_FlowSensitive03 extends JTTTest { 32 33 public static String test(String arg) { 34 if ("x".equals(arg)) { 35 if (arg == null) { 36 return "null"; 37 } 38 } else { 39 if (arg == null) { 40 return "null"; 41 } 42 } 43 // arg cannot be null here 44 return arg.toString(); 45 } 46 47 @Test 48 public void run0() throws Throwable { 49 runTest("test", (Object) null); 50 } 51 52 @Test 53 public void run1() throws Throwable { 54 runTest("test", "x"); 55 } 56 57 @Test 58 public void run2() throws Throwable { 59 runTest("test", "yay"); 60 } 61 62 }