ConditionalEliminationTest7.java revision 12968:4d8a004e5c6d 
1/*
2 * Copyright (c) 2015, 2015, 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.core.test;
24
25import org.junit.Ignore;
26import org.junit.Test;
27
28/**
29 * Collection of tests for
30 * {@link org.graalvm.compiler.phases.common.DominatorConditionalEliminationPhase} including those
31 * that triggered bugs in this phase.
32 */
33@Ignore
34public class ConditionalEliminationTest7 extends ConditionalEliminationTestBase {
35
36    @SuppressWarnings("all")
37    public static int test1Snippet(int a, Object b) {
38        int sum = 0;
39        for (int j = 0;; ++j) {
40            ++sum;
41            if (b instanceof String) {
42                if (sum == 100) {
43                    break;
44                }
45            }
46        }
47        String s = (String) b;
48        return s.length() + sum;
49    }
50
51    @Test
52    public void test1() {
53        // One loop exit is skipped.
54        testProxies("test1Snippet", 1);
55    }
56
57    @SuppressWarnings("all")
58    public static int test2Snippet(int a, Object b) {
59        int sum = 0;
60        for (int j = 0;; ++j) {
61            ++sum;
62            if (b instanceof String) {
63                break;
64            }
65        }
66        String s = (String) b;
67        return s.length() + sum;
68    }
69
70    @Test
71    public void test2() {
72        // The loop exit is the anchor => no proxy necessary.
73        testProxies("test2Snippet", 0);
74    }
75
76    @SuppressWarnings("all")
77    public static int test3Snippet(int a, Object b) {
78        int sum = a;
79        outer: while (true) {
80            sum++;
81            while (sum++ != 20) {
82                while (sum++ != 30) {
83                    while (sum++ != 40) {
84                        while (sum++ != 50) {
85                            if (b instanceof String) {
86                                break outer;
87                            }
88                        }
89                    }
90                }
91            }
92        }
93        String s = (String) b;
94        return s.length() + sum;
95    }
96
97    @Test
98    public void test3() {
99        // The break skips over 4 other loops.
100        testProxies("test3Snippet", 4);
101    }
102}
103