(sb!xc:deftype simple-bit-vector (&optional size)
`(simple-array bit (,size)))
\f
-;;;; some private types that we use in defining the standard functions
+;;;; some private types that we use in defining the standard functions,
+;;;; or implementing declarations in standard compiler transforms
;;; a type specifier
(sb!xc:deftype type-specifier () '(or list symbol sb!xc:class))