* coverage.h (coverage_counter_alloc): New function.
	* function.h (struct function): Remove arc_profile flag.
	* coverage.c (fn_ident): Remove.
	(fn_b_ctrs, no_coverage): New.
	(get_coverage_counts): Use current_function_funcdef_no.
	(coverage_counter_alloc): New.
	(coverage_counter_ref): Adjust.
	(coverage_begin_output): Check no_coverage. Use
	current_function_funcdef_no.
	(coverage_end_function): Likewise.
	(create_coverage): Set no_coverage. Set DECL_UNINLINEABLE rather
	than clearing flag_inline_functions. Do not clear arc_profile
	flag.
	* function.c (prepare_function_start): Do not set arc_profile
	flag.
	* profile.c (instrument_edges): Return number of instrumented
	edges. Use a for loop.
	(branch_prob): Call coverage_counter_alloc. Make BB_TO_GCOV_INDEX
	local to here and simplify. Use profile_arc_flag not arc_profile
	flag.
	(find_spanning_tree): Reformat.
	* toplev.c (rest_of_compilation): Use profile_arc_flags and
	flag_test_coverage rather than arc_profile flag.

From-SVN: r66695