- (unless (= start bignum-widetag)
- (inst cmp temp start)
- (inst b :lt when-false))
- ;; FIXME: conceivably, it might be worth having a
- ;; (MAX <widetags>) here too.
- (inst cmp temp end)
- (if last
- (inst b (if not-p :gt :le) target)
- (inst b :le when-true)))))))
+ (cond
+ ;; FIXME: this doesn't catch the {0x2 0x6 0xA 0xE}
+ ;; group
+ ;;
+ ;; also FIXME: exuberant cut'n'paste between
+ ;; backends
+ ((and last (not (= start bignum-widetag))
+ (= (+ start 4) end)
+ (= (logcount (logxor start end)) 1))
+ (inst and temp temp (ldb (byte 8 0) (logeqv start end)))
+ (inst cmp temp (ldb (byte 8 0) (logand start end)))
+ (inst b (if not-p :ne :eq) target))
+ ((and (not last) (null (cddr remaining))
+ (= (+ start 4) end) (= (logcount (logxor start end)) 1)
+ (listp (cadr remaining))
+ (= (+ (caadr remaining) 4) (cdadr remaining))
+ (= (logcount (logxor (caadr remaining) (cdadr remaining))) 1)
+ (= (logcount (logxor (caadr remaining) start)) 1))
+ (inst and temp temp (ldb (byte 8 0) (logeqv start (cdadr remaining))))
+ (inst cmp temp (ldb (byte 8 0) (logand start (cdadr remaining))))
+ (inst b (if not-p :ne :eq) target)
+ (return))
+ (t
+ (unless (= start bignum-widetag)
+ (inst cmp temp start)
+ (if (= end complex-array-widetag)
+ (progn
+ (aver last)
+ (inst b (if not-p :lt :ge) target))
+ (inst b :lt when-false)))
+ (unless (= end complex-array-widetag)
+ (inst cmp temp end)
+ (if last
+ (inst b (if not-p :gt :le) target)
+ (inst b :le when-true))))))))))