Fix various memory leaks

	* gimple-ssa-strength-reduction.c (create_phi_basis):
	Use auto_vec.
	* passes.c (release_dump_file_name): New function.
	(pass_init_dump_file): Used from this function.
	(pass_fini_dump_file): Likewise.
	* tree-sra.c (convert_callers_for_node): Use xstrdup_for_dump.
	* var-tracking.c (vt_initialize): Use pool_allocator.

From-SVN: r230152

gcc/ChangeLog

+2015-11-11  Martin Liska  <mliska@suse.cz>
+
+	* gimple-ssa-strength-reduction.c (create_phi_basis):
+	Use auto_vec.
+	* passes.c (release_dump_file_name): New function.
+	(pass_init_dump_file): Used from this function.
+	(pass_fini_dump_file): Likewise.
+	* tree-sra.c (convert_callers_for_node): Use xstrdup_for_dump.
+	* var-tracking.c (vt_initialize): Use pool_allocator.
+
 2015-11-11  Richard Biener  <rguenth@gcc.gnu.org>
 	    Jiong Wang	    <jiong.wang@arm.com>
 

gcc/gimple-ssa-strength-reduction.c

@@ -2226,12 +2226,11 @@ create_phi_basis (slsr_cand_t c, gimple *from_phi, tree basis_name,
   int i;
   tree name, phi_arg;
   gphi *phi;
-  vec<tree> phi_args;
   slsr_cand_t basis = lookup_cand (c->basis);
   int nargs = gimple_phi_num_args (from_phi);
   basic_block phi_bb = gimple_bb (from_phi);
   slsr_cand_t phi_cand = base_cand_from_table (gimple_phi_result (from_phi));
-  phi_args.create (nargs);
+  auto_vec<tree> phi_args (nargs);
 
   /* Process each argument of the existing phi that represents
      conditionally-executed add candidates.  */

gcc/passes.c

@@ -2058,6 +2058,18 @@ verify_curr_properties (function *fn, void *data)
   gcc_assert ((fn->curr_properties & props) == props);
 }
 
+/* Release dump file name if set.  */
+
+static void
+release_dump_file_name (void)
+{
+  if (dump_file_name)
+    {
+      free (CONST_CAST (char *, dump_file_name));
+      dump_file_name = NULL;
+    }
+}
+
 /* Initialize pass dump file.  */
 /* This is non-static so that the plugins can use it.  */
 
@@ -2071,6 +2083,7 @@ pass_init_dump_file (opt_pass *pass)
       gcc::dump_manager *dumps = g->get_dumps ();
       bool initializing_dump =
 	!dumps->dump_initialized_p (pass->static_pass_number);
+      release_dump_file_name ();
       dump_file_name = dumps->get_dump_file_name (pass->static_pass_number);
       dumps->dump_start (pass->static_pass_number, &dump_flags);
       if (dump_file && current_function_decl)
@@ -2098,11 +2111,7 @@ pass_fini_dump_file (opt_pass *pass)
   timevar_push (TV_DUMP);
 
   /* Flush and close dump file.  */
-  if (dump_file_name)
-    {
-      free (CONST_CAST (char *, dump_file_name));
-      dump_file_name = NULL;
-    }
+  release_dump_file_name ();
 
   g->get_dumps ()->dump_finish (pass->static_pass_number);
   timevar_pop (TV_DUMP);

gcc/tree-sra.c

@@ -4996,9 +4996,9 @@ convert_callers_for_node (struct cgraph_node *node,
 
       if (dump_file)
 	fprintf (dump_file, "Adjusting call %s/%i -> %s/%i\n",
-		 xstrdup (cs->caller->name ()),
+		 xstrdup_for_dump (cs->caller->name ()),
 		 cs->caller->order,
-		 xstrdup (cs->callee->name ()),
+		 xstrdup_for_dump (cs->callee->name ()),
 		 cs->callee->order);
 
       ipa_modify_call_arguments (cs, cs->call_stmt, *adjustments);

gcc/var-tracking.c

@@ -9814,7 +9814,7 @@ vt_initialize (void)
 
   alloc_aux_for_blocks (sizeof (variable_tracking_info));
 
-  empty_shared_hash = new shared_hash;
+  empty_shared_hash = shared_hash_pool.allocate ();
   empty_shared_hash->refcount = 1;
   empty_shared_hash->htab = new variable_table_type (1);
   changed_variables = new variable_table_type (10);