reload1.c (reload): Break out several subroutines and make some variables global.

reload1.c (reload): Break out several subroutines and make some variables global.

	* reload1.c (reload): Break out several subroutines and make some
	variables global.
	(calculate_needs_all_insns): New function, broken out of reload.
	(calculate_needs): Likewise.
	(find_reload_regs): Likewise.
	(find_group): Likewise.
	(find_tworeg_group): Likewise.
	(something_needs_reloads): New global variable, formerly in reload.
	(something_needs_elimination): Likewise.
	(caller_save_spill_class): Likewise.
	(caller_save_group_size): Likewise.
	(max_needs): Likewise.
	(group_size): Likewise.
	(max_groups): Likewise.
	(max_nongroups): Likewise.
	(group_mode): Likewise.
	(max_needs_insn): Likewise.
	(max_groups_insn): Likewise.
	(max_nongroups_insn): Likewise.
	(failure): Likewise.

From-SVN: r22367