v8/src/hydrogen-check-elimination.h

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#ifndef V8_HYDROGEN_CHECK_ELIMINATION_H_
#define V8_HYDROGEN_CHECK_ELIMINATION_H_

#include "hydrogen.h"
#include "hydrogen-alias-analysis.h"

namespace v8 {
namespace internal {


// Remove CheckMaps instructions through flow- and branch-sensitive analysis.
class HCheckEliminationPhase : public HPhase {
 public:
  explicit HCheckEliminationPhase(HGraph* graph)
    : HPhase("H_Check Elimination", graph),
      aliasing_(),
      redundant_(0),
      removed_(0),
      narrowed_(0),
      loads_(0),
      empty_(0),
      compares_true_(0),
      compares_false_(0),
      transitions_(0) { }

  void Run();

  friend class HCheckTable;

 private:
  void PrintStats();

  HAliasAnalyzer* aliasing_;
  int redundant_;
  int removed_;
  int narrowed_;
  int loads_;
  int empty_;
  int compares_true_;
  int compares_false_;
  int transitions_;
};


} }  // namespace v8::internal

#endif  // V8_HYDROGEN_CHECK_ELIMINATION_H_