Hi,
while looking on the stats of types of nodes streamed into global stream I
notied
that we stream all label decls globally. This is quite obvious omision and we
need to keep indexable only those that can cross function boundary.
While doing so i also noticed special handling of IMPORTED_DECL that is
unnecesary.
I will send patches to drop its streaming incrementally.
Bootstrapped/regtested x86_64-linux, comitted.
Honza
* lto-streamer-out.c (tree_is_indexable): Make LABEL_DECL nonindexable
unless it is forced or nonlocal; assert that we stream no IMPORTED_DECL.
Index: lto-streamer-out.c
===================================================================
--- lto-streamer-out.c (revision 261885)
+++ lto-streamer-out.c (working copy)
@@ -134,9 +134,12 @@ tree_is_indexable (tree t)
if ((TREE_CODE (t) == PARM_DECL || TREE_CODE (t) == RESULT_DECL)
&& DECL_CONTEXT (t))
return variably_modified_type_p (TREE_TYPE (DECL_CONTEXT (t)), NULL_TREE);
- /* IMPORTED_DECL is put into BLOCK and thus it never can be shared. */
+ /* IMPORTED_DECL is put into BLOCK and thus it never can be shared.
+ We should no longer need to stream it. */
else if (TREE_CODE (t) == IMPORTED_DECL)
- return false;
+ gcc_unreachable ();
+ else if (TREE_CODE (t) == LABEL_DECL)
+ return FORCED_LABEL (t) || DECL_NONLOCAL (t);
else if (((VAR_P (t) && !TREE_STATIC (t))
|| TREE_CODE (t) == TYPE_DECL
|| TREE_CODE (t) == CONST_DECL
