* rtlanal.c (alloc_reg_note): New function, broken out of
	add_reg_note.
	(add_reg_note): Call alloc_reg_note.
	* rtl.h (alloc_reg_note): Declare.
	* combine.c (try_combine): Use alloc_reg_note.
	(recog_for_combine, move_deaths): Likewise.
	(distribute_notes): Use alloc_reg_note and add_reg_note.
	* haifa-sched.c (sched_create_recovery_edges): Use add_reg_note.
	* combine-stack-adj.c (adjust_frame_related_expr): Likewise.
	* reload1.c (eliminate_regs_1): Use alloc_reg_note.

From-SVN: r146201