(define-vop (fast-lognot/fixnum fixnum-unop)
(:translate lognot)
- (:generator 2
+ (:generator 1
(inst xor res x (fixnumize -1))))
(define-vop (fast-lognot/signed signed-unop)
(:translate lognot)
- (:generator 1
+ (:generator 2
(inst not res x)))
\f
;;;; Binary fixnum operations.
(define-vop (fast-fixnum-binop fast-safe-arith-op)
(:args (x :target r :scs (any-reg zero))
- (y :target r :scs (any-reg zero)))
+ (y :target r :scs (any-reg zero)))
(:arg-types tagged-num tagged-num)
(:results (r :scs (any-reg)))
(:result-types tagged-num)
(define-vop (fast-unsigned-binop fast-safe-arith-op)
(:args (x :target r :scs (unsigned-reg zero))
- (y :target r :scs (unsigned-reg zero)))
+ (y :target r :scs (unsigned-reg zero)))
(:arg-types unsigned-num unsigned-num)
(:results (r :scs (unsigned-reg)))
(:result-types unsigned-num)
(define-vop (fast-signed-binop fast-safe-arith-op)
(:args (x :target r :scs (signed-reg zero))
- (y :target r :scs (signed-reg zero)))
+ (y :target r :scs (signed-reg zero)))
(:arg-types signed-num signed-num)
(:results (r :scs (signed-reg)))
(:result-types signed-num)
(:args (x :target r :scs (any-reg zero)))
(:info y)
(:arg-types tagged-num
- (:constant (and (signed-byte 11) (not (integer 0 0)))))
+ (:constant (and (signed-byte 11) (not (integer 0 0)))))
(:results (r :scs (any-reg)))
(:result-types tagged-num)
(:note "inline fixnum arithmetic"))
(:args (x :target r :scs (unsigned-reg zero)))
(:info y)
(:arg-types unsigned-num
- (:constant (and (signed-byte 13) (not (integer 0 0)))))
+ (:constant (and (signed-byte 13) (not (integer 0 0)))))
(:results (r :scs (unsigned-reg)))
(:result-types unsigned-num)
(:note "inline (unsigned-byte 32) arithmetic"))
(:args (x :target r :scs (signed-reg zero)))
(:info y)
(:arg-types signed-num
- (:constant (and (signed-byte 13) (not (integer 0 0)))))
+ (:constant (and (signed-byte 13) (not (integer 0 0)))))
(:results (r :scs (signed-reg)))
(:result-types signed-num)
(:note "inline (signed-byte 32) arithmetic"))
(eval-when (:compile-toplevel :load-toplevel :execute)
(defmacro define-binop (translate untagged-penalty op
- &optional arg-swap restore-fixnum-mask)
+ &optional arg-swap restore-fixnum-mask)
`(progn
(define-vop (,(symbolicate 'fast translate '/fixnum=>fixnum)
- fast-fixnum-binop)
+ fast-fixnum-binop)
,@(when restore-fixnum-mask
- `((:temporary (:sc non-descriptor-reg) temp)))
+ `((:temporary (:sc non-descriptor-reg) temp)))
(:translate ,translate)
(:generator 2
- ,(if arg-swap
- `(inst ,op ,(if restore-fixnum-mask 'temp 'r) y x)
- `(inst ,op ,(if restore-fixnum-mask 'temp 'r) x y))
- ,@(when restore-fixnum-mask
- `((inst andn r temp fixnum-tag-mask)))))
+ ,(if arg-swap
+ `(inst ,op ,(if restore-fixnum-mask 'temp 'r) y x)
+ `(inst ,op ,(if restore-fixnum-mask 'temp 'r) x y))
+ ,@(when restore-fixnum-mask
+ `((inst andn r temp fixnum-tag-mask)))))
,@(unless arg-swap
- `((define-vop (,(symbolicate 'fast- translate '-c/fixnum=>fixnum)
- fast-fixnum-binop-c)
- ,@(when restore-fixnum-mask
- `((:temporary (:sc non-descriptor-reg) temp)))
- (:translate ,translate)
- (:generator 1
- (inst ,op ,(if restore-fixnum-mask 'temp 'r) x (fixnumize y))
- ,@(when restore-fixnum-mask
- `((inst andn r temp fixnum-tag-mask)))))))
+ `((define-vop (,(symbolicate 'fast- translate '-c/fixnum=>fixnum)
+ fast-fixnum-binop-c)
+ ,@(when restore-fixnum-mask
+ `((:temporary (:sc non-descriptor-reg) temp)))
+ (:translate ,translate)
+ (:generator 1
+ (inst ,op ,(if restore-fixnum-mask 'temp 'r) x (fixnumize y))
+ ,@(when restore-fixnum-mask
+ `((inst andn r temp fixnum-tag-mask)))))))
(define-vop (,(symbolicate 'fast- translate '/signed=>signed)
- fast-signed-binop)
+ fast-signed-binop)
(:translate ,translate)
(:generator ,(1+ untagged-penalty)
- ,(if arg-swap
- `(inst ,op r y x)
- `(inst ,op r x y))))
+ ,(if arg-swap
+ `(inst ,op r y x)
+ `(inst ,op r x y))))
,@(unless arg-swap
- `((define-vop (,(symbolicate 'fast- translate '-c/signed=>signed)
- fast-signed-binop-c)
- (:translate ,translate)
- (:generator ,untagged-penalty
- (inst ,op r x y)))))
+ `((define-vop (,(symbolicate 'fast- translate '-c/signed=>signed)
+ fast-signed-binop-c)
+ (:translate ,translate)
+ (:generator ,untagged-penalty
+ (inst ,op r x y)))))
(define-vop (,(symbolicate 'fast- translate '/unsigned=>unsigned)
- fast-unsigned-binop)
+ fast-unsigned-binop)
(:translate ,translate)
(:generator ,(1+ untagged-penalty)
- ,(if arg-swap
- `(inst ,op r y x)
- `(inst ,op r x y))))
+ ,(if arg-swap
+ `(inst ,op r y x)
+ `(inst ,op r x y))))
,@(unless arg-swap
- `((define-vop (,(symbolicate 'fast- translate '-c/unsigned=>unsigned)
- fast-unsigned-binop-c)
- (:translate ,translate)
- (:generator ,untagged-penalty
- (inst ,op r x y)))))))
+ `((define-vop (,(symbolicate 'fast- translate '-c/unsigned=>unsigned)
+ fast-unsigned-binop-c)
+ (:translate ,translate)
+ (:generator ,untagged-penalty
+ (inst ,op r x y)))))))
); eval-when
(define-binop logxor 2 xor)
(define-binop logeqv 2 xnor nil t)
+(define-vop (fast-logand/signed-unsigned=>unsigned fast-logand/unsigned=>unsigned)
+ (:args (x :scs (signed-reg) :target r)
+ (y :scs (unsigned-reg) :target r))
+ (:arg-types signed-num unsigned-num)
+ (:translate logand))
+
;;; Special case fixnum + and - that trap on overflow. Useful when we
;;; don't know that the output type is a fixnum.
(define-vop (fast-v8-truncate/fixnum=>fixnum fast-safe-arith-op)
(:translate truncate)
(:args (x :scs (any-reg))
- (y :scs (any-reg)))
+ (y :scs (any-reg)))
(:arg-types tagged-num tagged-num)
(:results (quo :scs (any-reg))
- (rem :scs (any-reg)))
+ (rem :scs (any-reg)))
(:result-types tagged-num tagged-num)
(:note "inline fixnum arithmetic")
(:temporary (:scs (any-reg) :target quo) q)
(:vop-var vop)
(:save-p :compute-only)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 12
(let ((zero (generate-error-code vop division-by-zero-error x y)))
(inst cmp y zero-tn)
(inst nop)
(inst nop)
- (inst sdiv q x y-int) ; Q is tagged.
+ (inst sdiv q x y-int) ; Q is tagged.
;; We have the quotient so we need to compute the remainder
- (inst smul r q y-int) ; R is tagged
+ (inst smul r q y-int) ; R is tagged
(inst sub rem x r)
(unless (location= quo q)
- (move quo q)))))
+ (move quo q)))))
(define-vop (fast-v8-truncate/signed=>signed fast-safe-arith-op)
(:translate truncate)
(:args (x :scs (signed-reg))
- (y :scs (signed-reg)))
+ (y :scs (signed-reg)))
(:arg-types signed-num signed-num)
(:results (quo :scs (signed-reg))
- (rem :scs (signed-reg)))
+ (rem :scs (signed-reg)))
(:result-types signed-num signed-num)
(:note "inline (signed-byte 32) arithmetic")
(:temporary (:scs (signed-reg) :target quo) q)
(:vop-var vop)
(:save-p :compute-only)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 12
(let ((zero (generate-error-code vop division-by-zero-error x y)))
(inst cmp y zero-tn)
(if (member :sparc-v9 *backend-subfeatures*)
- (inst b :eq zero :pn)
- (inst b :eq zero))
+ (inst b :eq zero :pn)
+ (inst b :eq zero))
;; Extend the sign of X into the Y register
(inst sra r x 31)
(inst wry r)
(inst sdiv q x y)
;; We have the quotient so we need to compue the remainder
- (inst smul r q y) ; rem
+ (inst smul r q y) ; rem
(inst sub rem x r)
(unless (location= quo q)
- (move quo q)))))
+ (move quo q)))))
(define-vop (fast-v8-truncate/unsigned=>unsigned fast-safe-arith-op)
(:translate truncate)
(:args (x :scs (unsigned-reg))
- (y :scs (unsigned-reg)))
+ (y :scs (unsigned-reg)))
(:arg-types unsigned-num unsigned-num)
(:results (quo :scs (unsigned-reg))
- (rem :scs (unsigned-reg)))
+ (rem :scs (unsigned-reg)))
(:result-types unsigned-num unsigned-num)
(:note "inline (unsigned-byte 32) arithmetic")
(:temporary (:scs (unsigned-reg) :target quo) q)
(:vop-var vop)
(:save-p :compute-only)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 8
(let ((zero (generate-error-code vop division-by-zero-error x y)))
(inst cmp y zero-tn)
(if (member :sparc-v9 *backend-subfeatures*)
- (inst b :eq zero :pn)
- (inst b :eq zero))
- (inst wry zero-tn) ; Clear out high part
+ (inst b :eq zero :pn)
+ (inst b :eq zero))
+ (inst wry zero-tn) ; Clear out high part
(inst nop)
(inst nop)
(inst nop)
-
+
(inst udiv q x y)
;; Compute remainder
(inst umul r q y)
(inst sub rem x r)
(unless (location= quo q)
- (inst move quo q)))))
+ (inst move quo q)))))
(define-vop (fast-v9-truncate/signed=>signed fast-safe-arith-op)
(:translate truncate)
(:args (x :scs (signed-reg))
- (y :scs (signed-reg)))
+ (y :scs (signed-reg)))
(:arg-types signed-num signed-num)
(:results (quo :scs (signed-reg))
- (rem :scs (signed-reg)))
+ (rem :scs (signed-reg)))
(:result-types signed-num signed-num)
(:note "inline (signed-byte 32) arithmetic")
(:temporary (:scs (signed-reg) :target quo) q)
(inst mulx r q y)
(inst sub rem x r)
(unless (location= quo q)
- (inst move quo q)))))
+ (inst move quo q)))))
(define-vop (fast-v9-truncate/unsigned=>unsigned fast-safe-arith-op)
(:translate truncate)
(:args (x :scs (unsigned-reg))
- (y :scs (unsigned-reg)))
+ (y :scs (unsigned-reg)))
(:arg-types unsigned-num unsigned-num)
(:results (quo :scs (unsigned-reg))
- (rem :scs (unsigned-reg)))
+ (rem :scs (unsigned-reg)))
(:result-types unsigned-num unsigned-num)
(:note "inline (unsigned-byte 32) arithmetic")
(:temporary (:scs (unsigned-reg) :target quo) q)
(inst mulx r q y)
(inst sub rem x r)
(unless (location= quo q)
- (inst move quo q)))))
+ (inst move quo q)))))
;;; Shifting
(define-vop (fast-ash/signed=>signed)
(:note "inline ASH")
(:args (number :scs (signed-reg) :to :save)
- (amount :scs (signed-reg immediate) :to :save))
+ (amount :scs (signed-reg) :to :save))
(:arg-types signed-num signed-num)
(:results (result :scs (signed-reg)))
(:result-types signed-num)
(:policy :fast-safe)
(:temporary (:sc non-descriptor-reg) ndesc)
(:generator 5
- (sc-case amount
- (signed-reg
- (let ((done (gen-label)))
- (inst cmp amount)
- (inst b :ge done)
- ;; The result-type assures us that this shift will not
- ;; overflow.
- (inst sll result number amount)
- (inst neg ndesc amount)
- (inst cmp ndesc 31)
- (if (member :sparc-v9 *backend-subfeatures*)
- (progn
- (inst cmove :ge ndesc 31)
- (inst sra result number ndesc))
- (progn
- (inst b :le done)
- (inst sra result number ndesc)
- (inst sra result number 31)))
- (emit-label done)))
- (immediate
- (bug "IMMEDIATE case in ASH VOP; should have been transformed")))))
+ (let ((done (gen-label)))
+ (inst cmp amount)
+ (inst b :ge done)
+ ;; The result-type assures us that this shift will not
+ ;; overflow.
+ (inst sll result number amount)
+ (inst neg ndesc amount)
+ (inst cmp ndesc 31)
+ (if (member :sparc-v9 *backend-subfeatures*)
+ (progn
+ (inst cmove :ge ndesc 31)
+ (inst sra result number ndesc))
+ (progn
+ (inst b :le done)
+ (inst sra result number ndesc)
+ (inst sra result number 31)))
+ (emit-label done))))
+
+(define-vop (fast-ash-c/signed=>signed)
+ (:note "inline constant ASH")
+ (:args (number :scs (signed-reg)))
+ (:info count)
+ (:arg-types signed-num (:constant integer))
+ (:results (result :scs (signed-reg)))
+ (:result-types signed-num)
+ (:translate ash)
+ (:policy :fast-safe)
+ (:generator 4
+ (cond
+ ((< count 0) (inst sra result number (min (- count) 31)))
+ ((> count 0) (inst sll result number (min count 31)))
+ (t (bug "identity ASH not transformed away")))))
(define-vop (fast-ash/unsigned=>unsigned)
(:note "inline ASH")
(:args (number :scs (unsigned-reg) :to :save)
- (amount :scs (signed-reg immediate) :to :save))
+ (amount :scs (signed-reg) :to :save))
(:arg-types unsigned-num signed-num)
(:results (result :scs (unsigned-reg)))
(:result-types unsigned-num)
(:policy :fast-safe)
(:temporary (:sc non-descriptor-reg) ndesc)
(:generator 5
- (sc-case amount
- (signed-reg
- (let ((done (gen-label)))
- (inst cmp amount)
- (inst b :ge done)
- ;; The result-type assures us that this shift will not
- ;; overflow.
- (inst sll result number amount)
- (inst neg ndesc amount)
- (inst cmp ndesc 32)
- (if (member :sparc-v9 *backend-subfeatures*)
- (progn
- (inst srl result number ndesc)
- (inst cmove :ge result zero-tn))
- (progn
- (inst b :lt done)
- (inst srl result number ndesc)
- (move result zero-tn)))
- (emit-label done)))
- (immediate
- (bug "IMMEDIATE case in ASH VOP; should have been transformed")))))
+ (let ((done (gen-label)))
+ (inst cmp amount)
+ (inst b :ge done)
+ ;; The result-type assures us that this shift will not
+ ;; overflow.
+ (inst sll result number amount)
+ (inst neg ndesc amount)
+ (inst cmp ndesc 32)
+ (if (member :sparc-v9 *backend-subfeatures*)
+ (progn
+ (inst srl result number ndesc)
+ (inst cmove :ge result zero-tn))
+ (progn
+ (inst b :lt done)
+ (inst srl result number ndesc)
+ (move result zero-tn)))
+ (emit-label done))))
+
+(define-vop (fast-ash-c/unsigned=>unsigned)
+ (:note "inline constant ASH")
+ (:args (number :scs (unsigned-reg)))
+ (:info count)
+ (:arg-types unsigned-num (:constant integer))
+ (:results (result :scs (unsigned-reg)))
+ (:result-types unsigned-num)
+ (:translate ash)
+ (:policy :fast-safe)
+ (:generator 4
+ (cond
+ ((< count -31) (move result zero-tn))
+ ((< count 0) (inst srl result number (min (- count) 31)))
+ ((> count 0) (inst sll result number (min count 31)))
+ (t (bug "identity ASH not transformed away")))))
;; Some special cases where we know we want a left shift. Just do the
;; shift, instead of checking for the sign of the shift.
(macrolet
- ((frob (name sc-type type result-type cost)
+ ((def (name sc-type type result-type cost)
`(define-vop (,name)
- (:note "inline ASH")
- (:translate ash)
- (:args (number :scs (,sc-type))
- (amount :scs (signed-reg unsigned-reg immediate)))
- (:arg-types ,type positive-fixnum)
- (:results (result :scs (,result-type)))
- (:result-types ,type)
- (:policy :fast-safe)
- (:generator ,cost
- ;; The result-type assures us that this shift will not
- ;; overflow. And for fixnums, the zero bits that get
- ;; shifted in are just fine for the fixnum tag.
- (sc-case amount
- ((signed-reg unsigned-reg)
- (inst sll result number amount))
- (immediate
- (let ((amount (tn-value amount)))
- (assert (>= amount 0))
- (inst sll result number amount))))))))
- (frob fast-ash-left/signed=>signed signed-reg signed-num signed-reg 3)
- (frob fast-ash-left/fixnum=>fixnum any-reg tagged-num any-reg 2)
- (frob fast-ash-left/unsigned=>unsigned unsigned-reg unsigned-num unsigned-reg 3))
-
-(defknown ash-right-signed ((signed-byte #.sb!vm:n-word-bits)
- (and fixnum unsigned-byte))
- (signed-byte #.sb!vm:n-word-bits)
- (movable foldable flushable))
-
-(defknown ash-right-unsigned ((unsigned-byte #.sb!vm:n-word-bits)
- (and fixnum unsigned-byte))
- (unsigned-byte #.sb!vm:n-word-bits)
- (movable foldable flushable))
-
-;; Some special cases where we want a right shift. Just do the shift.
-;; (Needs appropriate deftransforms to call these, though.)
-
-(macrolet
- ((frob (trans name sc-type type shift-inst cost)
- `(define-vop (,name)
- (:note "inline right ASH")
- (:translate ,trans)
- (:args (number :scs (,sc-type))
- (amount :scs (signed-reg unsigned-reg immediate)))
- (:arg-types ,type positive-fixnum)
- (:results (result :scs (,sc-type)))
- (:result-types ,type)
- (:policy :fast-safe)
- (:generator ,cost
- (sc-case amount
- ((signed-reg unsigned-reg)
- (inst ,shift-inst result number amount))
- (immediate
- (let ((amt (tn-value amount)))
- (inst ,shift-inst result number amt))))))))
- (frob ash-right-signed fast-ash-right/signed=>signed
- signed-reg signed-num sra 3)
- (frob ash-right-unsigned fast-ash-right/unsigned=>unsigned
- unsigned-reg unsigned-num srl 3))
-
-(define-vop (fast-ash-right/fixnum=>fixnum)
- (:note "inline right ASH")
- (:translate ash-right-signed)
- (:args (number :scs (any-reg))
- (amount :scs (signed-reg unsigned-reg immediate)))
- (:arg-types tagged-num positive-fixnum)
- (:results (result :scs (any-reg)))
- (:result-types tagged-num)
- (:temporary (:sc non-descriptor-reg :target result) temp)
- (:policy :fast-safe)
- (:generator 2
- ;; Shift the fixnum right by the desired amount. Then zap out the
- ;; 2 LSBs to make it a fixnum again. (Those bits are junk.)
- (sc-case amount
- ((signed-reg unsigned-reg)
- (inst sra temp number amount))
- (immediate
- (inst sra temp number (tn-value amount))))
- (inst andn result temp fixnum-tag-mask)))
-
-
+ (:note "inline ASH")
+ (:translate ash)
+ (:args (number :scs (,sc-type))
+ (amount :scs (signed-reg unsigned-reg immediate)))
+ (:arg-types ,type positive-fixnum)
+ (:results (result :scs (,result-type)))
+ (:result-types ,type)
+ (:policy :fast-safe)
+ (:generator ,cost
+ ;; The result-type assures us that this shift will not
+ ;; overflow. And for fixnums, the zero bits that get
+ ;; shifted in are just fine for the fixnum tag.
+ (sc-case amount
+ ((signed-reg unsigned-reg)
+ (inst sll result number amount))
+ (immediate
+ (let ((amount (tn-value amount)))
+ (aver (>= amount 0))
+ (inst sll result number amount))))))))
+ (def fast-ash-left/signed=>signed signed-reg signed-num signed-reg 3)
+ (def fast-ash-left/fixnum=>fixnum any-reg tagged-num any-reg 2)
+ (def fast-ash-left/unsigned=>unsigned unsigned-reg unsigned-num unsigned-reg 3))
\f
(define-vop (signed-byte-32-len)
(:temporary (:scs (non-descriptor-reg) :from (:argument 0)) shift)
(:generator 30
(let ((loop (gen-label))
- (test (gen-label)))
+ (test (gen-label)))
(inst addcc shift zero-tn arg)
(inst b :ge test)
(move res zero-tn)
(emit-label loop)
(inst add res (fixnumize 1))
-
+
(emit-label test)
(inst cmp shift)
(inst b :ne loop)
(move res arg)
(dolist (stuff '((1 #x55555555) (2 #x33333333) (4 #x0f0f0f0f)
- (8 #x00ff00ff) (16 #x0000ffff)))
- (destructuring-bind (shift bit-mask)
- stuff
- ;; Set mask
- (inst sethi mask (ldb (byte 22 10) bit-mask))
- (inst add mask (ldb (byte 10 0) bit-mask))
+ (8 #x00ff00ff) (16 #x0000ffff)))
+ (destructuring-bind (shift bit-mask)
+ stuff
+ ;; Set mask
+ (inst sethi mask (ldb (byte 22 10) bit-mask))
+ (inst add mask (ldb (byte 10 0) bit-mask))
- (inst and temp res mask)
- (inst srl res shift)
- (inst and res mask)
- (inst add res temp)))))
+ (inst and temp res mask)
+ (inst srl res shift)
+ (inst and res mask)
+ (inst add res temp)))))
;;; Multiply and Divide.
(:temporary (:scs (non-descriptor-reg)) temp)
(:translate *)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 2
;; The cost here should be less than the cost for
;; */signed=>signed. Why? A fixnum product using signed=>signed
(:args (x :target r :scs (any-reg zero)))
(:info y)
(:arg-types tagged-num
- (:constant (and (signed-byte 13) (not (integer 0 0)))))
+ (:constant (and (signed-byte 13) (not (integer 0 0)))))
(:results (r :scs (any-reg)))
(:result-types tagged-num)
(:note "inline fixnum arithmetic")
(:translate *)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 1
(inst smul r x y)))
(define-vop (fast-v8-*/signed=>signed fast-signed-binop)
(:translate *)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 3
(inst smul r x y)))
(define-vop (fast-v8-*-c/signed=>signed fast-signed-binop-c)
(:translate *)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 2
(inst smul r x y)))
-
+
(define-vop (fast-v8-*/unsigned=>unsigned fast-unsigned-binop)
(:translate *)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 3
(inst umul r x y)))
(define-vop (fast-v8-*-c/unsigned=>unsigned fast-unsigned-binop-c)
(:translate *)
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (and (member :sparc-v9 *backend-subfeatures*)
- (not (member :sparc-64 *backend-subfeatures*)))))
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 2
(inst umul r x y)))
\f
;;;; Modular functions:
-(define-modular-fun lognot-mod32 (x) lognot 32)
+(define-modular-fun lognot-mod32 (x) lognot :untagged nil 32)
(define-vop (lognot-mod32/unsigned=>unsigned)
(:translate lognot-mod32)
(:args (x :scs (unsigned-reg)))
((define-modular-backend (fun &optional constantp)
(let ((mfun-name (symbolicate fun '-mod32))
(modvop (symbolicate 'fast- fun '-mod32/unsigned=>unsigned))
- (modcvop (symbolicate 'fast- fun 'mod32-c/unsigned=>unsigned))
+ (modcvop (symbolicate 'fast- fun '-mod32-c/unsigned=>unsigned))
(vop (symbolicate 'fast- fun '/unsigned=>unsigned))
(cvop (symbolicate 'fast- fun '-c/unsigned=>unsigned)))
`(progn
- (define-modular-fun ,mfun-name (x y) ,fun 32)
+ (define-modular-fun ,mfun-name (x y) ,fun :untagged nil 32)
(define-vop (,modvop ,vop)
(:translate ,mfun-name))
- ,@(when constantp
- `((define-vop (,modcvop ,cvop)
- (:translate ,mfun-name))))))))
+ ,@(when constantp
+ `((define-vop (,modcvop ,cvop)
+ (:translate ,mfun-name))))))))
(define-modular-backend + t)
- (define-modular-backend logxor t)
+ (define-modular-backend - t)
(define-modular-backend logeqv t)
(define-modular-backend logandc1)
(define-modular-backend logandc2 t)
`(lognot (logand ,x ,y)))
(define-source-transform lognor (x y)
`(lognot (logior ,x ,y)))
+
+(define-vop (fast-ash-left-mod32-c/unsigned=>unsigned
+ fast-ash-c/unsigned=>unsigned)
+ (:translate ash-left-mod32))
+
+(define-vop (fast-ash-left-mod32/unsigned=>unsigned
+ fast-ash-left/unsigned=>unsigned))
+(deftransform ash-left-mod32 ((integer count)
+ ((unsigned-byte 32) (unsigned-byte 5)))
+ (when (sb!c::constant-lvar-p count)
+ (sb!c::give-up-ir1-transform))
+ '(%primitive fast-ash-left-mod32/unsigned=>unsigned integer count))
\f
;;;; Binary conditional VOPs:
(define-vop (fast-conditional/fixnum fast-conditional)
(:args (x :scs (any-reg zero))
- (y :scs (any-reg zero)))
+ (y :scs (any-reg zero)))
(:arg-types tagged-num tagged-num)
(:note "inline fixnum comparison"))
(define-vop (fast-conditional/signed fast-conditional)
(:args (x :scs (signed-reg zero))
- (y :scs (signed-reg zero)))
+ (y :scs (signed-reg zero)))
(:arg-types signed-num signed-num)
(:note "inline (signed-byte 32) comparison"))
(define-vop (fast-conditional/unsigned fast-conditional)
(:args (x :scs (unsigned-reg zero))
- (y :scs (unsigned-reg zero)))
+ (y :scs (unsigned-reg zero)))
(:arg-types unsigned-num unsigned-num)
(:note "inline (unsigned-byte 32) comparison"))
(defmacro define-conditional-vop (tran cond unsigned not-cond not-unsigned)
`(progn
,@(mapcar (lambda (suffix cost signed)
- (unless (and (member suffix '(/fixnum -c/fixnum))
- (eq tran 'eql))
- `(define-vop (,(intern (format nil "~:@(FAST-IF-~A~A~)"
- tran suffix))
- ,(intern
- (format nil "~:@(FAST-CONDITIONAL~A~)"
- suffix)))
- (:translate ,tran)
- (:generator ,cost
- (inst cmp x
- ,(if (eq suffix '-c/fixnum) '(fixnumize y) 'y))
- (inst b (if not-p
- ,(if signed not-cond not-unsigned)
- ,(if signed cond unsigned))
- target)
- (inst nop)))))
- '(/fixnum -c/fixnum /signed -c/signed /unsigned -c/unsigned)
- '(4 3 6 5 6 5)
- '(t t t t nil nil))))
+ (unless (and (member suffix '(/fixnum -c/fixnum))
+ (eq tran 'eql))
+ `(define-vop (,(intern (format nil "~:@(FAST-IF-~A~A~)"
+ tran suffix))
+ ,(intern
+ (format nil "~:@(FAST-CONDITIONAL~A~)"
+ suffix)))
+ (:translate ,tran)
+ (:generator ,cost
+ (inst cmp x
+ ,(if (eq suffix '-c/fixnum) '(fixnumize y) 'y))
+ (inst b (if not-p
+ ,(if signed not-cond not-unsigned)
+ ,(if signed cond unsigned))
+ target)
+ (inst nop)))))
+ '(/fixnum -c/fixnum /signed -c/signed /unsigned -c/unsigned)
+ '(4 3 6 5 6 5)
+ '(t t t t nil nil))))
(define-conditional-vop < :lt :ltu :ge :geu)
;;;
(define-vop (fast-eql/fixnum fast-conditional)
- (:args (x :scs (any-reg descriptor-reg zero))
- (y :scs (any-reg zero)))
+ (:args (x :scs (any-reg zero))
+ (y :scs (any-reg zero)))
(:arg-types tagged-num tagged-num)
(:note "inline fixnum comparison")
(:translate eql)
(inst nop)))
;;;
(define-vop (generic-eql/fixnum fast-eql/fixnum)
+ (:args (x :scs (any-reg descriptor-reg))
+ (y :scs (any-reg)))
(:arg-types * tagged-num)
(:variant-cost 7))
(define-vop (fast-eql-c/fixnum fast-conditional/fixnum)
- (:args (x :scs (any-reg descriptor-reg zero)))
+ (:args (x :scs (any-reg zero)))
(:arg-types tagged-num (:constant (signed-byte 11)))
(:info target not-p y)
(:translate eql)
(inst nop)))
;;;
(define-vop (generic-eql-c/fixnum fast-eql-c/fixnum)
+ (:args (x :scs (any-reg descriptor-reg)))
(:arg-types * (:constant (signed-byte 11)))
(:variant-cost 6))
\f
;;;; 32-bit logical operations
-(define-vop (merge-bits)
- (:translate merge-bits)
- (:args (shift :scs (signed-reg unsigned-reg))
- (prev :scs (unsigned-reg))
- (next :scs (unsigned-reg)))
- (:arg-types tagged-num unsigned-num unsigned-num)
- (:temporary (:scs (unsigned-reg) :to (:result 0)) temp)
- (:temporary (:scs (unsigned-reg) :to (:result 0) :target result) res)
- (:results (result :scs (unsigned-reg)))
- (:result-types unsigned-num)
- (:policy :fast-safe)
- (:generator 4
- (let ((done (gen-label)))
- (inst cmp shift)
- (inst b :eq done)
- (inst srl res next shift)
- (inst sub temp zero-tn shift)
- (inst sll temp prev temp)
- (inst or res temp)
- (emit-label done)
- (move result res))))
-
-(define-source-transform 32bit-logical-not (x)
- `(logand (lognot (the (unsigned-byte 32) ,x)) #.(1- (ash 1 32))))
-
-(deftransform 32bit-logical-and ((x y))
- '(logand x y))
-
-(deftransform 32bit-logical-nand ((x y))
- '(logand (lognand x y) #.(1- (ash 1 32))))
-
-(deftransform 32bit-logical-or ((x y))
- '(logior x y))
-
-(deftransform 32bit-logical-nor ((x y))
- '(logand (lognor x y) #.(1- (ash 1 32))))
-
-(deftransform 32bit-logical-xor ((x y))
- '(logxor x y))
-
-(deftransform 32bit-logical-eqv ((x y))
- '(logand (logeqv x y) #.(1- (ash 1 32))))
-
-(deftransform 32bit-logical-orc1 ((x y))
- '(logand (logorc1 x y) #.(1- (ash 1 32))))
-
-(deftransform 32bit-logical-orc2 ((x y))
- '(logand (logorc2 x y) #.(1- (ash 1 32))))
-
-(deftransform 32bit-logical-andc1 ((x y))
- '(logand (logandc1 x y) #.(1- (ash 1 32))))
-
-(deftransform 32bit-logical-andc2 ((x y))
- '(logand (logandc2 x y) #.(1- (ash 1 32))))
-
(define-vop (shift-towards-someplace)
(:policy :fast-safe)
(:args (num :scs (unsigned-reg))
- (amount :scs (signed-reg)))
+ (amount :scs (signed-reg)))
(:arg-types unsigned-num tagged-num)
(:results (r :scs (unsigned-reg)))
(:result-types unsigned-num))
(inst srl r num amount)))
\f
;;;; Bignum stuff.
-
(define-vop (bignum-length get-header-data)
- (:translate sb!bignum::%bignum-length)
+ (:translate sb!bignum:%bignum-length)
(:policy :fast-safe))
(define-vop (bignum-set-length set-header-data)
- (:translate sb!bignum::%bignum-set-length)
+ (:translate sb!bignum:%bignum-set-length)
(:policy :fast-safe))
(define-vop (bignum-ref word-index-ref)
(:variant bignum-digits-offset other-pointer-lowtag)
- (:translate sb!bignum::%bignum-ref)
+ (:translate sb!bignum:%bignum-ref)
(:results (value :scs (unsigned-reg)))
(:result-types unsigned-num))
(define-vop (bignum-set word-index-set)
(:variant bignum-digits-offset other-pointer-lowtag)
- (:translate sb!bignum::%bignum-set)
+ (:translate sb!bignum:%bignum-set)
(:args (object :scs (descriptor-reg))
- (index :scs (any-reg immediate zero))
- (value :scs (unsigned-reg)))
+ (index :scs (any-reg immediate zero))
+ (value :scs (unsigned-reg)))
(:arg-types t positive-fixnum unsigned-num)
(:results (result :scs (unsigned-reg)))
(:result-types unsigned-num))
(define-vop (digit-0-or-plus)
- (:translate sb!bignum::%digit-0-or-plusp)
+ (:translate sb!bignum:%digit-0-or-plusp)
(:policy :fast-safe)
(:args (digit :scs (unsigned-reg)))
(:arg-types unsigned-num)
(emit-label done))))
(define-vop (v9-digit-0-or-plus-cmove)
- (:translate sb!bignum::%digit-0-or-plusp)
+ (:translate sb!bignum:%digit-0-or-plusp)
(:policy :fast-safe)
(:args (digit :scs (unsigned-reg)))
(:arg-types unsigned-num)
;; This doesn't work?
#+nil
(define-vop (v9-digit-0-or-plus-movr)
- (:translate sb!bignum::%digit-0-or-plusp)
+ (:translate sb!bignum:%digit-0-or-plusp)
(:policy :fast-safe)
(:args (digit :scs (unsigned-reg)))
(:arg-types unsigned-num)
(inst movr result null-tn digit :lz)
(inst movr result temp digit :gez)))
-
(define-vop (add-w/carry)
- (:translate sb!bignum::%add-with-carry)
+ (:translate sb!bignum:%add-with-carry)
(:policy :fast-safe)
(:args (a :scs (unsigned-reg))
- (b :scs (unsigned-reg))
- (c :scs (any-reg)))
+ (b :scs (unsigned-reg))
+ (c :scs (any-reg)))
(:arg-types unsigned-num unsigned-num positive-fixnum)
(:results (result :scs (unsigned-reg))
- (carry :scs (unsigned-reg)))
+ (carry :scs (unsigned-reg)))
(:result-types unsigned-num positive-fixnum)
(:generator 3
(inst addcc zero-tn c -1)
(inst addx carry zero-tn zero-tn)))
(define-vop (sub-w/borrow)
- (:translate sb!bignum::%subtract-with-borrow)
+ (:translate sb!bignum:%subtract-with-borrow)
(:policy :fast-safe)
(:args (a :scs (unsigned-reg))
- (b :scs (unsigned-reg))
- (c :scs (any-reg)))
+ (b :scs (unsigned-reg))
+ (c :scs (any-reg)))
(:arg-types unsigned-num unsigned-num positive-fixnum)
(:results (result :scs (unsigned-reg))
- (borrow :scs (unsigned-reg)))
+ (borrow :scs (unsigned-reg)))
(:result-types unsigned-num positive-fixnum)
(:generator 4
(inst subcc zero-tn c 1)
;;; EMIT-MULTIPLY -- This is used both for bignum stuff and in assembly
;;; routines.
-;;;
+;;;
(defun emit-multiply (multiplier multiplicand result-high result-low)
"Emit code to multiply MULTIPLIER with MULTIPLICAND, putting the result
in RESULT-HIGH and RESULT-LOW. KIND is either :signed or :unsigned.
Note: the lifetimes of MULTIPLICAND and RESULT-HIGH overlap."
(declare (type tn multiplier result-high result-low)
- (type (or tn (signed-byte 13)) multiplicand))
+ (type (or tn (signed-byte 13)) multiplicand))
;; It seems that emit-multiply is only used to do an unsigned
;; multiply, so the code only does an unsigned multiply.
(cond
;; unsigned 64-bit numbers.
(inst srl multiplier 0)
(inst srl multiplicand 0)
-
+
;; Multiply the two numbers and put the result in
;; result-high. Copy the low 32-bits to result-low. Then
;; shift result-high so the high 32-bits end up in the low
(inst move result-low result-high)
(inst srax result-high 32))
((or (member :sparc-v8 *backend-subfeatures*)
- (member :sparc-v9 *backend-subfeatures*))
+ (member :sparc-v9 *backend-subfeatures*))
;; V8 has a multiply instruction. This should also work for
;; the V9, but umul and the Y register is deprecated on the
;; V9.
(inst nop)
(inst nop)
(dotimes (i 32)
- (inst mulscc result-high multiplicand))
+ (inst mulscc result-high multiplicand))
(inst mulscc result-high zero-tn)
(inst cmp multiplicand)
(inst b :ge label)
(inst rdy result-low)))))
(define-vop (bignum-mult-and-add-3-arg)
- (:translate sb!bignum::%multiply-and-add)
+ (:translate sb!bignum:%multiply-and-add)
(:policy :fast-safe)
(:args (x :scs (unsigned-reg) :to (:eval 1))
- (y :scs (unsigned-reg) :to (:eval 1))
- (carry-in :scs (unsigned-reg) :to (:eval 2)))
+ (y :scs (unsigned-reg) :to (:eval 1))
+ (carry-in :scs (unsigned-reg) :to (:eval 2)))
(:arg-types unsigned-num unsigned-num unsigned-num)
(:results (hi :scs (unsigned-reg) :from (:eval 0))
- (lo :scs (unsigned-reg) :from (:eval 1)))
+ (lo :scs (unsigned-reg) :from (:eval 1)))
(:result-types unsigned-num unsigned-num)
(:generator 40
(emit-multiply x y hi lo)
(inst addx hi zero-tn)))
(define-vop (bignum-mult-and-add-4-arg)
- (:translate sb!bignum::%multiply-and-add)
+ (:translate sb!bignum:%multiply-and-add)
(:policy :fast-safe)
(:args (x :scs (unsigned-reg) :to (:eval 1))
- (y :scs (unsigned-reg) :to (:eval 1))
- (prev :scs (unsigned-reg) :to (:eval 2))
- (carry-in :scs (unsigned-reg) :to (:eval 2)))
+ (y :scs (unsigned-reg) :to (:eval 1))
+ (prev :scs (unsigned-reg) :to (:eval 2))
+ (carry-in :scs (unsigned-reg) :to (:eval 2)))
(:arg-types unsigned-num unsigned-num unsigned-num unsigned-num)
(:results (hi :scs (unsigned-reg) :from (:eval 0))
- (lo :scs (unsigned-reg) :from (:eval 1)))
+ (lo :scs (unsigned-reg) :from (:eval 1)))
(:result-types unsigned-num unsigned-num)
(:generator 40
(emit-multiply x y hi lo)
(inst addx hi zero-tn)))
(define-vop (bignum-mult)
- (:translate sb!bignum::%multiply)
+ (:translate sb!bignum:%multiply)
(:policy :fast-safe)
(:args (x :scs (unsigned-reg) :to (:result 1))
- (y :scs (unsigned-reg) :to (:result 1)))
+ (y :scs (unsigned-reg) :to (:result 1)))
(:arg-types unsigned-num unsigned-num)
(:results (hi :scs (unsigned-reg))
- (lo :scs (unsigned-reg)))
+ (lo :scs (unsigned-reg)))
(:result-types unsigned-num unsigned-num)
(:generator 40
(emit-multiply x y hi lo)))
(define-vop (bignum-lognot lognot-mod32/unsigned=>unsigned)
- (:translate sb!bignum::%lognot))
+ (:translate sb!bignum:%lognot))
(define-vop (fixnum-to-digit)
- (:translate sb!bignum::%fixnum-to-digit)
+ (:translate sb!bignum:%fixnum-to-digit)
(:policy :fast-safe)
(:args (fixnum :scs (any-reg)))
(:arg-types tagged-num)
(inst sra digit fixnum n-fixnum-tag-bits)))
(define-vop (bignum-floor)
- (:translate sb!bignum::%floor)
+ (:translate sb!bignum:%bigfloor)
(:policy :fast-safe)
(:args (div-high :scs (unsigned-reg) :target rem)
- (div-low :scs (unsigned-reg) :target quo)
- (divisor :scs (unsigned-reg)))
+ (div-low :scs (unsigned-reg) :target quo)
+ (divisor :scs (unsigned-reg)))
(:arg-types unsigned-num unsigned-num unsigned-num)
(:results (quo :scs (unsigned-reg) :from (:argument 1))
- (rem :scs (unsigned-reg) :from (:argument 0)))
+ (rem :scs (unsigned-reg) :from (:argument 0)))
(:result-types unsigned-num unsigned-num)
(:generator 300
(move rem div-high)
(move quo div-low)
(dotimes (i 33)
(let ((label (gen-label)))
- (inst cmp rem divisor)
- (inst b :ltu label)
- (inst addxcc quo quo)
- (inst sub rem divisor)
- (emit-label label)
- (unless (= i 32)
- (inst addx rem rem))))
+ (inst cmp rem divisor)
+ (inst b :ltu label)
+ (inst addxcc quo quo)
+ (inst sub rem divisor)
+ (emit-label label)
+ (unless (= i 32)
+ (inst addx rem rem))))
(inst not quo)))
(define-vop (bignum-floor-v8)
- (:translate sb!bignum::%floor)
+ (:translate sb!bignum:%bigfloor)
(:policy :fast-safe)
(:args (div-high :scs (unsigned-reg) :target rem)
- (div-low :scs (unsigned-reg) :target quo)
- (divisor :scs (unsigned-reg)))
+ (div-low :scs (unsigned-reg) :target quo)
+ (divisor :scs (unsigned-reg)))
(:arg-types unsigned-num unsigned-num unsigned-num)
(:results (quo :scs (unsigned-reg) :from (:argument 1))
- (rem :scs (unsigned-reg) :from (:argument 0)))
+ (rem :scs (unsigned-reg) :from (:argument 0)))
(:result-types unsigned-num unsigned-num)
(:temporary (:scs (unsigned-reg) :target quo) q)
;; This vop is for a v8 or v9, provided we're also not using
;; sparc-64, for which there a special sparc-64 vop.
(:guard (or (member :sparc-v8 *backend-subfeatures*)
- (member :sparc-v9 *backend-subfeatures*)))
+ (member :sparc-v9 *backend-subfeatures*)))
(:generator 15
(inst wry div-high)
(inst nop)
(move quo q))))
(define-vop (bignum-floor-v9)
- (:translate sb!bignum::%floor)
+ (:translate sb!bignum:%bigfloor)
(:policy :fast-safe)
(:args (div-high :scs (unsigned-reg))
- (div-low :scs (unsigned-reg))
- (divisor :scs (unsigned-reg) :to (:result 1)))
+ (div-low :scs (unsigned-reg))
+ (divisor :scs (unsigned-reg) :to (:result 1)))
(:arg-types unsigned-num unsigned-num unsigned-num)
(:temporary (:sc unsigned-reg :from (:argument 0)) dividend)
(:results (quo :scs (unsigned-reg))
- (rem :scs (unsigned-reg)))
+ (rem :scs (unsigned-reg)))
(:result-types unsigned-num unsigned-num)
(:guard (member :sparc-64 *backend-subfeatures*))
(:generator 5
- ;; Set dividend to be div-high and div-low
+ ;; Set dividend to be div-high and div-low
(inst sllx dividend div-high 32)
(inst add dividend div-low)
;; Compute quotient
(inst sub rem dividend rem)))
(define-vop (signify-digit)
- (:translate sb!bignum::%fixnum-digit-with-correct-sign)
+ (:translate sb!bignum:%fixnum-digit-with-correct-sign)
(:policy :fast-safe)
(:args (digit :scs (unsigned-reg) :target res))
(:arg-types unsigned-num)
(signed-reg
(move res digit)))))
-
(define-vop (digit-ashr)
- (:translate sb!bignum::%ashr)
+ (:translate sb!bignum:%ashr)
(:policy :fast-safe)
(:args (digit :scs (unsigned-reg))
- (count :scs (unsigned-reg)))
+ (count :scs (unsigned-reg)))
(:arg-types unsigned-num positive-fixnum)
(:results (result :scs (unsigned-reg)))
(:result-types unsigned-num)
(inst sra result digit count)))
(define-vop (digit-lshr digit-ashr)
- (:translate sb!bignum::%digit-logical-shift-right)
+ (:translate sb!bignum:%digit-logical-shift-right)
(:generator 1
(inst srl result digit count)))
(define-vop (digit-ashl digit-ashr)
- (:translate sb!bignum::%ashl)
+ (:translate sb!bignum:%ashl)
(:generator 1
(inst sll result digit count)))
(define-static-fun two-arg-eqv (x y) :translate logeqv)
\f
-;; Need these so constant folding works with the deftransform.
-
-;; FIXME KLUDGE ew yuk.
-#-sb-xc-host
-(progn
- (defun ash-right-signed (num shift)
- (ash-right-signed num shift))
-
- (defun ash-right-unsigned (num shuft)
- (ash-right-unsigned num shift)))
-
(in-package "SB!C")
(deftransform * ((x y)
- ((unsigned-byte 32) (constant-arg (unsigned-byte 32)))
- (unsigned-byte 32))
+ ((unsigned-byte 32) (constant-arg (unsigned-byte 32)))
+ (unsigned-byte 32))
"recode as shifts and adds"
- (let ((y (continuation-value y)))
+ (let ((y (lvar-value y)))
(multiple-value-bind (result adds shifts)
- (ub32-strength-reduce-constant-multiply 'x y)
+ (ub32-strength-reduce-constant-multiply 'x y)
(cond
;; we assume, perhaps foolishly, that good SPARCs don't have an
;; issue with multiplications. (Remember that there's a
;; different transform for converting x*2^k to a shift).
((member :sparc-64 *backend-subfeatures*) (give-up-ir1-transform))
((or (member :sparc-v9 *backend-subfeatures*)
- (member :sparc-v8 *backend-subfeatures*))
- ;; breakeven point as measured by Raymond Toy
- (when (> (+ adds shifts) 9)
- (give-up-ir1-transform))))
+ (member :sparc-v8 *backend-subfeatures*))
+ ;; breakeven point as measured by Raymond Toy
+ (when (> (+ adds shifts) 9)
+ (give-up-ir1-transform))))
(or result 0))))
-
-;; If we can prove that we have a right shift, just do the right shift
-;; instead of calling the inline ASH which has to check for the
-;; direction of the shift at run-time.
-(deftransform ash ((num shift) (integer integer))
- (let ((num-type (continuation-type num))
- (shift-type (continuation-type shift)))
- ;; Can only handle right shifts
- (unless (csubtypep shift-type (specifier-type '(integer * 0)))
- (give-up-ir1-transform))
-
- ;; If we can prove the shift is so large that all bits are shifted
- ;; out, return the appropriate constant. If the shift is small
- ;; enough, call the VOP. Otherwise, check for the shift size and
- ;; do the appropriate thing. (Hmm, could we just leave the IF
- ;; s-expr and depend on other parts of the compiler to delete the
- ;; unreachable parts, if any?)
- (cond ((csubtypep num-type (specifier-type '(signed-byte #.sb!vm:n-word-bits)))
- ;; A right shift by 31 is the same as a right shift by
- ;; larger amount. We get just the sign.
- (if (csubtypep shift-type (specifier-type '(integer #.(- 1 sb!vm:n-word-bits) 0)))
- ;; FIXME: ash-right-{un,}signed package problems
- `(sb!vm::ash-right-signed num (- shift))
- `(sb!vm::ash-right-signed num (min (- shift) #.(1- sb!vm:n-word-bits)))))
- ((csubtypep num-type (specifier-type '(unsigned-byte #.sb!vm:n-word-bits)))
- (if (csubtypep shift-type (specifier-type '(integer #.(- 1 sb!vm:n-word-bits) 0)))
- `(sb!vm::ash-right-unsigned num (- shift))
- `(if (<= shift #.(- sb!vm:n-word-bits))
- 0
- (sb!vm::ash-right-unsigned num (- shift)))))
- (t
- (give-up-ir1-transform)))))
-
projects / sbcl.git / blobdiff