NCE_FlowSensitive03.java revision 12651:6ef01bd40ce2 
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 */
23package org.graalvm.compiler.jtt.optimize;
24
25import org.junit.Test;
26
27import org.graalvm.compiler.jtt.JTTTest;
28
29/*
30 */
31public 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}
63