use range based for loops to iterate over vec<>

This changes users of FOR_EACH_VEC_ELT to use range based for loops,
where the index variables are otherwise unused.  As such the index
variables are all deleted, producing shorter and simpler code.

Signed-off-by: Trevor Saunders <tbsaunde@tbsaunde.org>

gcc/analyzer/ChangeLog:

	* call-string.cc (call_string::call_string): Use range based for
	to iterate over vec<>.
	(call_string::to_json): Likewise.
	(call_string::hash): Likewise.
	(call_string::calc_recursion_depth): Likewise.
	* checker-path.cc (checker_path::fixup_locations): Likewise.
	* constraint-manager.cc (equiv_class::equiv_class): Likewise.
	(equiv_class::to_json): Likewise.
	(equiv_class::hash): Likewise.
	(constraint_manager::to_json): Likewise.
	* engine.cc (impl_region_model_context::on_svalue_leak):
	Likewise.
	(on_liveness_change): Likewise.
	(impl_region_model_context::on_unknown_change): Likewise.
	* program-state.cc (sm_state_map::set_state): Likewise.
	* region-model.cc (test_canonicalization_4): Likewise.

gcc/ChangeLog:

	* attribs.c (find_attribute_namespace): Iterate over vec<> with
	range based for.
	* auto-profile.c (afdo_find_equiv_class): Likewise.
	* gcc.c (do_specs_vec): Likewise.
	(do_spec_1): Likewise.
	(driver::set_up_specs): Likewise.
	* gimple-loop-jam.c (any_access_function_variant_p): Likewise.
	* gimple-ssa-store-merging.c (compatible_load_p): Likewise.
	(imm_store_chain_info::try_coalesce_bswap): Likewise.
	(imm_store_chain_info::coalesce_immediate_stores): Likewise.
	(get_location_for_stmts): Likewise.
	* graphite-poly.c (print_iteration_domains): Likewise.
	(free_poly_bb): Likewise.
	(remove_gbbs_in_scop): Likewise.
	(free_scop): Likewise.
	(dump_gbb_cases): Likewise.
	(dump_gbb_conditions): Likewise.
	(print_pdrs): Likewise.
	(print_scop): Likewise.
	* ifcvt.c (cond_move_process_if_block): Likewise.
	* lower-subreg.c (decompose_multiword_subregs): Likewise.
	* regcprop.c (pass_cprop_hardreg::execute): Likewise.
	* sanopt.c (sanitize_rewrite_addressable_params): Likewise.
	* sel-sched-dump.c (dump_insn_vector): Likewise.
	* store-motion.c (store_ops_ok): Likewise.
	(store_killed_in_insn): Likewise.
	* timevar.c (timer::named_items::print): Likewise.
	* tree-cfgcleanup.c (cleanup_control_flow_pre): Likewise.
	(cleanup_tree_cfg_noloop): Likewise.
	* tree-data-ref.c (dump_data_references): Likewise.
	(print_dir_vectors): Likewise.
	(print_dist_vectors): Likewise.
	(dump_data_dependence_relations): Likewise.
	(dump_dist_dir_vectors): Likewise.
	(dump_ddrs): Likewise.
	(create_runtime_alias_checks): Likewise.
	(free_subscripts): Likewise.
	(save_dist_v): Likewise.
	(save_dir_v): Likewise.
	(invariant_access_functions): Likewise.
	(same_access_functions): Likewise.
	(access_functions_are_affine_or_constant_p): Likewise.
	(find_data_references_in_stmt): Likewise.
	(graphite_find_data_references_in_stmt): Likewise.
	(free_dependence_relations): Likewise.
	(free_data_refs): Likewise.
	* tree-inline.c (copy_debug_stmts): Likewise.
	* tree-into-ssa.c (dump_currdefs): Likewise.
	(rewrite_update_phi_arguments): Likewise.
	* tree-ssa-propagate.c (clean_up_loop_closed_phi): Likewise.
	* tree-vect-data-refs.c (vect_analyze_possibly_independent_ddr):
	Likewise.
	(vect_slp_analyze_node_dependences): Likewise.
	(vect_slp_analyze_instance_dependence): Likewise.
	(vect_record_base_alignments): Likewise.
	(vect_get_peeling_costs_all_drs): Likewise.
	(vect_peeling_supportable): Likewise.
	* tree-vectorizer.c (vec_info::~vec_info): Likewise.
	(vec_info::free_stmt_vec_infos): Likewise.

gcc/cp/ChangeLog:

	* constexpr.c (cxx_eval_call_expression): Iterate over vec<>
	with range based for.
	(cxx_eval_store_expression): Likewise.
	(cxx_eval_loop_expr): Likewise.
	* decl.c (wrapup_namespace_globals): Likewise.
	(cp_finish_decl): Likewise.
	(cxx_simulate_enum_decl): Likewise.
	* parser.c (cp_parser_postfix_expression): Likewise.

1 files changed, 3 insertions, 10 deletions

diff --git a/gcc/gcc.c b/gcc/gcc.c
index 4c1a659..af28640 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -5838,10 +5838,7 @@ compile_input_file_p (struct infile *infile)
 static void
 do_specs_vec (vec<char_p> vec)
 {
-  unsigned ix;
-  char *opt;
-
-  FOR_EACH_VEC_ELT (vec, ix, opt)
+  for (char *opt : vec)
     {
       do_spec_1 (opt, 1, NULL);
       /* Make each accumulated option a separate argument.  */
@@ -6436,8 +6433,6 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
 	    {
 	      const char *p1 = p;
 	      char *string;
-	      char *opt;
-	      unsigned ix;
 
 	      /* Skip past the option value and make a copy.  */
 	      if (*p != '{')
@@ -6448,7 +6443,7 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
 	      string = save_string (p1 + 1, p - p1 - 2);
 
 	      /* See if we already recorded this option.  */
-	      FOR_EACH_VEC_ELT (linker_options, ix, opt)
+	      for (const char *opt : linker_options)
 		if (! strcmp (string, opt))
 		  {
 		    free (string);
@@ -8316,9 +8311,7 @@ driver::set_up_specs () const
       && do_spec_2 (startfile_prefix_spec, NULL) == 0
       && do_spec_1 (" ", 0, NULL) == 0)
     {
-      const char *arg;
-      int ndx;
-      FOR_EACH_VEC_ELT (argbuf, ndx, arg)
+      for (const char *arg : argbuf)
 	add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
 			      PREFIX_PRIORITY_LAST, 0, 1);
     }