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.truffle.test.nodes;
024
025import com.oracle.truffle.api.*;
026import com.oracle.truffle.api.frame.*;
027import com.oracle.truffle.api.nodes.*;
028
029@NodeInfo
030public class TwoMergesExplodedLoopTestNode extends AbstractTestNode {
031
032    static class Flag {
033        boolean flag = true;
034    }
035
036    private final int count;
037
038    public TwoMergesExplodedLoopTestNode(int count) {
039        this.count = count;
040    }
041
042    @ExplodeLoop(merge = false)
043    @Override
044    public int execute(VirtualFrame frame) {
045        Flag flag = new Flag();
046        int result = 0;
047        int i = 0;
048        while (i < count) {
049            i++;
050
051            CompilerAsserts.partialEvaluationConstant(result);
052
053            if (flag.flag) {
054                result++;
055                continue;
056            } else {
057                result--;
058                continue;
059            }
060        }
061        return result;
062    }
063}