intervalInfo.hpp

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/* Copyright 1994-1996, LongView Technologies L.L.C. $Revision: 1.2 $ */
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#ifdef DELTA_COMPILER

// A IntervalInfo contains compiler-related data/functionality that is associated
// with a MethodInterval.  (It's not in MethodInterval itself to avoid cluttering
// it up.)
// The main purpose of IntervalInfo is to exploit the method structure for optimization
// (esp. to get a cheap "dominates" relationship).   
// This code is only halfway finished -- not used yet.  -Urs 9/96

class IntervalInfo: public PrintableResourceObj {
  MethodInterval* _interval;      // my interval
  InlinedScope*   _scope;         // my scope

 public:
  IntervalInfo(MethodInterval* interval, InlinedScope* scope);

  MethodInterval* interval() const              { return _interval; }
  InlinedScope*   scope() const                 { return _scope; }

  bool dominates(int bci, IntervalInfo* other, int otherBCI) const;     
      // does bytecode (receiver, bci) dominate (other, otherBCI)?
  bool isParentOf(IntervalInfo* other) const;   
      // is receiver a parent of other?

  void print();
};

#endif

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