gcc/ChangeLog:
	* cfgloop.c (get_loop_location): Convert return type from
	location_t to dump_user_location_t, replacing INSN_LOCATION lookups
	by implicit construction from rtx_insn *, and using
	dump_user_location_t::from_function_decl for the fallback case.
	* cfgloop.h (get_loop_location): Convert return type from
	location_t to dump_user_location_t.
	* cgraphunit.c (walk_polymorphic_call_targets): Update call to
	dump_printf_loc to pass in a dump_location_t rather than a
	location_t, via the gimple stmt.
	* coverage.c (get_coverage_counts): Update calls to
	dump_printf_loc to pass in dump_location_t rather than a
	location_t.
	* doc/optinfo.texi (Dump types): Convert example of
	dump_printf_loc from taking "locus" to taking "insn".  Update
	description of the "_loc" calls to cover dump_location_t.
	* dumpfile.c: Include "backend.h", "gimple.h", "rtl.h", and
	"selftest.h".
	(dump_user_location_t::dump_user_location_t): New constructors,
	from gimple *stmt and rtx_insn *.
	(dump_user_location_t::from_function_decl): New function.
	(dump_loc): Make static.
	(dump_gimple_stmt_loc): Convert param "loc" from location_t to
	const dump_location_t &.
	(dump_generic_expr_loc): Delete.
	(dump_printf_loc): Convert param "loc" from location_t to
	const dump_location_t &.
	(selftest::test_impl_location): New function.
	(selftest::dumpfile_c_tests): New function.
	* dumpfile.h: Include "profile-count.h".
	(class dump_user_location_t): New class.
	(struct dump_impl_location_t): New struct.
	(class dump_location_t): New class.
	(dump_printf_loc): Convert 2nd param from source_location to
	const dump_location_t &.
	(dump_generic_expr_loc): Delete.
	(dump_gimple_stmt_loc): Convert 2nd param from source_location to
	const dump_location_t &.
	* gimple-fold.c (fold_gimple_assign): Update call to
	dump_printf_loc to pass in a dump_location_t rather than a
	location_t, via the gimple stmt.
	(gimple_fold_call): Likewise.
	* gimple-loop-interchange.cc
	(loop_cand::analyze_iloop_reduction_var): Update for change to
	check_reduction_path.
	(tree_loop_interchange::interchange): Update for change to
	find_loop_location.
	* graphite-isl-ast-to-gimple.c (scop_to_isl_ast): Update for
	change in return-type of find_loop_location.
	(graphite_regenerate_ast_isl): Likewise.
	* graphite-optimize-isl.c (optimize_isl): Likewise.
	* graphite.c (graphite_transform_loops): Likewise.
	* ipa-devirt.c (ipa_devirt): Update call to dump_printf_loc to
	pass in a dump_location_t rather than a location_t, via the
	gimple stmt.
	* ipa-prop.c (ipa_make_edge_direct_to_target): Likewise.
	* ipa.c (walk_polymorphic_call_targets): Likewise.
	* loop-unroll.c (report_unroll): Convert "locus" param from
	location_t to dump_location_t.
	(decide_unrolling): Update for change to get_loop_location's
	return type.
	* omp-grid.c (struct grid_prop): Convert field "target_loc" from
	location_t to dump_user_location_t.
	(grid_find_single_omp_among_assignments_1): Updates calls to
	dump_printf_loc to pass in a dump_location_t rather than a
	location_t, via the gimple stmt.
	(grid_parallel_clauses_gridifiable): Convert "tloc" from
	location_t to dump_location_t.  Updates calls to dump_printf_loc
	to pass in a dump_location_t rather than a location_t, via the
	gimple stmt.
	(grid_inner_loop_gridifiable_p): Likewise.
	(grid_dist_follows_simple_pattern): Likewise.
	(grid_gfor_follows_tiling_pattern): Likewise.
	(grid_target_follows_gridifiable_pattern): Likewise.
	(grid_attempt_target_gridification): Convert initialization
	of local "grid" from memset to zero-initialization; FIXME: does
	this require C++11?  Update call to dump_printf_loc to pass in a
	optinfo_location rather than a location_t, via the gimple stmt.
	* profile.c (read_profile_edge_counts): Updates call to
	dump_printf_loc to pass in a dump_location_t rather than a
	location_t
	(compute_branch_probabilities): Likewise.
	* selftest-run-tests.c (selftest::run_tests): Call
	dumpfile_c_tests.
	* selftest.h (dumpfile_c_tests): New decl.
	* tree-loop-distribution.c (pass_loop_distribution::execute):
	Update for change in return type of find_loop_location.
	* tree-parloops.c (parallelize_loops): Likewise.
	* tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Convert
	"locus" from location_t to dump_user_location_t.
	(canonicalize_loop_induction_variables): Likewise.
	* tree-ssa-loop-ivopts.c (tree_ssa_iv_optimize_loop): Update
	for change in return type of find_loop_location.
	* tree-ssa-loop-niter.c (number_of_iterations_exit): Update call
	to dump_printf_loc to pass in a dump_location_t rather than a
	location_t, via the stmt.
	* tree-ssa-sccvn.c (eliminate_dom_walker::before_dom_children):
	Likewise.
	* tree-vect-loop-manip.c (find_loop_location): Convert return
	type from source_location to dump_user_location_t.
	(vect_do_peeling): Update for above change.
	(vect_loop_versioning): Update for change in type of
	vect_location.
	* tree-vect-loop.c (check_reduction_path): Convert "loc" param
	from location_t to dump_user_location_t.
	(vect_estimate_min_profitable_iters): Update for change in type
	of vect_location.
	* tree-vect-slp.c (vect_print_slp_tree): Convert param "loc" from
	location_t to dump_location_t.
	(vect_slp_bb): Update for change in type of vect_location.
	* tree-vectorizer.c (vect_location): Convert from source_location
	to dump_user_location_t.
	(try_vectorize_loop_1): Update for change in vect_location's type.
	(vectorize_loops): Likewise.
	(increase_alignment): Likewise.
	* tree-vectorizer.h (vect_location): Convert from source_location
	to dump_user_location_t.
	(find_loop_location): Convert return type from source_location to
	dump_user_location_t.
	(check_reduction_path): Convert 1st param from location_t to
	dump_user_location_t.
	* value-prof.c (check_counter): Update call to dump_printf_loc to
	pass in a dump_user_location_t rather than a location_t; update
	call to error_at for change in type of "locus".
	(check_ic_target): Update call to dump_printf_loc to
	pass in a dump_user_location_t rather than a location_t, via the
	call_stmt.

From-SVN: r262149