* tree.c (free_lang_data_in_type): Only check main variants.

From-SVN: r265520

gcc/ChangeLog

 2018-10-26  Jan Hubicka  <jh@suse.cz>
 
+	* tree.c (free_lang_data_in_type): Only check main variants.
 	* ipa-devirt.c (warn_odr): Make static.
 	(types_same_for_odr): Drop strict variant.
 	(types_odr_comparable): Likewise.

gcc/tree.c

@@ -5174,7 +5174,7 @@ free_lang_data_in_type (tree type)
 
   /* Drop TYPE_DECLs in TYPE_NAME in favor of the identifier in the
      TYPE_DECL if the type doesn't have linkage.  */
-  if (! type_with_linkage_p (type))
+  if (type != TYPE_MAIN_VARIANT (type) || ! type_with_linkage_p (type))
     {
       TYPE_NAME (type) = TYPE_IDENTIFIER (type);
       TYPE_STUB_DECL (type) = NULL;