FloatingReads.java revision 12651:6ef01bd40ce2 
1/*
2 * Copyright (c) 2012, 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.micro;
24
25import org.junit.Test;
26
27import org.graalvm.compiler.jtt.JTTTest;
28
29public class FloatingReads extends JTTTest {
30
31    public static long init = Runtime.getRuntime().totalMemory();
32    private final int f = 10;
33    private int a;
34    private int b;
35    private int c;
36
37    public int test(int d) {
38        a = 3;
39        b = 5;
40        c = 7;
41        for (int i = 0; i < d; i++) {
42            if (i % 2 == 0) {
43                a += b;
44            }
45            if (i % 4 == 0) {
46                b += c;
47            } else if (i % 3 == 0) {
48                b -= a;
49            }
50            if (i % 5 == 0) {
51                for (int j = 0; j < i; j++) {
52                    c += a;
53                }
54                a -= f;
55            }
56            b = a ^ c;
57            if (i % 6 == 0) {
58                c--;
59            } else if (i % 7 == 0) {
60                Runtime.getRuntime().totalMemory();
61            }
62        }
63        return a + b + c;
64    }
65
66    @Test
67    public void run0() {
68        runTest("test", 10);
69    }
70
71    @Test
72    public void run1() {
73        runTest("test", 1000);
74    }
75
76    @Test
77    public void run2() {
78        runTest("test", 1);
79    }
80
81    @Test
82    public void run3() {
83        runTest("test", 0);
84    }
85}
86