Source/JavaScriptCore/dfg/DFGPhiChildren.cpp

/*
 * Copyright (C) 2014 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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 */

#include "config.h"
#include "DFGPhiChildren.h"

#if ENABLE(DFG_JIT)

#include "DFGGraph.h"

namespace JSC { namespace DFG {

PhiChildren::PhiChildren()
{
}

PhiChildren::PhiChildren(Graph& graph)
{
    for (BasicBlock* block : graph.blocksInNaturalOrder()) {
        for (Node* node : *block) {
            if (node->op() != Upsilon)
                continue;
            
            m_children.add(node->phi(), List()).iterator->value.append(node);
        }
    }
}

PhiChildren::~PhiChildren()
{
}

const PhiChildren::List& PhiChildren::upsilonsOf(Node* node) const
{
    ASSERT(node->op() == Phi);
    return m_children.find(node)->value;
}

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)