#ifndef DFGMinifiedNode_h
#define DFGMinifiedNode_h
#include <wtf/Platform.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 WeakJSConstant:
case ValueToInt32:
case Int32ToDouble:
case ForwardInt32ToDouble:
case UInt32ToNumber:
case DoubleAsInt32:
case PhantomArguments:
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 hasChild1() const { return hasChild(m_op); }
MinifiedID child1() const
{
ASSERT(hasChild(m_op));
return MinifiedID::fromBits(m_childOrInfo);
}
bool hasConstant() const { return hasConstantNumber() || hasWeakConstant(); }
bool hasConstantNumber() const { return hasConstantNumber(m_op); }
unsigned constantNumber() const
{
ASSERT(hasConstantNumber(m_op));
return m_childOrInfo;
}
bool hasWeakConstant() const { return hasWeakConstant(m_op); }
JSCell* weakConstant() const
{
ASSERT(hasWeakConstant(m_op));
return bitwise_cast<JSCell*>(m_childOrInfo);
}
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 hasChild(NodeType type)
{
switch (type) {
case ValueToInt32:
case Int32ToDouble:
case ForwardInt32ToDouble:
case UInt32ToNumber:
case DoubleAsInt32:
return true;
default:
return false;
}
}
static bool hasConstantNumber(NodeType type)
{
return type == JSConstant;
}
static bool hasWeakConstant(NodeType type)
{
return type == WeakJSConstant;
}
MinifiedID m_id;
uintptr_t m_childOrInfo; NodeType m_op;
};
} }
#endif // ENABLE(DFG_JIT)
#endif // DFGMinifiedNode_h