JavaScriptCore-1097.13.tar.gz

[apple/javascriptcore.git] / dfg / DFGCSEPhase.h

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

#include <wtf/Platform.h>

#if ENABLE(DFG_JIT)

namespace JSC { namespace DFG {

class Graph;

// Block-local common subexpression elimination. This is an optional phase, but
// it is rather profitable. It has fairly accurate heap modeling and will match
// a wide range of subexpression similarities. It's known to produce big wins
// on a few benchmarks, and is relatively cheap to run.

void performCSE(Graph&);

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)

#endif // DFGCSEPhase_h