src/share/vm/opto/live.hpp

rev 4266 : 8009721: Make PhaseLive independent from regalloc
Summary: Moved class definition of LRG_List from chaitin.hpp to live.hpp
Reviewed-by:
Contributed-by: niclas.adlertz@oracle.com

*** 31,45 ****
  #include "opto/indexSet.hpp"
  #include "opto/phase.hpp"
  #include "opto/regmask.hpp"
  
  class Block;
- class LRG_List;
  class PhaseCFG;
  class VectorSet;
  class IndexSet;
  
  //------------------------------PhaseLive--------------------------------------
  // Compute live-in/live-out
  class PhaseLive : public Phase {
    // Array of Sets of values live at the start of a block.
    // Indexed by block pre-order number.
--- 31,69 ----
  #include "opto/indexSet.hpp"
  #include "opto/phase.hpp"
  #include "opto/regmask.hpp"
  
  class Block;
  class PhaseCFG;
  class VectorSet;
  class IndexSet;
  
+ //------------------------------LRG_List---------------------------------------
+ // Map Node indices to Live RanGe indices.
+ // Array lookup in the optimized case.
+ class LRG_List : public ResourceObj {
+   friend class VMStructs;
+   uint _cnt, _max;
+   uint* _lidxs;
+   ReallocMark _nesting;         // assertion check for reallocations
+ public:
+   LRG_List( uint max );
+ 
+   uint lookup( uint nidx ) const {
+     return _lidxs[nidx];
+   }
+   uint operator[] (uint nidx) const { return lookup(nidx); }
+ 
+   void map( uint nidx, uint lidx ) {
+     assert( nidx < _cnt, "oob" );
+     _lidxs[nidx] = lidx;
+   }
+   void extend( uint nidx, uint lidx );
+ 
+   uint Size() const { return _cnt; }
+ };
+ 
  //------------------------------PhaseLive--------------------------------------
  // Compute live-in/live-out
  class PhaseLive : public Phase {
    // Array of Sets of values live at the start of a block.
    // Indexed by block pre-order number.