434   // Return TRUE if any spills occured.
 435   uint Select( );
 436   // Helper function for select which allows biased coloring
 437   OptoReg::Name choose_color( LRG &lrg, int chunk );
 438   // Helper function which implements biasing heuristic
 439   OptoReg::Name bias_color( LRG &lrg, int chunk );
 440 
 441   // Split uncolorable live ranges
 442   // Return new number of live ranges
 443   uint Split( uint maxlrg );
 444 
 445   // Copy 'was_spilled'-edness from one Node to another.
 446   void copy_was_spilled( Node *src, Node *dst );
 447   // Set the 'spilled_once' or 'spilled_twice' flag on a node.
 448   void set_was_spilled( Node *n );
 449 
 450   // Convert ideal spill-nodes into machine loads & stores
 451   // Set C->failing when fixup spills could not complete, node limit exceeded.
 452   void fixup_spills();
 453 






 454   // Post-Allocation peephole copy removal
 455   void post_allocate_copy_removal();
 456   Node *skip_copies( Node *c );
 457   int yank_if_dead( Node *old, Block *current_block, Node_List *value, Node_List *regnd );
 458   int elide_copy( Node *n, int k, Block *current_block, Node_List &value, Node_List &regnd, bool can_change_regs );
 459   int use_prior_register( Node *copy, uint idx, Node *def, Block *current_block, Node_List &value, Node_List &regnd );
 460   bool may_be_copy_of_callee( Node *def ) const;
 461 
 462   // If nreg already contains the same constant as val then eliminate it
 463   bool eliminate_copy_of_constant(Node* val, Node* n,
 464                                   Block *current_block, Node_List& value, Node_List &regnd,
 465                                   OptoReg::Name nreg, OptoReg::Name nreg2);
 466   // Extend the node to LRG mapping
 467   void add_reference( const Node *node, const Node *old_node);
 468 
 469 private:
 470 
 471   static int _final_loads, _final_stores, _final_copies, _final_memoves;
 472   static double _final_load_cost, _final_store_cost, _final_copy_cost, _final_memove_cost;
 473   static int _conserv_coalesce, _conserv_coalesce_pair;

 434   // Return TRUE if any spills occured.
 435   uint Select( );
 436   // Helper function for select which allows biased coloring
 437   OptoReg::Name choose_color( LRG &lrg, int chunk );
 438   // Helper function which implements biasing heuristic
 439   OptoReg::Name bias_color( LRG &lrg, int chunk );
 440 
 441   // Split uncolorable live ranges
 442   // Return new number of live ranges
 443   uint Split( uint maxlrg );
 444 
 445   // Copy 'was_spilled'-edness from one Node to another.
 446   void copy_was_spilled( Node *src, Node *dst );
 447   // Set the 'spilled_once' or 'spilled_twice' flag on a node.
 448   void set_was_spilled( Node *n );
 449 
 450   // Convert ideal spill-nodes into machine loads & stores
 451   // Set C->failing when fixup spills could not complete, node limit exceeded.
 452   void fixup_spills();
 453 
 454   // Collect blocks with CreateEx node.
 455   void PhaseChaitin::collect_ex_blocks(Block_List& ex_blocks);
 456 
 457   // Move CreateEx node to the beginning of its block after phis.
 458   void PhaseChaitin::fixup_ex_blocks(Block_List& ex_blocks);
 459 
 460   // Post-Allocation peephole copy removal
 461   void post_allocate_copy_removal();
 462   Node *skip_copies( Node *c );
 463   int yank_if_dead( Node *old, Block *current_block, Node_List *value, Node_List *regnd );
 464   int elide_copy( Node *n, int k, Block *current_block, Node_List &value, Node_List &regnd, bool can_change_regs );
 465   int use_prior_register( Node *copy, uint idx, Node *def, Block *current_block, Node_List &value, Node_List &regnd );
 466   bool may_be_copy_of_callee( Node *def ) const;
 467 
 468   // If nreg already contains the same constant as val then eliminate it
 469   bool eliminate_copy_of_constant(Node* val, Node* n,
 470                                   Block *current_block, Node_List& value, Node_List &regnd,
 471                                   OptoReg::Name nreg, OptoReg::Name nreg2);
 472   // Extend the node to LRG mapping
 473   void add_reference( const Node *node, const Node *old_node);
 474 
 475 private:
 476 
 477   static int _final_loads, _final_stores, _final_copies, _final_memoves;
 478   static double _final_load_cost, _final_store_cost, _final_copy_cost, _final_memove_cost;
 479   static int _conserv_coalesce, _conserv_coalesce_pair;