#ifndef DFGFlushedAt_h
#define DFGFlushedAt_h
#if ENABLE(DFG_JIT)
#include "DFGFlushFormat.h"
#include "VirtualRegister.h"
namespace JSC { namespace DFG {
class FlushedAt {
public:
FlushedAt()
: m_format(DeadFlush)
{
}
explicit FlushedAt(FlushFormat format)
: m_format(format)
{
ASSERT(format == DeadFlush || format == ConflictingFlush);
}
FlushedAt(FlushFormat format, VirtualRegister virtualRegister)
: m_format(format)
, m_virtualRegister(virtualRegister)
{
if (format == DeadFlush)
ASSERT(!virtualRegister.isValid());
else
ASSERT(virtualRegister.isValid());
}
bool operator!() const { return m_format == DeadFlush; }
FlushFormat format() const { return m_format; }
VirtualRegister virtualRegister() const { return m_virtualRegister; }
bool operator==(const FlushedAt& other) const
{
return m_format == other.m_format
&& m_virtualRegister == other.m_virtualRegister;
}
bool operator!=(const FlushedAt& other) const { return !(*this == other); }
FlushedAt merge(const FlushedAt& other) const
{
if (!*this)
return other;
if (!other)
return *this;
if (*this == other)
return *this;
return FlushedAt(ConflictingFlush);
}
void dump(PrintStream&) const;
void dumpInContext(PrintStream&, DumpContext*) const;
private:
FlushFormat m_format;
VirtualRegister m_virtualRegister;
};
} }
#endif // ENABLE(DFG_JIT)
#endif // DFGFlushedAt_h