* cfglayout.c (insn_scope): New static function
	(block_locators_*, line_locators*, file_locators*): New static varrays.
	(scope_to_insns_initialize): Use them.
	(insn_line, insn_file): New functions.
	(scope_to_insns_finalize): Use insn_scope.
	(prologue_locator, epilogue_locator): New global variables.
	* emit-rt.c (try_split, make_insn_raw, make_jump_insn_raw,
	make_call_insn_raw, emit_copy_of_insn_after): Use locators.
	(emit_insn_after_scope, emit_insn_before_scope
	emit_jump_insn_after_scope, emit_jump_insn_before_scope
	emit_call_insn_after_scope, emit_call_insn_before_scope): Rename to...
	(emit_insn_after_setloc, emit_insn_before_setloc
	emit_jump_insn_after_setloc, emit_jump_insn_before_setloc
	emit_call_insn_after_setloc, emit_call_insn_before_setloc): ... these;
	use locators.
	* final.c (notice_source_line): Use locators.
	(final_start_function): Set initial source file and line.
	(final_scan_insn): Use locators.
	* ifcvt.c (noce_try_store_flag, noce_try_store_flag_constants,
	noce_try_addcc, noce_try_store_flag_mask, noce_try_cmove,
	noce_try_cmove_arith, noce_try_minmax, noce_try_abs,
	noce_process_if_block, find_cond_trap): Likewise.
	* integrate.c (copy_insn_list): Likewise.
	* jump.c (duplicate_loop_exit_test): LIkewise.
	* print-rtl.c (print_rtx): Print locators.
	* recog.c (peephole2_optimize): Likewise.
	* rtl.h (INSN_SCOPE): Remove.
	(emit_insn_after_scope, emit_insn_before_scope
	emit_jump_insn_after_scope, emit_jump_insn_before_scope
	emit_call_insn_after_scope, emit_call_insn_before_scope): Rename to...
	(emit_insn_after_setloc, emit_insn_before_setloc
	emit_jump_insn_after_setloc, emit_jump_insn_before_setloc
	emit_call_insn_after_setloc, emit_call_insn_before_setloc): ... these;
	(insn_file, insn_line, prologue_locator, epilogue_locator): Declare.
	* unroll.c (copy_loop_body): Use locators.
	* function.c (set_insn_locators): New function.
	(thread_prologue_and_epilogue_insns): Set the locators accordingly.

From-SVN: r67637