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#ifndef DFGLiveCatchVariablePreservationPhase_h
#define DFGLiveCatchVariablePreservationPhase_h

#if ENABLE(DFG_JIT)

namespace JSC { namespace DFG {

class Graph;

// This phase ensures that we maintain liveness for locals
// that are live in the "catch" block. Because a "catch"
// block will not be in the control flow graph, we need to ensure
// anything live inside the "catch" block in bytecode will maintain 
// liveness inside the "try" block for an OSR exit from the "try" 
// block into the "catch" block in the case of an exception being thrown.
//
// The mechanism currently used to demonstrate liveness to OSR exit
// is ensuring all variables live in a "catch" are flushed to the
// stack inside the "try" block.

bool performLiveCatchVariablePreservationPhase(Graph&);

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)

#endif // DFGLiveCatchVariablePreservationPhase_h