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	* caller-save.c (insert_save_restore): Break this function up
	into new functions insert_restore, insert_save and insert_one_insn.
	All callers changed.
	(insert_restore): New function, mostly broken out of
	insert_save_restore.
	(insert_save): Likewise.
	(insert_one_insn): Likewise.
	(restore_referenced_regs): New argument BLOCK.  All callers changed.
	(save_call_clobbered_regs): Don't keep track of basic block boundaries
	in this function, do it in insert_one_insn instead.

From-SVN: r22754