X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fcompiler%2Fx86-64%2Falloc.lisp;h=dfcf4bfb7923d53e60e0b317dd104c37b4fd57dc;hb=6822034325136cde4e14773c83c3769b42721306;hp=707a4590aebbf1249196d9e3fe4f6fc51730f1f9;hpb=43b1750ede8767928788b158399d3c5d2910855a;p=sbcl.git diff --git a/src/compiler/x86-64/alloc.lisp b/src/compiler/x86-64/alloc.lisp index 707a459..dfcf4bf 100644 --- a/src/compiler/x86-64/alloc.lisp +++ b/src/compiler/x86-64/alloc.lisp @@ -11,12 +11,7 @@ (in-package "SB!VM") -;;;; 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) @@ -42,13 +37,12 @@ (move temp ,tn) temp)))) (storew reg ,list ,slot list-pointer-lowtag)))) - (let ((cons-cells (if star (1- num) num))) - (pseudo-atomic + (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 - (awhen (sb!c::node-lvar node) - (sb!c::lvar-dynamic-extent it))) - (inst lea res - (make-ea :byte :base res :disp list-pointer-lowtag)) + stack-allocate-p list-pointer-lowtag) (move ptr res) (dotimes (i (1- cons-cells)) (store-car (tn-ref-tn things) ptr) @@ -96,7 +90,7 @@ (storew length result vector-length-slot other-pointer-lowtag)))) (define-vop (allocate-vector-on-stack) - (:args (type :scs (unsigned-reg immediate)) + (: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) @@ -110,63 +104,23 @@ (:policy :fast-safe) (:node-var node) (:generator 100 - (when (sc-is type immediate) - (aver (typep (tn-value type) '(unsigned-byte 8)))) - (let ((unboxed-elements-p (and (sc-is type immediate) - (/= (tn-value type) - simple-vector-widetag)))) - (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) - (unless unboxed-elements-p - (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) - (unless unboxed-elements-p - (zeroize 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)))) + (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))) + (storew type result 0 other-pointer-lowtag) + (storew length result vector-length-slot other-pointer-lowtag) + (zeroize zero) + (inst rep) + (inst stos zero))) (in-package "SB!VM") @@ -220,9 +174,8 @@ (:generator 10 (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)) + (allocation result (pad-data-block size) node 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) @@ -232,10 +185,11 @@ (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) + (result value-cell-header-widetag value-cell-size node stack-allocate-p) (storew value result value-cell-value-slot other-pointer-lowtag)))) ;;;; automatic allocators for primitive objects @@ -254,14 +208,13 @@ (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)) + (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