Adjust by-value function vec arguments to by-reference.

gcc/c/ChangeLog:

	* c-parser.c (c_parser_declaration_or_fndef): Adjust by-value function
	vec arguments to by-reference.
	(c_finish_omp_declare_simd): Same.
	(c_parser_compound_statement_nostart): Same.
	(c_parser_for_statement): Same.
	(c_parser_objc_methodprotolist): Same.
	(c_parser_oacc_routine): Same.
	(c_parser_omp_for_loop): Same.
	(c_parser_omp_declare_simd): Same.

gcc/ChangeLog:

	* dominance.c (prune_bbs_to_update_dominators): Adjust by-value vec
	arguments to by-reference.
	(iterate_fix_dominators): Same.
	* dominance.h (iterate_fix_dominators): Same.
	* ipa-prop.h: Call auto_vec::to_vec_legacy.
	* tree-data-ref.c (dump_data_dependence_relation): Adjust by-value vec
	arguments to by-reference.
	(debug_data_dependence_relation): Same.
	(dump_data_dependence_relations): Same.
	* tree-data-ref.h (debug_data_dependence_relation): Same.
	(dump_data_dependence_relations): Same.
	* tree-predcom.c (dump_chains): Same.
	(initialize_root_vars_lm): Same.
	(determine_unroll_factor): Same.
	(replace_phis_by_defined_names): Same.
	(insert_init_seqs): Same.
	(pcom_worker::tree_predictive_commoning_loop): Call
	 auto_vec::to_vec_legacy.
	* tree-ssa-pre.c (insert_into_preds_of_block): Adjust by-value vec
	arguments to by-reference.
	* tree-ssa-threadbackward.c (populate_worklist): Same.
	(back_threader::resolve_def): Same.
	* tree-vect-data-refs.c (vect_check_nonzero_value): Same.
	(vect_enhance_data_refs_alignment): Same.
	(vect_check_lower_bound): Same.
	(vect_prune_runtime_alias_test_list): Same.
	(vect_permute_store_chain): Same.
	* tree-vect-slp-patterns.c (vect_normalize_conj_loc): Same.
	* tree-vect-stmts.c (vect_create_vectorized_demotion_stmts): Same.
	* tree-vectorizer.h (vect_permute_store_chain): Same.
	* vec.c (test_init): New function.
	(vec_c_tests): Call new function.
	* vec.h (vec): Declare ctors, dtor, and assignment.
	(auto_vec::vec_to_legacy): New function.
	(vec::copy): Adjust initialization.

1 files changed, 3 insertions, 3 deletions

diff --git a/gcc/tree-ssa-threadbackward.c b/gcc/tree-ssa-threadbackward.c
index 91ce443..e237eb4 100644
--- a/gcc/tree-ssa-threadbackward.c
+++ b/gcc/tree-ssa-threadbackward.c
@@ -92,7 +92,7 @@ public:
 private:
   void maybe_register_path (edge taken_edge);
   bool find_paths_to_names (basic_block bb, bitmap imports);
-  bool resolve_def (tree name, bitmap interesting, vec<tree> worklist);
+  bool resolve_def (tree name, bitmap interesting, vec<tree> &worklist);
   bool resolve_phi (gphi *phi, bitmap imports);
   edge find_taken_edge (const vec<basic_block> &path);
   edge find_taken_edge_cond (const vec<basic_block> &path, gcond *);
@@ -240,7 +240,7 @@ back_threader::find_taken_edge_cond (const vec<basic_block> &path,
 // Populate a vector of trees from a bitmap.
 
 static inline void
-populate_worklist (vec<tree> worklist, bitmap bits)
+populate_worklist (vec<tree> &worklist, bitmap bits)
 {
   bitmap_iterator bi;
   unsigned i;
@@ -317,7 +317,7 @@ back_threader::resolve_phi (gphi *phi, bitmap interesting)
 // current path to be constant, register the path, and return TRUE.
 
 bool
-back_threader::resolve_def (tree name, bitmap interesting, vec<tree> worklist)
+back_threader::resolve_def (tree name, bitmap interesting, vec<tree> &worklist)
 {
   gimple *def_stmt = SSA_NAME_DEF_STMT (name);