(in-package "SB!VM")
\f
-;;;; LIST and LIST*
-(defoptimizer (list stack-allocate-result) ((&rest args))
- (not (null args)))
-(defoptimizer (list* stack-allocate-result) ((&rest args))
- (not (null (rest args))))
-
+;;;; CONS, LIST and LIST*
(define-vop (list-or-list*)
(:args (things :more t))
(:temporary (:sc unsigned-reg) ptr temp)
(: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
- (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))))))
+ ;; (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))
+ (stack-allocate-p (awhen (sb!c::node-lvar node)
+ (sb!c::lvar-dynamic-extent it))))
+ (maybe-pseudo-atomic stack-allocate-p
+ (allocation res (* (pad-data-block cons-size) cons-cells) node
+ stack-allocate-p 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
-(define-vop (allocate-code-object)
- (:args (boxed-arg :scs (any-reg) :target boxed)
- (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)
+;;; ALLOCATE-VECTOR
+(define-vop (allocate-vector-on-heap)
+ (:args (type :scs (unsigned-reg immediate))
+ (length :scs (any-reg immediate))
+ (words :scs (any-reg immediate)))
+ (:results (result :scs (descriptor-reg) :from :load))
+ (:arg-types positive-fixnum
+ positive-fixnum
+ positive-fixnum)
+ (:policy :fast-safe)
+ (:generator 100
+ (let ((size (sc-case words
+ (immediate
+ (logandc2 (+ (fixnumize (tn-value words))
+ (+ (1- (ash 1 n-lowtag-bits))
+ (* vector-data-offset n-word-bytes)))
+ lowtag-mask))
+ (t
+ (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))
+ result))))
+ (pseudo-atomic
+ (allocation result size)
+ (inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))
+ (sc-case type
+ (immediate
+ (aver (typep (tn-value type) '(unsigned-byte 8)))
+ (storeb (tn-value type) result 0 other-pointer-lowtag))
+ (t
+ (storew type result 0 other-pointer-lowtag)))
+ (sc-case length
+ (immediate
+ (let ((fixnum-length (fixnumize (tn-value length))))
+ (typecase fixnum-length
+ ((unsigned-byte 8)
+ (storeb fixnum-length result
+ vector-length-slot other-pointer-lowtag))
+ (t
+ (storew fixnum-length result
+ vector-length-slot other-pointer-lowtag)))))
+ (t
+ (storew length result vector-length-slot other-pointer-lowtag)))))))
+
+(define-vop (allocate-vector-on-stack)
+ (:args (type :scs (unsigned-reg immediate) :to :save)
+ (length :scs (any-reg) :to :eval :target zero)
+ (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 :eval) zero)
+ (:temporary (:sc any-reg :offset edi-offset) 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
- (move boxed boxed-arg)
- (inst add boxed (fixnumize (1+ code-trace-table-offset-slot)))
- (inst and boxed (lognot lowtag-mask))
- (move unboxed unboxed-arg)
- (inst shr unboxed word-shift)
- (inst add unboxed lowtag-mask)
- (inst and unboxed (lognot lowtag-mask))
- (inst mov result boxed)
- (inst add result unboxed)
- (pseudo-atomic
- (allocation result result node)
- (inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))
- (inst shl boxed (- n-widetag-bits word-shift))
- (inst or boxed code-header-widetag)
- (storew boxed result 0 other-pointer-lowtag)
- (storew unboxed result code-code-size-slot other-pointer-lowtag)
- (storew nil-value result code-entry-points-slot other-pointer-lowtag))
- (storew nil-value result code-debug-info-slot other-pointer-lowtag)))
+ (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 other-pointer-lowtag)
+ (inst cld)
+ (inst lea res
+ (make-ea :byte :base result :disp (- (* vector-data-offset n-word-bytes)
+ other-pointer-lowtag)))
+ (sc-case type
+ (immediate
+ (aver (typep (tn-value type) '(unsigned-byte 8)))
+ (storeb (tn-value type) result 0 other-pointer-lowtag))
+ (t
+ (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)))
+
\f
(define-vop (make-fdefn)
(:policy :fast-safe)
(with-fixed-allocation (result fdefn-widetag fdefn-size node)
(storew name result fdefn-name-slot other-pointer-lowtag)
(storew nil-value result fdefn-fun-slot other-pointer-lowtag)
- (storew (make-fixup (extern-alien-name "undefined_tramp") :foreign)
- result fdefn-raw-addr-slot other-pointer-lowtag))))
+ (storew (make-fixup "undefined_tramp" :foreign)
+ result fdefn-raw-addr-slot other-pointer-lowtag))))
(define-vop (make-closure)
(:args (function :to :save :scs (descriptor-reg)))
(maybe-pseudo-atomic stack-allocate-p
(let ((size (+ length closure-info-offset)))
(allocation result (pad-data-block size) node
- stack-allocate-p)
- (inst lea result
- (make-ea :byte :base result :disp fun-pointer-lowtag))
+ stack-allocate-p
+ fun-pointer-lowtag)
(storew (logior (ash (1- size) n-widetag-bits) closure-header-widetag)
result 0 fun-pointer-lowtag))
(loadw temp function closure-fun-slot fun-pointer-lowtag)
(define-vop (make-value-cell)
(:args (value :scs (descriptor-reg any-reg) :to :result))
(:results (result :scs (descriptor-reg) :from :eval))
+ (:info stack-allocate-p)
(: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 stack-allocate-p)
+ (storew value result value-cell-value-slot other-pointer-lowtag))))
\f
;;;; automatic allocators for primitive objects
(define-vop (make-unbound-marker)
(:args)
- (:results (result :scs (any-reg)))
+ (:results (result :scs (descriptor-reg any-reg)))
(: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)
+ (:info name words type lowtag stack-allocate-p)
(:ignore name)
(: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 (not stack-allocate-p)
+ (= lowtag list-pointer-lowtag) (policy node (< speed 3)))
+ (let ((dst
+ ;; FIXME: out-of-line dx-allocation
+ #.(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)))
+ (maybe-pseudo-atomic stack-allocate-p
+ (allocation result (pad-data-block words) node stack-allocate-p 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