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 * Copyright (C) 2011 Apple Inc. All rights reserved.
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#ifndef DFGArithNodeFlagsInferencePhase_h
#define DFGArithNodeFlagsInferencePhase_h

#include <wtf/Platform.h>

#if ENABLE(DFG_JIT)

namespace JSC { namespace DFG {

class Graph;

// Determine which arithmetic nodes' results are only used in a context that
// truncates to integer anyway. This is great for optimizing away checks for
// overflow and negative zero. NB the way this phase integrates into the rest
// of the DFG makes it non-optional. Instead of proving that a node is only
// used in integer context, it actually does the opposite: finds nodes that
// are used in non-integer contexts. Hence failing to run this phase will make
// the compiler assume that all nodes are just used as integers!

void performArithNodeFlagsInference(Graph&);

} } // namespace JSC::DFG::Phase

#endif // ENABLE(DFG_JIT)

#endif // DFGArithNodeFlagsInferencePhase_h