sb!vm:instance-header-widetag sb!vm:instance-pointer-lowtag
nil)
-(defoptimizer (%make-structure-instance stack-allocate-result) ((&rest args) node dx)
- (declare (ignore node dx))
+#!+stack-allocatable-fixed-objects
+(defoptimizer (%make-structure-instance stack-allocate-result) ((defstruct-description &rest args) node dx)
+ (aver (constant-lvar-p defstruct-description))
+ ;; A structure instance can be stack-allocated if it has no raw
+ ;; slots, or if we're on a target with a conservatively-scavenged
+ ;; stack. We have no reader conditional for stack conservation, but
+ ;; it turns out that the only time stack conservation is in play is
+ ;; when we're on GENCGC (since CHENEYGC doesn't have conservation)
+ ;; and C-STACK-IS-CONTROL-STACK (otherwise, the C stack is the
+ ;; number stack, and we precisely-scavenge the control stack).
+ #!-(and :gencgc :c-stack-is-control-stack)
+ (zerop (sb!kernel::dd-raw-length (lvar-value defstruct-description)))
+ #!+(and :gencgc :c-stack-is-control-stack)
t)
(defoptimizer ir2-convert-reffer ((object) node block name offset lowtag)
(macrolet ((make-case ()
`(ecase raw-type
((t)
- (vop set-slot node block object arg-tn
+ (vop init-slot node block object arg-tn
name (+ sb!vm:instance-slots-offset slot) lowtag))
,@(mapcar (lambda (rsd)
`(,(sb!kernel::raw-slot-data-raw-type rsd)
nil))))
(make-case))))
(:dd
- (vop set-slot node block object
+ (vop init-slot node block object
(emit-constant (sb!kernel::dd-layout-or-lose slot))
name sb!vm:instance-slots-offset lowtag))
(otherwise
- (vop set-slot node block object
+ (vop init-slot node block object
(ecase kind
(:arg
(aver args)
(emit-inits node block name result lowtag words `((:dd . ,c-dd) ,@c-slot-specs) args)
(move-lvar-result node block locs lvar))))
+(defoptimizer (initialize-vector ir2-convert)
+ ((vector &rest initial-contents) node block)
+ (let* ((vector-ctype (lvar-type vector))
+ (elt-ctype (if (array-type-p vector-ctype)
+ (array-type-specialized-element-type vector-ctype)
+ (bug "Unknow vector type in IR2 conversion for ~S."
+ 'initialize-vector)))
+ (saetp (find-saetp-by-ctype elt-ctype))
+ (lvar (node-lvar node))
+ (locs (lvar-result-tns lvar (list (primitive-type vector-ctype))))
+ (result (first locs))
+ (elt-ptype (primitive-type elt-ctype))
+ (tmp (make-normal-tn elt-ptype)))
+ (emit-move node block (lvar-tn node block vector) result)
+ (flet ((compute-setter ()
+ (macrolet
+ ((frob ()
+ (let ((*package* (find-package :sb!vm))
+ (clauses nil))
+ (map nil (lambda (s)
+ (when (sb!vm:saetp-specifier s)
+ (push
+ `(,(sb!vm:saetp-typecode s)
+ (lambda (index tn)
+ #!+(or x86 x86-64)
+ (vop ,(symbolicate "DATA-VECTOR-SET-WITH-OFFSET/"
+ (sb!vm:saetp-primitive-type-name s))
+ node block result index tn 0 tn)
+ #!-(or x86 x86-64)
+ (vop ,(symbolicate "DATA-VECTOR-SET/"
+ (sb!vm:saetp-primitive-type-name s))
+ node block result index tn tn)))
+ clauses)))
+ sb!vm:*specialized-array-element-type-properties*)
+ `(ecase (sb!vm:saetp-typecode saetp)
+ ,@(nreverse clauses)))))
+ (frob)))
+ (tnify (index)
+ (emit-constant index)))
+ (let ((setter (compute-setter))
+ (length (length initial-contents)))
+ (dotimes (i length)
+ (emit-move node block (lvar-tn node block (pop initial-contents)) tmp)
+ (funcall setter (tnify i) tmp))))
+ (move-lvar-result node block locs lvar)))
+
;;; :SET-TRANS (in objdef.lisp DEFINE-PRIMITIVE-OBJECT) doesn't quite
;;; cut it for symbols, where under certain compilation options
;;; (e.g. #!+SB-THREAD) we have to do something complicated, rather
node block (list value-tn) (node-lvar node))))))))
;;; Stack allocation optimizers per platform support
-;;;
-;;; Platforms with stack-allocatable vectors
-#!+(or mips x86 x86-64)
+#!+stack-allocatable-vectors
(progn
(defoptimizer (allocate-vector stack-allocate-result)
((type length words) node dx)
- (or (eq dx :truly)
- (zerop (policy node safety))
- ;; a vector object should fit in one page -- otherwise it might go past
- ;; stack guard pages.
- (values-subtypep (lvar-derived-type words)
- (load-time-value
- (specifier-type `(integer 0 ,(- (/ sb!vm::*backend-page-bytes*
- sb!vm:n-word-bytes)
- sb!vm:vector-data-offset)))))))
+ (and
+ ;; Can't put unboxed data on the stack unless we scavenge it
+ ;; conservatively.
+ #!-c-stack-is-control-stack
+ (constant-lvar-p type)
+ #!-c-stack-is-control-stack
+ (member (lvar-value type)
+ '#.(list (sb!vm:saetp-typecode (find-saetp 't))
+ (sb!vm:saetp-typecode (find-saetp 'fixnum))))
+ (or (eq dx :always-dynamic)
+ (zerop (policy node safety))
+ ;; a vector object should fit in one page -- otherwise it might go past
+ ;; stack guard pages.
+ (values-subtypep (lvar-derived-type words)
+ (load-time-value
+ (specifier-type `(integer 0 ,(- (/ sb!vm::*backend-page-bytes*
+ sb!vm:n-word-bytes)
+ sb!vm:vector-data-offset))))))))
(defoptimizer (allocate-vector ltn-annotate) ((type length words) call ltn-policy)
(let ((args (basic-combination-args call))
(annotate-1-value-lvar arg)))))
;;; ...lists
-#!+(or alpha mips ppc sparc x86 x86-64)
+#!+stack-allocatable-lists
(progn
(defoptimizer (list stack-allocate-result) ((&rest args) node dx)
- (declare (ignore node dx))
(not (null args)))
(defoptimizer (list* stack-allocate-result) ((&rest args) node dx)
- (declare (ignore node dx))
(not (null (rest args))))
(defoptimizer (%listify-rest-args stack-allocate-result) ((&rest args) node dx)
- (declare (ignore node dx))
t))
;;; ...conses
-#!+(or mips x86 x86-64)
-(defoptimizer (cons stack-allocate-result) ((&rest args) node dx)
- (declare (ignore node dx))
- t)
+#!+stack-allocatable-fixed-objects
+(progn
+ (defoptimizer (cons stack-allocate-result) ((&rest args) node dx)
+ t)
+ (defoptimizer (%make-complex stack-allocate-result) ((&rest args) node dx)
+ t))
projects / sbcl.git / blobdiff