VN_Long02.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 optimization of integer operations.
31 */
32public class VN_Long02 extends JTTTest {
33
34    public static long test(int arg) {
35        if (arg == 0) {
36            return shift0(arg + 10);
37        }
38        if (arg == 1) {
39            return shift1(arg + 10);
40        }
41        if (arg == 2) {
42            return shift2(arg + 10);
43        }
44        return 0;
45    }
46
47    public static long shift0(long x) {
48        long c = 1;
49        long t = x >> c;
50        long u = x >> c;
51        return t + u;
52    }
53
54    public static long shift1(long x) {
55        long c = 1;
56        long t = x >>> c;
57        long u = x >>> c;
58        return t + u;
59    }
60
61    public static long shift2(long x) {
62        long c = 1;
63        long t = x << c;
64        long u = x << c;
65        return t + u;
66    }
67
68    @Test
69    public void run0() throws Throwable {
70        runTest("test", 0);
71    }
72
73    @Test
74    public void run1() throws Throwable {
75        runTest("test", 1);
76    }
77
78    @Test
79    public void run2() throws Throwable {
80        runTest("test", 2);
81    }
82
83}
84