\f
;;;; utilities for optimizing array operations
-;;; Return UPGRADED-ARRAY-ELEMENT-TYPE for CONTINUATION, or do
+;;; Return UPGRADED-ARRAY-ELEMENT-TYPE for LVAR, or do
;;; GIVE-UP-IR1-TRANSFORM if the upgraded element type can't be
;;; determined.
-(defun upgraded-element-type-specifier-or-give-up (continuation)
- (let* ((element-ctype (extract-upgraded-element-type continuation))
+(defun upgraded-element-type-specifier-or-give-up (lvar)
+ (let* ((element-ctype (extract-upgraded-element-type lvar))
(element-type-specifier (type-specifier element-ctype)))
(if (eq element-type-specifier '*)
(give-up-ir1-transform
;;; Array access functions return an object from the array, hence its
;;; type is going to be the array upgraded element type.
(defun extract-upgraded-element-type (array)
- (let ((type (continuation-type array)))
+ (let ((type (lvar-type array)))
;; Note that this IF mightn't be satisfied even if the runtime
;; value is known to be a subtype of some specialized ARRAY, because
;; we can have values declared e.g. (AND SIMPLE-VECTOR UNKNOWN-TYPE),
*wild-type*)))
(defun extract-declared-element-type (array)
- (let ((type (continuation-type array)))
+ (let ((type (lvar-type array)))
(if (array-type-p type)
(array-type-element-type type)
*wild-type*)))
;;; return type is going to be the same as the new-value for SETF
;;; functions.
(defun assert-new-value-type (new-value array)
- (let ((type (continuation-type array)))
+ (let ((type (lvar-type array)))
(when (array-type-p type)
- (assert-continuation-type
+ (assert-lvar-type
new-value
(array-type-specialized-element-type type)
- (lexenv-policy (node-lexenv (continuation-dest new-value))))))
- (continuation-type new-value))
+ (lexenv-policy (node-lexenv (lvar-dest new-value))))))
+ (lvar-type new-value))
(defun assert-array-complex (array)
- (assert-continuation-type
+ (assert-lvar-type
array
(make-array-type :complexp t
:element-type *wild-type*)
- (lexenv-policy (node-lexenv (continuation-dest array))))
+ (lexenv-policy (node-lexenv (lvar-dest array))))
nil)
-;;; Return true if ARG is NIL, or is a constant-continuation whose
+;;; Return true if ARG is NIL, or is a constant-lvar whose
;;; value is NIL, false otherwise.
(defun unsupplied-or-nil (arg)
- (declare (type (or continuation null) arg))
+ (declare (type (or lvar null) arg))
(or (not arg)
- (and (constant-continuation-p arg)
- (not (continuation-value arg)))))
+ (and (constant-lvar-p arg)
+ (not (lvar-value arg)))))
\f
;;;; DERIVE-TYPE optimizers
;;; Array operations that use a specific number of indices implicitly
;;; assert that the array is of that rank.
(defun assert-array-rank (array rank)
- (assert-continuation-type
+ (assert-lvar-type
array
(specifier-type `(array * ,(make-list rank :initial-element '*)))
- (lexenv-policy (node-lexenv (continuation-dest array)))))
+ (lexenv-policy (node-lexenv (lvar-dest array)))))
(defoptimizer (array-in-bounds-p derive-type) ((array &rest indices))
(assert-array-rank array (length indices))
(defoptimizer (aref derive-type) ((array &rest indices) node)
(assert-array-rank array (length indices))
- ;; If the node continuation has a single use then assert its type.
- (let ((cont (node-cont node)))
- (when (= (length (find-uses cont)) 1)
- (assert-continuation-type cont (extract-upgraded-element-type array)
- (lexenv-policy (node-lexenv node)))))
(extract-upgraded-element-type array))
(defoptimizer (%aset derive-type) ((array &rest stuff))
;;; Figure out the type of the data vector if we know the argument
;;; element type.
(defoptimizer (%with-array-data derive-type) ((array start end))
- (let ((atype (continuation-type array)))
+ (let ((atype (lvar-type array)))
(when (array-type-p atype)
(specifier-type
`(simple-array ,(type-specifier
(or (careful-specifier-type
`(,(if simple 'simple-array 'array)
,(cond ((not element-type) t)
- ((constant-continuation-p element-type)
+ ((constant-lvar-p element-type)
(let ((ctype (careful-specifier-type
- (continuation-value element-type))))
+ (lvar-value element-type))))
(cond
((or (null ctype) (unknown-type-p ctype)) '*)
(t (sb!xc:upgraded-array-element-type
- (continuation-value element-type))))))
+ (lvar-value element-type))))))
(t
'*))
- ,(cond ((constant-continuation-p dims)
- (let* ((val (continuation-value dims))
+ ,(cond ((constant-lvar-p dims)
+ (let* ((val (lvar-value dims))
(cdims (if (listp val) val (list val))))
(if simple
cdims
(length cdims))))
- ((csubtypep (continuation-type dims)
+ ((csubtypep (lvar-type dims)
(specifier-type 'integer))
'(*))
(t
(when (null initial-element)
(give-up-ir1-transform))
(let* ((eltype (cond ((not element-type) t)
- ((not (constant-continuation-p element-type))
+ ((not (constant-lvar-p element-type))
(give-up-ir1-transform
"ELEMENT-TYPE is not constant."))
(t
- (continuation-value element-type))))
+ (lvar-value element-type))))
(eltype-type (ir1-transform-specifier-type eltype))
(saetp (find-if (lambda (saetp)
(csubtypep eltype-type (sb!vm:saetp-ctype saetp)))
(unless saetp
(give-up-ir1-transform "ELEMENT-TYPE not found in *SAETP*: ~S" eltype))
- (cond ((and (constant-continuation-p initial-element)
- (eql (continuation-value initial-element)
+ (cond ((and (constant-lvar-p initial-element)
+ (eql (lvar-value initial-element)
(sb!vm:saetp-initial-element-default saetp)))
creation-form)
(t
;; error checking for target, disabled on the host because
;; (CTYPE-OF #\Null) is not possible.
#-sb-xc-host
- (when (constant-continuation-p initial-element)
- (let ((value (continuation-value initial-element)))
+ (when (constant-lvar-p initial-element)
+ (let ((value (lvar-value initial-element)))
(cond
((not (ctypep value (sb!vm:saetp-ctype saetp)))
;; this case will cause an error at runtime, so we'd
(deftransform make-array ((length &key element-type)
(integer &rest *))
(let* ((eltype (cond ((not element-type) t)
- ((not (constant-continuation-p element-type))
+ ((not (constant-lvar-p element-type))
(give-up-ir1-transform
"ELEMENT-TYPE is not constant."))
(t
- (continuation-value element-type))))
- (len (if (constant-continuation-p length)
- (continuation-value length)
+ (lvar-value element-type))))
+ (len (if (constant-lvar-p length)
+ (lvar-value length)
'*))
(eltype-type (ir1-transform-specifier-type eltype))
(result-type-spec
;;; CSR, 2002-07-01
(deftransform make-array ((dims &key element-type)
(list &rest *))
- (unless (or (null element-type) (constant-continuation-p element-type))
+ (unless (or (null element-type) (constant-lvar-p element-type))
(give-up-ir1-transform
"The element-type is not constant; cannot open code array creation."))
- (unless (constant-continuation-p dims)
+ (unless (constant-lvar-p dims)
(give-up-ir1-transform
"The dimension list is not constant; cannot open code array creation."))
- (let ((dims (continuation-value dims)))
+ (let ((dims (lvar-value dims)))
(unless (every #'integerp dims)
(give-up-ir1-transform
"The dimension list contains something other than an integer: ~S"
(rank (length dims))
(spec `(simple-array
,(cond ((null element-type) t)
- ((and (constant-continuation-p element-type)
+ ((and (constant-lvar-p element-type)
(ir1-transform-specifier-type
- (continuation-value element-type)))
+ (lvar-value element-type)))
(sb!xc:upgraded-array-element-type
- (continuation-value element-type)))
+ (lvar-value element-type)))
(t '*))
,(make-list rank :initial-element '*))))
`(let ((header (make-array-header sb!vm:simple-array-widetag ,rank)))
;;; Transforms for various array properties. If the property is know
;;; at compile time because of a type spec, use that constant value.
+;;; Most of this logic may end up belonging in code/late-type.lisp;
+;;; however, here we also need the -OR-GIVE-UP for the transforms, and
+;;; maybe this is just too sloppy for actual type logic. -- CSR,
+;;; 2004-02-18
+(defun array-type-dimensions-or-give-up (type)
+ (typecase type
+ (array-type (array-type-dimensions type))
+ (union-type
+ (let ((types (union-type-types type)))
+ ;; there are at least two types, right?
+ (aver (> (length types) 1))
+ (let ((result (array-type-dimensions-or-give-up (car types))))
+ (dolist (type (cdr types) result)
+ (unless (equal (array-type-dimensions-or-give-up type) result)
+ (give-up-ir1-transform))))))
+ ;; FIXME: intersection type [e.g. (and (array * (*)) (satisfies foo)) ]
+ (t (give-up-ir1-transform))))
+
+(defun conservative-array-type-complexp (type)
+ (typecase type
+ (array-type (array-type-complexp type))
+ (union-type
+ (let ((types (union-type-types type)))
+ (aver (> (length types) 1))
+ (let ((result (conservative-array-type-complexp (car types))))
+ (dolist (type (cdr types) result)
+ (unless (eq (conservative-array-type-complexp type) result)
+ (return-from conservative-array-type-complexp :maybe))))))
+ ;; FIXME: intersection type
+ (t :maybe)))
+
;;; If we can tell the rank from the type info, use it instead.
(deftransform array-rank ((array))
- (let ((array-type (continuation-type array)))
- (unless (array-type-p array-type)
- (give-up-ir1-transform))
- (let ((dims (array-type-dimensions array-type)))
+ (let ((array-type (lvar-type array)))
+ (let ((dims (array-type-dimensions-or-give-up array-type)))
(if (not (listp dims))
(give-up-ir1-transform
"The array rank is not known at compile time: ~S"
;;; (if it's simple and a vector).
(deftransform array-dimension ((array axis)
(array index))
- (unless (constant-continuation-p axis)
+ (unless (constant-lvar-p axis)
(give-up-ir1-transform "The axis is not constant."))
- (let ((array-type (continuation-type array))
- (axis (continuation-value axis)))
- (unless (array-type-p array-type)
- (give-up-ir1-transform))
- (let ((dims (array-type-dimensions array-type)))
+ (let ((array-type (lvar-type array))
+ (axis (lvar-value axis)))
+ (let ((dims (array-type-dimensions-or-give-up array-type)))
(unless (listp dims)
(give-up-ir1-transform
"The array dimensions are unknown; must call ARRAY-DIMENSION at runtime."))
(cond ((integerp dim)
dim)
((= (length dims) 1)
- (ecase (array-type-complexp array-type)
+ (ecase (conservative-array-type-complexp array-type)
((t)
'(%array-dimension array 0))
((nil)
;;; If the length has been declared and it's simple, just return it.
(deftransform length ((vector)
((simple-array * (*))))
- (let ((type (continuation-type vector)))
- (unless (array-type-p type)
- (give-up-ir1-transform))
- (let ((dims (array-type-dimensions type)))
+ (let ((type (lvar-type vector)))
+ (let ((dims (array-type-dimensions-or-give-up type)))
(unless (and (listp dims) (integerp (car dims)))
(give-up-ir1-transform
"Vector length is unknown, must call LENGTH at runtime."))
;;; If a simple array with known dimensions, then VECTOR-LENGTH is a
;;; compile-time constant.
(deftransform vector-length ((vector))
- (let ((vtype (continuation-type vector)))
- (if (and (array-type-p vtype)
- (not (array-type-complexp vtype)))
- (let ((dim (first (array-type-dimensions vtype))))
- (when (eq dim '*) (give-up-ir1-transform))
- dim)
- (give-up-ir1-transform))))
+ (let ((vtype (lvar-type vector)))
+ (let ((dim (first (array-type-dimensions-or-give-up vtype))))
+ (when (eq dim '*)
+ (give-up-ir1-transform))
+ (when (conservative-array-type-complexp vtype)
+ (give-up-ir1-transform))
+ dim)))
;;; Again, if we can tell the results from the type, just use it.
;;; Otherwise, if we know the rank, convert into a computation based
;;; INDEX.
(deftransform array-total-size ((array)
(array))
- (let ((array-type (continuation-type array)))
- (unless (array-type-p array-type)
- (give-up-ir1-transform))
- (let ((dims (array-type-dimensions array-type)))
+ (let ((array-type (lvar-type array)))
+ (let ((dims (array-type-dimensions-or-give-up array-type)))
(unless (listp dims)
(give-up-ir1-transform "can't tell the rank at compile time"))
(if (member '* dims)
;;; Only complex vectors have fill pointers.
(deftransform array-has-fill-pointer-p ((array))
- (let ((array-type (continuation-type array)))
- (unless (array-type-p array-type)
- (give-up-ir1-transform))
- (let ((dims (array-type-dimensions array-type)))
+ (let ((array-type (lvar-type array)))
+ (let ((dims (array-type-dimensions-or-give-up array-type)))
(if (and (listp dims) (not (= (length dims) 1)))
nil
- (ecase (array-type-complexp array-type)
+ (ecase (conservative-array-type-complexp array-type)
((t)
t)
((nil)
(deftransform %check-bound ((array dimension index) * * :node node)
(cond ((policy node (and (> speed safety) (= safety 0)))
'index)
- ((not (constant-continuation-p dimension))
+ ((not (constant-lvar-p dimension))
(give-up-ir1-transform))
(t
- (let ((dim (continuation-value dimension)))
+ (let ((dim (lvar-value dimension)))
`(the (integer 0 (,dim)) index)))))
\f
;;;; WITH-ARRAY-DATA
\f
;;; Pick off some constant cases.
(defoptimizer (array-header-p derive-type) ((array))
- (let ((type (continuation-type array)))
+ (let ((type (lvar-type array)))
(cond ((not (array-type-p type))
+ ;; FIXME: use analogue of ARRAY-TYPE-DIMENSIONS-OR-GIVE-UP
nil)
(t
(let ((dims (array-type-dimensions type)))
projects / sbcl.git / blobdiff