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gcc/ * ira-color.c (conflict_allocno_vec): Delete. (update_cost_queue_elem): New structure. (update_cost_queue): New variable. (update_cost_queue_tail): Likewise. (update_cost_queue_elems): Likewise. (allocno_update_cost_check): Delete. (initiate_cost_update): Allocate update_cost_queue_elems instead of allocno_update_cost_check. (finish_cost_update): Update the free()s accordingly. (start_update_cost): New function. (queue_update_cost): Likewise. (get_next_update_cost): Likewise. (update_copy_costs_1): Inline into... (update_copy_costs): ...here. Use a queue instead of recursive calls. Use cover_class instead of ALLOCNO_COVER_CLASS (another_allocno), once we've established they are equal. Don't allocate update costs if there is nothing to add to them. (update_conflict_hard_regno_costs): Remove ALLOCNO and DIVISOR arguments. Use a queue instead of recursive calls; process all the allocnos in the initial queue, rather than a single allocno. (assign_hard_reg): Use queue_update_cost instead of conflict_allocno_vec. Queue coalesced allocnos instead of calling update_conflict_hard_regno_costs for each one. Just call update_conflict_hard_regno_costs once for the entire queue. (ira_color): Remove conflict_allocno_vec handling. From-SVN: r140335
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