- (%test-lowtag value when-false t lowtag :temp temp)
- (load-type temp value (- lowtag))
- (do ((remaining headers (cdr remaining)))
- ((null remaining))
- (let ((header (car remaining))
- (last (null (cdr remaining))))
- (cond
- ((atom header)
- (inst cmp temp header)
- (if last
- ;; FIXME: Some SPARC-V9 magic might not go amiss
- ;; here, too, if I can figure out what it should
- ;; be.
- (inst b (if not-p :ne :eq) target)
- (inst b :eq when-true)))
- (t
- (let ((start (car header))
- (end (cdr header)))
- ;; FIXME: BIGNUM-WIDETAG here actually means (MIN
- ;; <widetags>).
- (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)))))))
- (inst nop)
- (emit-label drop-through)))))
+ (%test-lowtag value when-false t lowtag :temp temp)
+ (load-type temp value (- lowtag))
+ (do ((remaining headers (cdr remaining)))
+ ((null remaining))
+ (let ((header (car remaining))
+ (last (null (cdr remaining))))
+ (cond
+ ((atom header)
+ (cond
+ ((and (not last) (null (cddr remaining))
+ (atom (cadr remaining))
+ (= (logcount (logxor header (cadr remaining))) 1))
+ (inst and temp temp (ldb (byte 8 0) (logeqv header (cadr remaining))))
+ (inst cmp temp (ldb (byte 8 0) (logand header (cadr remaining))))
+ (inst b (if not-p :ne :eq) target)
+ (return))
+ (t
+ (inst cmp temp header)
+ (if last
+ ;; FIXME: Some SPARC-V9 magic might not go amiss
+ ;; here, too, if I can figure out what it should
+ ;; be.
+ (inst b (if not-p :ne :eq) target)
+ (inst b :eq when-true)))))
+ (t
+ (let ((start (car header))
+ (end (cdr header)))
+ ;; FIXME: BIGNUM-WIDETAG here actually means (MIN
+ ;; <widetags>).
+ (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))))))))))
+ (inst nop)
+ (emit-label drop-through)))))