+;;; Moved here from generic/vm-tran.lisp to satisfy clisp
+;;;
+;;; FIXME: It would be good to implement SB!XC:DEFCONSTANT, and use
+;;; use that here, so that the compiler is born knowing this value.
+;;; FIXME: Add a comment telling whether this holds for all vectors
+;;; or only for vectors based on simple arrays (non-adjustable, etc.).
+(def!constant vector-data-bit-offset
+ (* sb!vm:vector-data-offset sb!vm:n-word-bits))
+