tree.c (free_lang_data_in_type, [...]): Also free unnecesary type decls.

	* tree.c (free_lang_data_in_type, find_decls_types_r): Also free
	unnecesary type decls.
	* tree.h (is_redundant_typedef): Declare.
	* dwarf2out.c (is_redundant_typedef): Export; booleanize

From-SVN: r231588

gcc/ChangeLog

+2015-12-10  Jan Hubicka  <hubicka@ucw.cz>
+
+	* tree.c (free_lang_data_in_type, find_decls_types_r): Also free
+	unnecesary type decls.
+	* tree.h (is_redundant_typedef): Declare.
+	* dwarf2out.c (is_redundant_typedef): Export; booleanize
+
 2015-12-12  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* config/sparc/sparc.h (TARGET_SUPPORTS_WIDE_INT): Define to 1.

gcc/dwarf2out.c

@@ -3319,7 +3319,6 @@ static void gen_typedef_die (tree, dw_die_ref);
 static void gen_type_die (tree, dw_die_ref);
 static void gen_block_die (tree, dw_die_ref);
 static void decls_for_scope (tree, dw_die_ref);
-static inline int is_redundant_typedef (const_tree);
 static bool is_naming_typedef_decl (const_tree);
 static inline dw_die_ref get_context_die (tree);
 static void gen_namespace_die (tree, dw_die_ref);
@@ -21117,11 +21116,11 @@ decls_for_scope (tree stmt, dw_die_ref context_die)
 
 /* Is this a typedef we can avoid emitting?  */
 
-static inline int
+bool
 is_redundant_typedef (const_tree decl)
 {
   if (TYPE_DECL_IS_STUB (decl))
-    return 1;
+    return true;
 
   if (DECL_ARTIFICIAL (decl)
       && DECL_CONTEXT (decl)
@@ -21129,9 +21128,9 @@ is_redundant_typedef (const_tree decl)
       && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL
       && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl))))
     /* Also ignore the artificial member typedef for the class name.  */
-    return 1;
+    return true;
 
-  return 0;
+  return false;
 }
 
 /* Return TRUE if TYPE is a typedef that names a type for linkage

gcc/tree.c

@@ -5191,7 +5191,10 @@ free_lang_data_in_type (tree type)
       while (member)
 	{
 	  if (TREE_CODE (member) == FIELD_DECL
-	      || TREE_CODE (member) == TYPE_DECL)
+	      || (TREE_CODE (member) == TYPE_DECL
+		  && !DECL_IGNORED_P (member)
+		  && debug_info_level > DINFO_LEVEL_TERSE
+		  && !is_redundant_typedef (member)))
 	    {
 	      if (prev)
 		TREE_CHAIN (prev) = member;
@@ -5216,7 +5219,7 @@ free_lang_data_in_type (tree type)
       /* Remove TYPE_METHODS list.  While it would be nice to keep it
  	 to enable ODR warnings about different method lists, doing so
 	 seems to impractically increase size of LTO data streamed.
-	 Keep the infrmation if TYPE_METHODS was non-NULL. This is used
+	 Keep the information if TYPE_METHODS was non-NULL. This is used
 	 by function.c and pretty printers.  */
       if (TYPE_METHODS (type))
         TYPE_METHODS (type) = error_mark_node;
@@ -5666,7 +5669,10 @@ find_decls_types_r (tree *tp, int *ws, void *data)
 	  while (tem)
 	    {
 	      if (TREE_CODE (tem) == FIELD_DECL
-		  || TREE_CODE (tem) == TYPE_DECL)
+		  || (TREE_CODE (tem) == TYPE_DECL
+		      && !DECL_IGNORED_P (tem)
+		      && debug_info_level > DINFO_LEVEL_TERSE
+		      && !is_redundant_typedef (tem)))
 		fld_worklist_push (tem, fld);
 	      tem = TREE_CHAIN (tem);
 	    }

gcc/tree.h

@@ -5386,6 +5386,7 @@ extern void gt_pch_nx (tree &);
 extern void gt_pch_nx (tree &, gt_pointer_operator, void *);
 
 extern bool nonnull_arg_p (const_tree);
+extern bool is_redundant_typedef (const_tree);
 
 extern location_t
 set_source_range (tree expr, location_t start, location_t finish);