(or end length)
(sequence-bounding-indices-bad-error vector start end)))))
-(defun specialized-list-seek-function-name (function-name key-functions variant)
+(deftype eq-comparable-type ()
+ '(or fixnum (not number)))
+
+;;; True if EQL comparisons involving type can be simplified to EQ.
+(defun eq-comparable-type-p (type)
+ (csubtypep type (specifier-type 'eq-comparable-type)))
+
+(defun specialized-list-seek-function-name (function-name key-functions &optional variant)
(or (find-symbol (with-output-to-string (s)
;; Write "%NAME-FUN1-FUN2-FUN3", etc. Not only is
;; this ever so slightly faster then FORMAT, this
(defun transform-list-item-seek (name item list key test test-not node)
;; If TEST is EQL, drop it.
- (when (and test (lvar-for-named-function test 'eql))
+ (when (and test (lvar-fun-is test '(eql)))
(setf test nil))
;; Ditto for KEY IDENTITY.
- (when (and key (lvar-for-named-function key 'identity))
+ (when (and key (lvar-fun-is key '(identity)))
(setf key nil))
;; Key can legally be NIL, but if it's NIL for sure we pretend it's
;; not there at all. If it might be NIL, make up a form to that
(%coerce-callable-to-fun key)
#'identity)))
(t
- (values key '(%coerce-callable-to-fun key))))))
- (let* ((c-test (cond ((and test (lvar-for-named-function test 'eq))
+ (values key (ensure-lvar-fun-form key 'key))))))
+ (let* ((c-test (cond ((and test (lvar-fun-is test '(eq)))
(setf test nil)
'eq)
((and (not test) (not test-not))
(when (eq-comparable-type-p (lvar-type item))
'eq))))
- (funs (remove nil (list (and key 'key) (cond (test 'test)
- (test-not 'test-not)))))
+ (funs (delete nil (list (when key (list key 'key))
+ (when test (list test 'test))
+ (when test-not (list test-not 'test-not)))))
(target-expr (if key '(%funcall key target) 'target))
(test-expr (cond (test `(%funcall test item ,target-expr))
(test-not `(not (%funcall test-not item ,target-expr)))
(when tail
`(if (let ((this ',(car tail)))
,(ecase name
- (assoc
- `(and this (let ((target (car this)))
- ,test-expr)))
+ ((assoc rassoc)
+ (let ((cxx (if (eq name 'assoc) 'car 'cdr)))
+ `(and this (let ((target (,cxx this)))
+ ,test-expr))))
(member
`(let ((target this))
,test-expr))))
',(ecase name
- (assoc (car tail))
+ ((assoc rassoc) (car tail))
(member tail))
,(open-code (cdr tail)))))
- (ensure-fun (fun)
- (if (eq 'key fun)
+ (ensure-fun (args)
+ (if (eq 'key (second args))
key-form
- `(%coerce-callable-to-fun ,fun))))
+ (apply #'ensure-lvar-fun-form args))))
(let* ((cp (constant-lvar-p list))
(c-list (when cp (lvar-value list))))
- (cond ((and cp c-list (member name '(assoc member))
+ (cond ((and cp c-list (member name '(assoc rassoc member))
(policy node (>= speed space)))
- `(let ,(mapcar (lambda (fun) `(,fun ,(ensure-fun fun))) funs)
+ `(let ,(mapcar (lambda (fun) `(,(second fun) ,(ensure-fun fun))) funs)
,(open-code c-list)))
((and cp (not c-list))
;; constant nil list
nil))
(t
;; specialized out-of-line version
- `(,(specialized-list-seek-function-name name funs c-test)
+ `(,(specialized-list-seek-function-name name (mapcar #'second funs) c-test)
item list ,@(mapcar #'ensure-fun funs)))))))))
-(deftransform member ((item list &key key test test-not) * * :node node)
- (transform-list-item-seek 'member item list key test test-not node))
-
-(deftransform assoc ((item list &key key test test-not) * * :node node)
- (transform-list-item-seek 'assoc item list key test test-not node))
-
-(deftransform adjoin ((item list &key key test test-not) * * :node node)
- (transform-list-item-seek 'adjoin item list key test test-not node))
+(defun transform-list-pred-seek (name pred list key node)
+ ;; If KEY is IDENTITY, drop it.
+ (when (and key (lvar-fun-is key '(identity)))
+ (setf key nil))
+ ;; Key can legally be NIL, but if it's NIL for sure we pretend it's
+ ;; not there at all. If it might be NIL, make up a form to that
+ ;; ensures it is a function.
+ (multiple-value-bind (key key-form)
+ (when key
+ (let ((key-type (lvar-type key))
+ (null-type (specifier-type 'null)))
+ (cond ((csubtypep key-type null-type)
+ (values nil nil))
+ ((csubtypep null-type key-type)
+ (values key '(if key
+ (%coerce-callable-to-fun key)
+ #'identity)))
+ (t
+ (values key (ensure-lvar-fun-form key 'key))))))
+ (let ((test-expr `(%funcall pred ,(if key '(%funcall key target) 'target)))
+ (pred-expr (ensure-lvar-fun-form pred 'pred)))
+ (when (member name '(member-if-not assoc-if-not rassoc-if-not))
+ (setf test-expr `(not ,test-expr)))
+ (labels ((open-code (tail)
+ (when tail
+ `(if (let ((this ',(car tail)))
+ ,(ecase name
+ ((assoc-if assoc-if-not rassoc-if rassoc-if-not)
+ (let ((cxx (if (member name '(assoc-if assoc-if-not)) 'car 'cdr)))
+ `(and this (let ((target (,cxx this)))
+ ,test-expr))))
+ ((member-if member-if-not)
+ `(let ((target this))
+ ,test-expr))))
+ ',(ecase name
+ ((assoc-if assoc-if-not rassoc-if rassoc-if-not)
+ (car tail))
+ ((member-if member-if-not)
+ tail))
+ ,(open-code (cdr tail))))))
+ (let* ((cp (constant-lvar-p list))
+ (c-list (when cp (lvar-value list))))
+ (cond ((and cp c-list (policy node (>= speed space)))
+ `(let ((pred ,pred-expr)
+ ,@(when key `((key ,key-form))))
+ ,(open-code c-list)))
+ ((and cp (not c-list))
+ ;; constant nil list -- nothing to find!
+ nil)
+ (t
+ ;; specialized out-of-line version
+ `(,(specialized-list-seek-function-name name (when key '(key)))
+ ,pred-expr list ,@(when key (list key-form))))))))))
+
+(macrolet ((def (name &optional if/if-not)
+ (let ((basic (symbolicate "%" name))
+ (basic-eq (symbolicate "%" name "-EQ"))
+ (basic-key (symbolicate "%" name "-KEY"))
+ (basic-key-eq (symbolicate "%" name "-KEY-EQ")))
+ `(progn
+ (deftransform ,name ((item list &key key test test-not) * * :node node)
+ (transform-list-item-seek ',name item list key test test-not node))
+ (deftransform ,basic ((item list) (eq-comparable-type t))
+ `(,',basic-eq item list))
+ (deftransform ,basic-key ((item list) (eq-comparable-type t))
+ `(,',basic-key-eq item list))
+ ,@(when if/if-not
+ (let ((if-name (symbolicate name "-IF"))
+ (if-not-name (symbolicate name "-IF-NOT")))
+ `((deftransform ,if-name ((pred list &key key) * * :node node)
+ (transform-list-pred-seek ',if-name pred list key node))
+ (deftransform ,if-not-name ((pred list &key key) * * :node node)
+ (transform-list-pred-seek ',if-not-name pred list key node)))))))))
+ (def adjoin)
+ (def assoc t)
+ (def member t)
+ (def rassoc t))
(deftransform memq ((item list) (t (constant-arg list)))
(labels ((rec (tail)
:start start
:end (%check-generic-sequence-bounds seq start end)))
\f
-;;;; utilities
-
-;;; Return true if LVAR's only use is a non-NOTINLINE reference to a
-;;; global function with one of the specified NAMES.
-(defun lvar-fun-is (lvar names)
- (declare (type lvar lvar) (list names))
- (let ((use (lvar-uses lvar)))
- (and (ref-p use)
- (let ((leaf (ref-leaf use)))
- (and (global-var-p leaf)
- (eq (global-var-kind leaf) :global-function)
- (not (null (member (leaf-source-name leaf) names
- :test #'equal))))))))
-
-;;; If LVAR is a constant lvar, the return the constant value. If it
-;;; is null, then return default, otherwise quietly give up the IR1
-;;; transform.
-;;;
-;;; ### Probably should take an ARG and flame using the NAME.
-(defun constant-value-or-lose (lvar &optional default)
- (declare (type (or lvar null) lvar))
- (cond ((not lvar) default)
- ((constant-lvar-p lvar)
- (lvar-value lvar))
- (t
- (give-up-ir1-transform))))
-
-
;;;; hairy sequence transforms
;;; FIXME: no hairy sequence transforms in SBCL?
(,sequence-type1 ,sequence-type2 &rest t)
,sequence-type1
:node node)
- ,(cond
- ((and saetp (valid-bit-bash-saetp-p saetp)) nil)
- ;; If the sequence types are different, SEQ1 and SEQ2 must
- ;; be distinct arrays, and we can open code the copy loop.
- ((not (eql sequence-type1 sequence-type2)) nil)
- ;; If we're not bit-bashing, only allow cases where we
- ;; can determine the order of copying up front. (There
- ;; are actually more cases we can handle if we know the
- ;; amount that we're copying, but this handles the
- ;; common cases.)
- (t '(unless (= (constant-value-or-lose start1 0)
- (constant-value-or-lose start2 0))
- (give-up-ir1-transform))))
`(let* ((len1 (length seq1))
(len2 (length seq2))
(end1 (or end1 len1))
(end2 (or end2 len2))
- (replace-len1 (- end1 start1))
- (replace-len2 (- end2 start2)))
+ (replace-len (min (- end1 start1) (- end2 start2))))
,(unless (policy node (= safety 0))
`(progn
- (unless (<= 0 start1 end1 len1)
- (sequence-bounding-indices-bad-error seq1 start1 end1))
- (unless (<= 0 start2 end2 len2)
- (sequence-bounding-indices-bad-error seq2 start2 end2))))
+ (unless (<= 0 start1 end1 len1)
+ (sequence-bounding-indices-bad-error seq1 start1 end1))
+ (unless (<= 0 start2 end2 len2)
+ (sequence-bounding-indices-bad-error seq2 start2 end2))))
,',(cond
- ((and saetp (valid-bit-bash-saetp-p saetp))
- (let* ((n-element-bits (sb!vm:saetp-n-bits saetp))
- (bash-function (intern (format nil "UB~D-BASH-COPY"
- n-element-bits)
- (find-package "SB!KERNEL"))))
- `(funcall (function ,bash-function) seq2 start2
- seq1 start1 (min replace-len1 replace-len2))))
- (t
- ;; We can expand the loop inline here because we
- ;; would have given up the transform (see above)
- ;; if we didn't have constant matching start
- ;; indices.
- '(do ((i start1 (1+ i))
- (j start2 (1+ j))
- (end (+ start1
- (min replace-len1 replace-len2))))
- ((>= i end))
- (declare (optimize (insert-array-bounds-checks 0)))
- (setf (aref seq1 i) (aref seq2 j)))))
+ ((and saetp (valid-bit-bash-saetp-p saetp))
+ (let* ((n-element-bits (sb!vm:saetp-n-bits saetp))
+ (bash-function (intern (format nil "UB~D-BASH-COPY"
+ n-element-bits)
+ (find-package "SB!KERNEL"))))
+ `(funcall (function ,bash-function) seq2 start2
+ seq1 start1 replace-len)))
+ (t
+ `(if (and
+ ;; If the sequence types are different, SEQ1 and
+ ;; SEQ2 must be distinct arrays.
+ ,(eql sequence-type1 sequence-type2)
+ (eq seq1 seq2) (> start1 start2))
+ (do ((i (truly-the index (+ start1 replace-len -1))
+ (1- i))
+ (j (truly-the index (+ start2 replace-len -1))
+ (1- j)))
+ ((< i start1))
+ (declare (optimize (insert-array-bounds-checks 0)))
+ (setf (aref seq1 i) (aref seq2 j)))
+ (do ((i start1 (1+ i))
+ (j start2 (1+ j))
+ (end (+ start1 replace-len)))
+ ((>= i end))
+ (declare (optimize (insert-array-bounds-checks 0)))
+ (setf (aref seq1 i) (aref seq2 j))))))
seq1))))
(macrolet
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