VN_Cast02.java revision 12657:6ef01bd40ce2 
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 * Tests constant folding of integer operations.
31 */
32public class VN_Cast02 extends JTTTest {
33
34    private static class TestClass {
35        int field = 9;
36    }
37
38    private static boolean cond = true;
39    static final Object object = new TestClass();
40
41    public static int test(int arg) {
42        if (arg == 0) {
43            return test1();
44        }
45        if (arg == 1) {
46            return test2();
47        }
48        if (arg == 2) {
49            return test3();
50        }
51        return 0;
52    }
53
54    private static int test1() {
55        Object o = object;
56        TestClass a = (TestClass) o;
57        if (cond) {
58            TestClass b = (TestClass) o;
59            return a.field + b.field;
60        }
61        return 0;
62    }
63
64    private static int test2() {
65        Object obj = new TestClass();
66        TestClass a = (TestClass) obj;
67        if (cond) {
68            TestClass b = (TestClass) obj;
69            return a.field + b.field;
70        }
71        return 0;
72    }
73
74    @SuppressWarnings("all")
75    private static int test3() {
76        Object o = null;
77        TestClass a = (TestClass) o;
78        if (cond) {
79            TestClass b = (TestClass) o;
80            return a.field + b.field;
81        }
82        return 0;
83    }
84
85    @Test
86    public void run0() throws Throwable {
87        runTest("test", 0);
88    }
89
90    @Test
91    public void run1() throws Throwable {
92        runTest("test", 1);
93    }
94
95    @Test
96    public void run2() throws Throwable {
97        runTest("test", 2);
98    }
99
100}
101