(flushable movable))
(defknown deport (alien alien-type) t
(flushable movable))
-(defknown extract-alien-value (system-area-pointer index alien-type) t
+(defknown extract-alien-value (system-area-pointer unsigned-byte alien-type) t
(flushable))
-(defknown deposit-alien-value (system-area-pointer index alien-type t) t
+(defknown deposit-alien-value (system-area-pointer unsigned-byte alien-type t) t
())
(defknown alien-funcall (alien-value &rest *) *
(count-low-order-zeros (lvar-value thing))
(count-low-order-zeros (lvar-uses thing))))
(combination
- (case (lvar-fun-name (combination-fun thing))
+ (case (let ((name (lvar-fun-name (combination-fun thing))))
+ (or (modular-version-info name) name))
((+ -)
(let ((min most-positive-fixnum)
(itype (specifier-type 'integer)))
(do ((result 0 (1+ result))
(num thing (ash num -1)))
((logbitp 0 num) result))))
+ (cast
+ (count-low-order-zeros (cast-value thing)))
(t
0)))
(deftransform / ((numerator denominator) (integer integer))
+ "convert x/2^k to shift"
(unless (constant-lvar-p denominator)
(give-up-ir1-transform))
(let* ((denominator (lvar-value denominator))
(bits (1- (integer-length denominator))))
- (unless (= (ash 1 bits) denominator)
+ (unless (and (> denominator 0) (= (ash 1 bits) denominator))
(give-up-ir1-transform))
(let ((alignment (count-low-order-zeros numerator)))
(unless (>= alignment bits)
(deftransform ash ((value amount))
(let ((value-node (lvar-uses value)))
- (unless (and (combination-p value-node)
- (eq (lvar-fun-name (combination-fun value-node))
- 'ash))
+ (unless (combination-p value-node)
(give-up-ir1-transform))
- (let ((inside-args (combination-args value-node)))
- (unless (= (length inside-args) 2)
- (give-up-ir1-transform))
- (let ((inside-amount (second inside-args)))
- (unless (and (constant-lvar-p inside-amount)
- (not (minusp (lvar-value inside-amount))))
- (give-up-ir1-transform)))))
- (extract-fun-args value 'ash 2)
- '(lambda (value amount1 amount2)
- (ash value (+ amount1 amount2))))
+ (let ((inside-fun-name (lvar-fun-name (combination-fun value-node))))
+ (multiple-value-bind (prototype width)
+ (modular-version-info inside-fun-name)
+ (unless (eq (or prototype inside-fun-name) 'ash)
+ (give-up-ir1-transform))
+ (when (and width (not (constant-lvar-p amount)))
+ (give-up-ir1-transform))
+ (let ((inside-args (combination-args value-node)))
+ (unless (= (length inside-args) 2)
+ (give-up-ir1-transform))
+ (let ((inside-amount (second inside-args)))
+ (unless (and (constant-lvar-p inside-amount)
+ (not (minusp (lvar-value inside-amount))))
+ (give-up-ir1-transform)))
+ (extract-fun-args value inside-fun-name 2)
+ (if width
+ `(lambda (value amount1 amount2)
+ (logand (ash value (+ amount1 amount2))
+ ,(1- (ash 1 (+ width (lvar-value amount))))))
+ `(lambda (value amount1 amount2)
+ (ash value (+ amount1 amount2)))))))))
\f
;;;; ALIEN-FUNCALL support