#define FOR_ALL_BB_FN(BB, FN) \
for (BB = ENTRY_BLOCK_PTR_FOR_FUNCTION (FN); BB; BB = BB->next_bb)
-/* Special labels found during CFG build. */
-
-extern GTY(()) rtx label_value_list;
-
extern bitmap_obstack reg_obstack;
/* Indexed by n, gives number of basic block that (REG n) is used in.