Revert accidental commit

From-SVN: r279570

gcc/cp/ChangeLog

-2019-12-19  Richard Sandiford  <richard.sandiford@arm.com>
-
-	* mangle.c (write_CV_qualifiers_for_type): Don't mangle attributes
-	that contain a space.
-
 2019-12-18  Jason Merrill  <jason@redhat.com>
 
 	PR c++/91165 follow-on tweak

gcc/cp/mangle.c

@@ -2377,11 +2377,6 @@ write_CV_qualifiers_for_type (const tree type)
 	  tree name = get_attribute_name (a);
 	  const attribute_spec *as = lookup_attribute_spec (name);
 	  if (as && as->affects_type_identity
-	      /* Skip internal-only attributes, which are distinguished from
-		 others by having a space.  At present, all internal-only
-		 attributes that affect type identity are target-specific
-		 and are handled by targetm.mangle_type instead.  */
-	      && !strchr (IDENTIFIER_POINTER (name), ' ')
 	      && !is_attribute_p ("transaction_safe", name)
 	      && !is_attribute_p ("abi_tag", name))
 	    vec.safe_push (a);