(:node-var node)
(:generator 0
(cond ((zerop num)
- ;; (move result nil-value)
- (inst mov result nil-value))
- ((and star (= num 1))
- (move result (tn-ref-tn things)))
- (t
- (macrolet
- ((store-car (tn list &optional (slot cons-car-slot))
- `(let ((reg
- (sc-case ,tn
- ((any-reg descriptor-reg) ,tn)
- ((control-stack)
- (move temp ,tn)
- temp))))
- (storew reg ,list ,slot list-pointer-lowtag))))
- (let ((cons-cells (if star (1- num) num)))
- (pseudo-atomic
- (allocation res (* (pad-data-block cons-size) cons-cells) node
+ ;; (move result nil-value)
+ (inst mov result nil-value))
+ ((and star (= num 1))
+ (move result (tn-ref-tn things)))
+ (t
+ (macrolet
+ ((store-car (tn list &optional (slot cons-car-slot))
+ `(let ((reg
+ (sc-case ,tn
+ ((any-reg descriptor-reg) ,tn)
+ ((control-stack)
+ (move temp ,tn)
+ temp))))
+ (storew reg ,list ,slot list-pointer-lowtag))))
+ (let ((cons-cells (if star (1- num) num)))
+ (pseudo-atomic
+ (allocation res (* (pad-data-block cons-size) cons-cells) node
(awhen (sb!c::node-lvar node) (sb!c::lvar-dynamic-extent it)))
- (inst lea res
- (make-ea :byte :base res :disp list-pointer-lowtag))
- (move ptr res)
- (dotimes (i (1- cons-cells))
- (store-car (tn-ref-tn things) ptr)
- (setf things (tn-ref-across things))
- (inst add ptr (pad-data-block cons-size))
- (storew ptr ptr (- cons-cdr-slot cons-size)
- list-pointer-lowtag))
- (store-car (tn-ref-tn things) ptr)
- (cond (star
- (setf things (tn-ref-across things))
- (store-car (tn-ref-tn things) ptr cons-cdr-slot))
- (t
- (storew nil-value ptr cons-cdr-slot
- list-pointer-lowtag)))
- (aver (null (tn-ref-across things)))))
- (move result res))))))
+ (inst lea res
+ (make-ea :byte :base res :disp list-pointer-lowtag))
+ (move ptr res)
+ (dotimes (i (1- cons-cells))
+ (store-car (tn-ref-tn things) ptr)
+ (setf things (tn-ref-across things))
+ (inst add ptr (pad-data-block cons-size))
+ (storew ptr ptr (- cons-cdr-slot cons-size)
+ list-pointer-lowtag))
+ (store-car (tn-ref-tn things) ptr)
+ (cond (star
+ (setf things (tn-ref-across things))
+ (store-car (tn-ref-tn things) ptr cons-cdr-slot))
+ (t
+ (storew nil-value ptr cons-cdr-slot
+ list-pointer-lowtag)))
+ (aver (null (tn-ref-across things)))))
+ (move result res))))))
(define-vop (list list-or-list*)
(:variant nil))
\f
;;;; special-purpose inline allocators
+;;; ALLOCATE-VECTOR
+(define-vop (allocate-vector-on-heap)
+ (:args (type :scs (unsigned-reg))
+ (length :scs (any-reg))
+ (words :scs (any-reg)))
+ (:results (result :scs (descriptor-reg) :from :load))
+ (:arg-types positive-fixnum
+ positive-fixnum
+ positive-fixnum)
+ (:policy :fast-safe)
+ (:generator 100
+ (inst lea result (make-ea :byte :base words :disp
+ (+ (1- (ash 1 n-lowtag-bits))
+ (* vector-data-offset n-word-bytes))))
+ (inst and result (lognot lowtag-mask))
+ (pseudo-atomic
+ (allocation result result)
+ (inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))
+ (storew type result 0 other-pointer-lowtag)
+ (storew length result vector-length-slot other-pointer-lowtag))))
+
+(define-vop (allocate-vector-on-stack)
+ (:args (type :scs (unsigned-reg))
+ (length :scs (any-reg))
+ (words :scs (any-reg) :target ecx))
+ (:temporary (:sc any-reg :offset ecx-offset :from (:argument 2)) ecx)
+ (:temporary (:sc any-reg :offset eax-offset :from (:argument 2)) zero)
+ (:temporary (:sc any-reg :offset edi-offset :from (:argument 0)) res)
+ (:results (result :scs (descriptor-reg) :from :load))
+ (:arg-types positive-fixnum
+ positive-fixnum
+ positive-fixnum)
+ (:translate allocate-vector)
+ (:policy :fast-safe)
+ (:node-var node)
+ (:generator 100
+ (inst lea result (make-ea :byte :base words :disp
+ (+ (1- (ash 1 n-lowtag-bits))
+ (* vector-data-offset n-word-bytes))))
+ (inst and result (lognot lowtag-mask))
+ ;; FIXME: It would be good to check for stack overflow here.
+ (move ecx words)
+ (inst shr ecx n-fixnum-tag-bits)
+ (allocation result result node t)
+ (inst cld)
+ (inst lea res
+ (make-ea :byte :base result :disp (* vector-data-offset n-word-bytes)))
+ (inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))
+ (storew type result 0 other-pointer-lowtag)
+ (storew length result vector-length-slot other-pointer-lowtag)
+ (inst xor zero zero)
+ (inst rep)
+ (inst stos zero)))
+
+(in-package "SB!C")
+
+(defoptimizer (allocate-vector stack-allocate-result)
+ ((type length words) node)
+ (ecase (policy node stack-allocate-vector)
+ (0 nil)
+ ((1 2)
+ ;; a vector object should fit in one page
+ (values-subtypep (lvar-derived-type words)
+ (load-time-value
+ (specifier-type `(integer 0 ,(- (/ sb!vm::*backend-page-size*
+ sb!vm:n-word-bytes)
+ sb!vm:vector-data-offset))))))
+ (3 t)))
+
+(defoptimizer (allocate-vector ltn-annotate) ((type length words) call ltn-policy)
+ (let ((args (basic-combination-args call))
+ (template (template-or-lose (if (awhen (node-lvar call)
+ (lvar-dynamic-extent it))
+ 'sb!vm::allocate-vector-on-stack
+ 'sb!vm::allocate-vector-on-heap))))
+ (dolist (arg args)
+ (setf (lvar-info arg)
+ (make-ir2-lvar (primitive-type (lvar-type arg)))))
+ (unless (is-ok-template-use template call (ltn-policy-safe-p ltn-policy))
+ (ltn-default-call call)
+ (return-from allocate-vector-ltn-annotate-optimizer (values)))
+ (setf (basic-combination-info call) template)
+ (setf (node-tail-p call) nil)
+
+ (dolist (arg args)
+ (annotate-1-value-lvar arg))))
+
+(in-package "SB!VM")
+
+;;;
(define-vop (allocate-code-object)
(:args (boxed-arg :scs (any-reg) :target boxed)
- (unboxed-arg :scs (any-reg) :target unboxed))
+ (unboxed-arg :scs (any-reg) :target unboxed))
(:results (result :scs (descriptor-reg) :from :eval))
(:temporary (:sc unsigned-reg :from (:argument 0)) boxed)
(:temporary (:sc unsigned-reg :from (:argument 1)) unboxed)
(storew name result fdefn-name-slot other-pointer-lowtag)
(storew nil-value result fdefn-fun-slot other-pointer-lowtag)
(storew (make-fixup "undefined_tramp" :foreign)
- result fdefn-raw-addr-slot other-pointer-lowtag))))
+ result fdefn-raw-addr-slot other-pointer-lowtag))))
(define-vop (make-closure)
(:args (function :to :save :scs (descriptor-reg)))
(:node-var node)
(:generator 10
(with-fixed-allocation
- (result value-cell-header-widetag value-cell-size node))
- (storew value result value-cell-value-slot other-pointer-lowtag)))
+ (result value-cell-header-widetag value-cell-size node)
+ (storew value result value-cell-value-slot other-pointer-lowtag))))
\f
;;;; automatic allocators for primitive objects
(:generator 1
(inst mov result unbound-marker-widetag)))
+(define-vop (make-funcallable-instance-tramp)
+ (:args)
+ (:results (result :scs (any-reg)))
+ (:generator 1
+ (inst lea result (make-fixup "funcallable_instance_tramp" :foreign))))
+
(define-vop (fixed-alloc)
(:args)
(:info name words type lowtag)
(:results (result :scs (descriptor-reg)))
(:node-var node)
(:generator 50
- (pseudo-atomic
- (allocation result (pad-data-block words) node)
- (inst lea result (make-ea :byte :base result :disp lowtag))
- (when type
- (storew (logior (ash (1- words) n-widetag-bits) type)
- result
- 0
- lowtag)))))
+ ;; We special case the allocation of conses, because they're
+ ;; extremely common and because the pseudo-atomic sequence on x86
+ ;; is relatively heavyweight. However, if the user asks for top
+ ;; speed, we accomodate him. The primary reason that we don't
+ ;; also check for (< SPEED SPACE) is because we want the space
+ ;; savings that these out-of-line allocation routines bring whilst
+ ;; compiling SBCL itself. --njf, 2006-07-08
+ (if (and (= lowtag list-pointer-lowtag) (policy node (< speed 3)))
+ (let ((dst
+ #.(loop for offset in *dword-regs*
+ collect `(,offset
+ ',(intern (format nil "ALLOCATE-CONS-TO-~A"
+ (svref *dword-register-names*
+ offset)))) into cases
+ finally (return `(case (tn-offset result)
+ ,@cases)))))
+ (aver (null type))
+ (inst call (make-fixup dst :assembly-routine)))
+ (pseudo-atomic
+ (allocation result (pad-data-block words) node)
+ (inst lea result (make-ea :byte :base result :disp lowtag))
+ (when type
+ (storew (logior (ash (1- words) n-widetag-bits) type)
+ result
+ 0
+ lowtag))))))
(define-vop (var-alloc)
(:args (extra :scs (any-reg)))
(:node-var node)
(:generator 50
(inst lea bytes
- (make-ea :dword :base extra :disp (* (1+ words) n-word-bytes)))
+ (make-ea :dword :base extra :disp (* (1+ words) n-word-bytes)))
(inst mov header bytes)
(inst shl header (- n-widetag-bits 2)) ; w+1 to length field
- (inst lea header ; (w-1 << 8) | type
- (make-ea :dword :base header :disp (+ (ash -2 n-widetag-bits) type)))
+ (inst lea header ; (w-1 << 8) | type
+ (make-ea :dword :base header :disp (+ (ash -2 n-widetag-bits) type)))
(inst and bytes (lognot lowtag-mask))
(pseudo-atomic
(allocation result bytes node)
(inst lea result (make-ea :byte :base result :disp lowtag))
(storew header result 0 lowtag))))
-
-
projects / sbcl.git / blobdiff