001/*
002 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.compiler.test;
024
025import org.junit.*;
026
027/**
028 * Collection of tests for
029 * {@link com.oracle.graal.phases.common.DominatorConditionalEliminationPhase} including those that
030 * triggered bugs in this phase.
031 */
032public class ConditionalEliminationTest3 extends ConditionalEliminationTestBase {
033
034    private static final String REFERENCE_SNIPPET = "referenceSnippet";
035
036    @SuppressWarnings("all")
037    public static int referenceSnippet(int a, int b) {
038        int sum = 0;
039        outer: for (int i = 0;; ++i) {
040            if (b > 100) {
041                inner: for (int j = 0;; ++j) {
042                    ++sum;
043                    if (sum == 100) {
044                        break inner;
045                    }
046                    if (sum == 1000 && b < 1000) {
047                        break outer;
048                    }
049                }
050            }
051        }
052        return sum;
053    }
054
055    @Test
056    public void test1() {
057        testConditionalElimination("test1Snippet", REFERENCE_SNIPPET);
058    }
059
060    @SuppressWarnings("all")
061    public static int test1Snippet(int a, int b) {
062        int sum = 0;
063        outer: for (int i = 0;; ++i) {
064            if (b > 100) {
065                inner: for (int j = 0;; ++j) {
066                    ++sum;
067                    if (sum == 100) {
068                        break inner;
069                    }
070                    if (sum == 1000 && b < 1000) {
071                        break outer;
072                    }
073                }
074            }
075        }
076        if (b >= 1000) {
077            return 5;
078        }
079        return sum;
080    }
081
082    @Test
083    public void test2() {
084        testConditionalElimination("test2Snippet", REFERENCE_SNIPPET);
085    }
086
087    @SuppressWarnings("all")
088    public static int test2Snippet(int a, int b) {
089        int sum = 0;
090        outer: for (int i = 0;; ++i) {
091            if (b > 100) {
092                inner: for (int j = 0;; ++j) {
093                    ++sum;
094                    if (sum == 100) {
095                        break inner;
096                    }
097                    if (sum == 1000 && b < 1000) {
098                        break outer;
099                    }
100                }
101                if (sum != 100) {
102                    return 42;
103                }
104            }
105        }
106        return sum;
107    }
108}