* rtl.h (insn_location): Declare.
	* cfgcleanup.c (try_forward_edges): Compare the locus of locations
	with UNKNOWN_LOCATION.
	* emit-rtl.c (insn_location): New function.
	* final.c (notice_source_line): Check that the instruction has a
	location before retrieving it and use insn_location.
	* modulo-sched.c (loop_single_full_bb_p): Likewise.
	* print-rtl.c (print_rtx): Likewise.

From-SVN: r211305