1 /*
2  * Copyright (c) 2011, 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 
24 
25 package org.graalvm.compiler.core.test;
26 
27 import org.junit.Test;
28 
29 import org.graalvm.compiler.core.test.ea.EATestBase.TestClassInt;
30 
31 public class ShortCircuitNodeTest extends GraalCompilerTest {
32 
33     @Test
test1()34     public void test1() {
35         // only executeActual, to avoid creating profiling information
36         executeActual(getResolvedJavaMethod("test1Snippet"), 1, 2);
37     }
38 
39     public static final TestClassInt field = null;
40     public static TestClassInt field2 = null;
41 
42     @SuppressWarnings("unused")
test1Snippet(int a, int b)43     public static void test1Snippet(int a, int b) {
44         /*
45          * if a ShortCircuitOrNode is created for the check inside test2, then faulty handling of
46          * guards can create a cycle in the graph.
47          */
48         int v;
49         if (a == 1) {
50             if (b != 1) {
51                 int i = field.x;
52             }
53             field2 = null;
54             v = 0;
55         } else {
56             v = 1;
57         }
58 
59         if (test2(v, b)) {
60             int i = field.x;
61         }
62     }
63 
test2(int a, int b)64     public static boolean test2(int a, int b) {
65         return a != 0 || b != 1;
66     }
67 }
68