src/share/vm/opto/superword.hpp

@@ -237,23 +237,27 @@
   GrowableArray<Node*> _stk;   // Stack of nodes
 
  public:
   SuperWord(PhaseIdealLoop* phase);
 
-  void transform_loop(IdealLoopTree* lpt);
+  void transform_loop(IdealLoopTree* lpt, bool do_optimization);
+
+  void unrolling_analysis(CountedLoopNode *cl, int &local_loop_unroll_factor);
 
   // Accessors for SWPointer
   PhaseIdealLoop* phase()          { return _phase; }
   IdealLoopTree* lpt()             { return _lpt; }
   PhiNode* iv()                    { return _iv; }
+  bool early_return()              { return _early_return; }
 
  private:
   IdealLoopTree* _lpt;             // Current loop tree node
   LoopNode*      _lp;              // Current LoopNode
   Node*          _bb;              // Current basic block
   PhiNode*       _iv;              // Induction var
   bool           _race_possible;   // In cases where SDMU is true
+  bool           _early_return;    // True if we do not initialize
   bool           _do_vector_loop;  // whether to do vectorization/simd style
   bool           _vector_loop_debug; // provide more printing in debug mode
   int            _num_work_vecs;   // Number of non memory vector operations
   int            _num_reductions;  // Number of reduction expressions applied
   int            _ii_first;        // generation with direct deps from mem phi

@@ -468,10 +472,13 @@
   Node* _adr;          // address pointer
   jint  _scale;        // multiplier for iv (in bytes), 0 if no loop iv
   jint  _offset;       // constant offset (in bytes)
   Node* _invar;        // invariant offset (in bytes), NULL if none
   bool  _negate_invar; // if true then use: (0 - _invar)
+  Node_Stack* _nstack;       // stack used to record a swpointer trace of variants
+  bool        _analyze_only; // Used in loop unrolling only for swpointer trace
+  uint        _stack_idx;    // Used in loop unrolling only for swpointer trace
 
   PhaseIdealLoop* phase() { return _slp->phase(); }
   IdealLoopTree*  lpt()   { return _slp->lpt(); }
   PhiNode*        iv()    { return _slp->iv();  } // Induction var
 

@@ -494,11 +501,11 @@
     Equal         = 4,
     NotEqual      = (Less | Greater),
     NotComparable = (Less | Greater | Equal)
   };
 
-  SWPointer(MemNode* mem, SuperWord* slp);
+  SWPointer(MemNode* mem, SuperWord* slp, Node_Stack *nstack, bool analyze_only);
   // Following is used to create a temporary object during
   // the pattern match of an address expression.
   SWPointer(SWPointer* p);
 
   bool valid()  { return _adr != NULL; }

@@ -510,10 +517,11 @@
   int   scale_in_bytes()  { return _scale; }
   Node* invar()           { return _invar; }
   bool  negate_invar()    { return _negate_invar; }
   int   offset_in_bytes() { return _offset; }
   int   memory_size()     { return _mem->memory_size(); }
+  Node_Stack* node_stack() { return _nstack; }
 
   // Comparable?
   int cmp(SWPointer& q) {
     if (valid() && q.valid() &&
         (_adr == q._adr || _base == _adr && q._base == q._adr) &&