+ ;; Note: CMU CL, and SBCL < 0.pre7.39, had FUN-POINTER-LOWTAG
+ ;; here. We swapped FUN-POINTER-LOWTAG and
+ ;; INSTANCE-POINTER-LOWTAG in sbcl-0.pre7.39 in order to help with a
+ ;; low-level pun in the function call sequence on the PPC port.
+ ;; For more information, see the PPC port code. -- WHN 2001-10-03
+ instance-pointer