Source/JavaScriptCore/dfg/DFGMaximalFlushInsertionPhase.h

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#ifndef DFGMaximalFlushInsertionPhase_h
#define DFGMaximalFlushInsertionPhase_h

#if ENABLE(DFG_JIT)

namespace JSC { namespace DFG {

class Graph;

// This phase ensures we keep all locals/arguments flushed.
// What this means is: any node inbetween a SetLocal and a Flush should
// be able to observe that particular local on the stack. This phase patterns
// the graph by inserting a Flush before each SetLocal such that the Flush 
// we inserted can do a backwards search through all paths in the CFG and 
// reach a SetLocal.
// ....
// SetLocal(locX)
// <
// |
// ... We ensure that locX is available on the stack to any nodes in this region that may ask for locX.
// |
// >
// Flush(locX)
// SetLocal(locX)

bool performMaximalFlushInsertion(Graph&);

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)

#endif // DFGMaximalFlushInsertionPhase_h