2008-11-07  Vladimir Makarov  <vmakarov@redhat.com>
	    
	PR rtl-optimizations/37948
	* ira-int.h (struct ira_allocno_copy): New member constraint_p.
	(ira_create_copy, ira_add_allocno_copy): New parameter.

	* ira-conflicts.c (process_regs_for_copy): New parameter.  Pass it
	to ira_add_allocno_copy.
	(process_reg_shuffles, add_insn_allocno_copies): Pass a new
	parameter to process_regs_for_copy.
	(propagate_copies): Pass a new parameter to ira_add_allocno_copy.
	Fix typo in passing second allocno to ira_add_allocno_copy.

	* ira-color.c (update_conflict_hard_regno_costs): Use head of
	coalesced allocnos list.
	(assign_hard_reg): Ditto.  Check that assigned allocnos are not in
	the graph.
	(add_ira_allocno_to_bucket): Rename to add_allocno_to_bucket.
	(add_ira_allocno_to_ordered_bucket): Rename to
	add_allocno_to_ordered_bucket.
	(push_ira_allocno_to_stack): Rename to push_allocno_to_stack.  Use
	head of coalesced allocnos list.
	(push_allocnos_to_stack): Remove calculation of ALLOCNO_TEMP.
	Check that it is aready calculated.
	(push_ira_allocno_to_spill): Rename to push_ira_allocno_to_spill.
	(setup_allocno_left_conflicts_num): Use head of coalesced allocnos
	list.
	(coalesce_allocnos): Do extended coalescing too.

	* ira-emit.c (add_range_and_copies_from_move_list): Pass a new
	parameter to ira_add_allocno_copy.

	* ira-build.c (ira_create_copy, ira_add_allocno_copy): Add a new
	parameter.
	(print_copy): Print copy origination too.

	* ira-costs.c (scan_one_insn): Use alloc_pref for load from
	equivalent memory.

From-SVN: r141753