+;;; FIXME: This variable is motivated by Gerd Moellman's observation,
+;;; in <867kga1wra.fsf@gerd.free-bsd.org> on cmucl-imp 2002-10-22,
+;;; that the functions returned from EMIT-xxx-FUNCTION can cause an
+;;; order-of-magnitude slowdown. We include this variable for now,
+;;; but maybe its effect should rather be controlled by compilation
+;;; policy if there is a noticeable space difference between the
+;;; branches, or else maybe the EMIT-xxx-FUNCTION branches should be
+;;; deleted. It's not clear to me how all of this works, though, so
+;;; until proper benchmarks are done it's probably safest simply to
+;;; have this pseudo-constant to hide code. -- CSR, 2003-02-14
+(defvar *optimize-cache-functions-p* t)
+