-;;; FIXME I: this is currently called from DEFTRANSFORMs, the vast
-;;; majority of which are not going to transform the code, but instead
-;;; are going to GIVE-UP-IR1-TRANSFORM unconditionally. It would be
-;;; nice to make this explicit, maybe by implementing a new
-;;; "optimizer" (say, DEFOPTIMIZER CONSISTENCY-CHECK).
-;;;