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/*
* Copyright (C) 2012, 2014, 2015 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
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DFGMinifiedNode_h
#define DFGMinifiedNode_h
#if ENABLE(DFG_JIT)
#include "DFGCommon.h"
#include "DFGMinifiedID.h"
#include "DFGNodeType.h"
namespace JSC { namespace DFG {
struct Node;
inline bool belongsInMinifiedGraph(NodeType type)
{
switch (type) {
case JSConstant:
case Int52Constant:
case DoubleConstant:
case PhantomDirectArguments:
case PhantomClonedArguments:
return true;
default:
return false;
}
}
class MinifiedNode {
public:
MinifiedNode() { }
static MinifiedNode fromNode(Node*);
MinifiedID id() const { return m_id; }
NodeType op() const { return m_op; }
bool hasConstant() const { return hasConstant(m_op); }
JSValue constant() const
{
return JSValue::decode(bitwise_cast<EncodedJSValue>(m_info));
}
bool hasInlineCallFrame() const { return hasInlineCallFrame(m_op); }
InlineCallFrame* inlineCallFrame() const
{
return bitwise_cast<InlineCallFrame*>(static_cast<uintptr_t>(m_info));
}
static MinifiedID getID(MinifiedNode* node) { return node->id(); }
static bool compareByNodeIndex(const MinifiedNode& a, const MinifiedNode& b)
{
return a.m_id < b.m_id;
}
private:
static bool hasConstant(NodeType type)
{
return type == JSConstant || type == Int52Constant || type == DoubleConstant;
}
static bool hasInlineCallFrame(NodeType type)
{
return type == PhantomDirectArguments || type == PhantomClonedArguments;
}
MinifiedID m_id;
uint64_t m_info;
NodeType m_op;
};
} } // namespace JSC::DFG
#endif // ENABLE(DFG_JIT)
#endif // DFGMinifiedNode_h
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