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, 6 insertions, 7 deletions

diff --git a/gcc/tree-predcom.c b/gcc/tree-predcom.c
index bed30d2..6b195d1 100644
--- a/gcc/tree-predcom.c
+++ b/gcc/tree-predcom.c
@@ -639,9 +639,8 @@ dump_chain (FILE *file, chain_p chain)
 
 /* Dumps CHAINS to FILE.  */
 
-extern void dump_chains (FILE *, vec<chain_p> );
 void
-dump_chains (FILE *file, vec<chain_p> chains)
+dump_chains (FILE *file, const vec<chain_p> &chains)
 {
   chain_p chain;
   unsigned i;
@@ -2049,7 +2048,7 @@ finalize_eliminated_stores (class loop *loop, chain_p chain)
 
 static void
 initialize_root_vars_lm (class loop *loop, dref root, bool written,
-			 vec<tree> *vars, vec<tree> inits,
+			 vec<tree> *vars, const vec<tree> &inits,
 			 bitmap tmp_vars)
 {
   unsigned i;
@@ -2324,7 +2323,7 @@ pcom_worker::execute_pred_commoning_chain (chain_p chain,
    optimized.  */
 
 static unsigned
-determine_unroll_factor (vec<chain_p> chains)
+determine_unroll_factor (const vec<chain_p> &chains)
 {
   chain_p chain;
   unsigned factor = 1, af, nfactor, i;
@@ -2401,7 +2400,7 @@ pcom_worker::execute_pred_commoning (bitmap tmp_vars)
    phi node, record the ssa name that is defined by it.  */
 
 static void
-replace_phis_by_defined_names (vec<chain_p> chains)
+replace_phis_by_defined_names (vec<chain_p> &chains)
 {
   chain_p chain;
   dref a;
@@ -3276,7 +3275,7 @@ pcom_worker::prepare_finalizers ()
 /* Insert all initializing gimple stmts into LOOP's entry edge.  */
 
 static void
-insert_init_seqs (class loop *loop, vec<chain_p> chains)
+insert_init_seqs (class loop *loop, vec<chain_p> &chains)
 {
   unsigned i;
   edge entry = loop_preheader_edge (loop);
@@ -3387,7 +3386,7 @@ pcom_worker::tree_predictive_commoning_loop (bool allow_unroll_p)
 	fprintf (dump_file, "Unrolling %u times.\n", unroll_factor);
 
       dta.tmp_vars = tmp_vars;
-      dta.chains = m_chains;
+      dta.chains = m_chains.to_vec_legacy ();
       dta.worker = this;
 
       /* Cfg manipulations performed in tree_transform_and_unroll_loop before