(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))))
(define-vop (list-or-list*)
(:args (things :more t))
(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)
+ (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)
(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)))
- (:temporary (:sc unsigned-reg :from :eval) temp)
- (:temporary (:sc unsigned-reg :from (:argument 0)) boxed)
- (:temporary (:sc unsigned-reg :from (:argument 1)) unboxed)
- (: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))
- (pseudo-atomic
- ;; comment from CMU CL code:
- ;; now loading code into static space cause it can't move
- ;;
- ;; KLUDGE: What? What's all the cruft about saving fixups for then?
- ;; I think what's happened is that ALLOCATE-CODE-OBJECT is the basic
- ;; CMU CL primitive; this ALLOCATE-CODE-OBJECT was hacked for
- ;; static space only in a simple-minded port to the X86; and then
- ;; in an attempt to improve the port to the X86,
- ;; ALLOCATE-DYNAMIC-CODE-OBJECT was defined. If that's right, I'd like
- ;; to know why not just go back to the basic CMU CL behavior of
- ;; ALLOCATE-CODE-OBJECT, where it makes a relocatable code object.
- ;; -- WHN 19990916
- ;;
- ;; FIXME: should have a check for overflow of static space
- (load-symbol-value temp *static-space-free-pointer*)
- (inst lea result (make-ea :byte :base temp :disp other-pointer-lowtag))
- (inst add temp boxed)
- (inst add temp unboxed)
- (store-symbol-value temp *static-space-free-pointer*)
- (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)
- (inst mov temp nil-value)
- (storew temp result code-entry-points-slot other-pointer-lowtag))
- (storew temp result code-debug-info-slot other-pointer-lowtag)))
-
-(define-vop (allocate-dynamic-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)
(define-vop (make-closure)
(:args (function :to :save :scs (descriptor-reg)))
- (:info length)
+ (:info length stack-allocate-p)
(:temporary (:sc any-reg) temp)
(:results (result :scs (descriptor-reg)))
(:node-var node)
(:generator 10
- (pseudo-atomic
- (let ((size (+ length closure-info-offset)))
- (allocation result (pad-data-block size) node)
- (inst lea result
- (make-ea :byte :base result :disp fun-pointer-lowtag))
- (storew (logior (ash (1- size) n-widetag-bits) closure-header-widetag)
- result 0 fun-pointer-lowtag))
+ (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))
+ (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)
(storew temp result closure-fun-slot fun-pointer-lowtag))))
(inst lea result (make-ea :byte :base result :disp lowtag))
(storew header result 0 lowtag))))
-(define-vop (make-symbol)
- (:policy :fast-safe)
- (:translate make-symbol)
- (:args (name :scs (descriptor-reg) :to :eval))
- (:temporary (:sc unsigned-reg :from :eval) temp)
- (:results (result :scs (descriptor-reg) :from :argument))
- (:node-var node)
- (:generator 37
- (with-fixed-allocation (result symbol-header-widetag symbol-size node)
- (storew name result symbol-name-slot other-pointer-lowtag)
- (storew unbound-marker-widetag
- result
- symbol-value-slot
- other-pointer-lowtag)
- ;; Set up a random hash value for the symbol. Perhaps the object
- ;; address could be used for even faster and smaller code!
- ;; FIXME: We don't mind the symbol hash not being repeatable, so
- ;; we might as well add in the object address here, too. (Adding entropy
- ;; is good, even if ANSI doesn't understand that.)
- (inst imul temp
- (make-fixup (extern-alien-name "fast_random_state") :foreign)
- 1103515245)
- (inst add temp 12345)
- (inst mov (make-fixup (extern-alien-name "fast_random_state") :foreign)
- temp)
- ;; We want a positive fixnum for the hash value, so discard the LS bits.
- ;;
- ;; FIXME: OK, who wants to tell me (CSR) why these two
- ;; instructions aren't replaced by (INST AND TEMP #x8FFFFFFC)?
- ;; Are the following two instructions actually faster? Does the
- ;; difference in behaviour really matter?
- (inst shr temp 1)
- (inst and temp #xfffffffc)
- (storew temp result symbol-hash-slot other-pointer-lowtag)
- (storew nil-value result symbol-plist-slot other-pointer-lowtag)
- (storew nil-value result symbol-package-slot other-pointer-lowtag))))
+
projects / sbcl.git / blobdiff