-;;;; the VM definition arithmetic VOPs for the Alpha
+;;;; the VM definition arithmetic VOPs for the SPARC
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
(eval-when (:compile-toplevel :load-toplevel :execute)
-(defmacro define-binop (translate untagged-penalty op)
+(defmacro define-binop (translate untagged-penalty op
+ &optional arg-swap restore-fixnum-mask)
`(progn
- (define-vop (,(symbolicate "FAST-" translate "/FIXNUM=>FIXNUM")
+ (define-vop (,(symbolicate 'fast translate '/fixnum=>fixnum)
fast-fixnum-binop)
+ ,@(when restore-fixnum-mask
+ `((:temporary (:sc non-descriptor-reg) temp)))
(:translate ,translate)
(:generator 2
- (inst ,op r x y)))
- (define-vop (,(symbolicate 'fast- translate '-c/fixnum=>fixnum)
- fast-fixnum-binop-c)
- (:translate ,translate)
- (:generator 1
- (inst ,op r x (fixnumize y))))
- (define-vop (,(symbolicate "FAST-" translate "/SIGNED=>SIGNED")
+ ,(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 '/signed=>signed)
fast-signed-binop)
(:translate ,translate)
(:generator ,(1+ 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")
+ ,(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 '/unsigned=>unsigned)
fast-unsigned-binop)
(:translate ,translate)
(:generator ,(1+ 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)))))
+ ,(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)))))))
); eval-when
(define-binop + 4 add)
(define-binop - 4 sub)
(define-binop logand 2 and)
+(define-binop logandc1 2 andn t)
(define-binop logandc2 2 andn)
(define-binop logior 2 or)
-(define-binop logorc2 2 orn)
+(define-binop logorc1 2 orn t t)
+(define-binop logorc2 2 orn nil t)
(define-binop logxor 2 xor)
-(define-binop logeqv 2 xnor)
+(define-binop logeqv 2 xnor nil t)
-;;; Special logand cases: (logand signed unsigned) => unsigned
-
-(define-vop (fast-logand/signed-unsigned=>unsigned
- fast-logand/unsigned=>unsigned)
- (:args (x :target r :scs (signed-reg))
- (y :scs (unsigned-reg unsigned-stack)))
- (:arg-types signed-num unsigned-num))
-
-(define-vop (fast-logand/unsigned-signed=>unsigned
- fast-logand/unsigned=>unsigned)
- (:args (x :target r :scs (unsigned-reg))
- (y :scs (signed-reg signed-stack)))
- (:arg-types unsigned-num signed-num))
-
;;; Special case fixnum + and - that trap on overflow. Useful when we
;;; don't know that the output type is a fixnum.
-;;; I (toy@rtp.ericsson.se) took these out. They don't seem to be
-;;; used anywhere at all.
+;;; I (Raymond Toy) took these out. They don't seem to be used
+;;; anywhere at all.
#+nil
(progn
(define-vop (+/fixnum fast-+/fixnum=>fixnum)
;;; Shifting
-(macrolet
- ((frob (name sc-type type shift-right-inst)
- `(define-vop (,name)
- (:note "inline ASH")
- (:args (number :scs (,sc-type) :to :save)
- (amount :scs (signed-reg immediate)))
- (:arg-types ,type signed-num)
- (:results (result :scs (,sc-type)))
- (:result-types ,type)
- (:translate ash)
- (:policy :fast-safe)
- (:temporary (:sc non-descriptor-reg) ndesc)
- (:generator 5
- (sc-case amount
- (signed-reg
- (cond
- ;; FIXME: These two don't look different enough.
- ((member :sparc-v9 *backend-subfeatures*)
- (let ((done (gen-label))
- (positive (gen-label)))
- (inst cmp amount)
- (inst b :ge positive)
- (inst neg ndesc amount)
- ;; ndesc = max(-amount, 31)
- (inst cmp ndesc 31)
- (inst cmove :ge ndesc 31)
- (inst b done)
- (inst ,shift-right-inst result number ndesc)
- (emit-label positive)
- ;; The result-type assures us that this shift will
- ;; not overflow.
- (inst sll result number amount)
- ;; We want a right shift of the appropriate size.
- (emit-label done)))
- (t
- (let ((positive (gen-label))
- (done (gen-label)))
- (inst cmp amount)
- (inst b :ge positive)
- (inst neg ndesc amount)
- (inst cmp ndesc 31)
- (inst b :le done)
- (inst ,shift-right-inst result number ndesc)
- (inst b done)
- (inst ,shift-right-inst result number 31)
- (emit-label positive)
- ;; The result-type assures us that this shift will
- ;; not overflow.
- (inst sll result number amount)
- (emit-label done)))))
- (immediate
- (let ((amount (tn-value amount)))
- (if (minusp amount)
- (let ((amount (min 31 (- amount))))
- (inst ,shift-right-inst result number amount))
- (inst sll result number amount)))))))))
- (frob fast-ash/signed=>signed signed-reg signed-num sra)
- (frob fast-ash/unsigned=>unsigned unsigned-reg unsigned-num srl))
+(define-vop (fast-ash/signed=>signed)
+ (:note "inline ASH")
+ (:args (number :scs (signed-reg) :to :save)
+ (amount :scs (signed-reg immediate) :to :save))
+ (:arg-types signed-num signed-num)
+ (:results (result :scs (signed-reg)))
+ (:result-types signed-num)
+ (:translate ash)
+ (: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")))))
+
+(define-vop (fast-ash/unsigned=>unsigned)
+ (:note "inline ASH")
+ (:args (number :scs (unsigned-reg) :to :save)
+ (amount :scs (signed-reg immediate) :to :save))
+ (:arg-types unsigned-num signed-num)
+ (:results (result :scs (unsigned-reg)))
+ (:result-types unsigned-num)
+ (:translate ash)
+ (: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")))))
;; Some special cases where we know we want a left shift. Just do the
;; shift, instead of checking for the sign of the shift.
(:policy :fast-safe)
(:generator ,cost
;; The result-type assures us that this shift will not
- ;; overflow. And for fixnum's, the zero bits that get
+ ;; 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 sra temp y n-fixnum-tag-bits)
(inst smul r x temp)))
+(define-vop (fast-v8-*-c/fixnum=>fixnum fast-safe-arith-op)
+ (:args (x :target r :scs (any-reg zero)))
+ (:info y)
+ (:arg-types tagged-num
+ (: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*)))))
+ (:generator 1
+ (inst smul r x y)))
+
(define-vop (fast-v8-*/signed=>signed fast-signed-binop)
(:translate *)
(:guard (or (member :sparc-v8 *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*)))))
+ (:generator 2
+ (inst smul r x y)))
+
(define-vop (fast-v8-*/unsigned=>unsigned fast-unsigned-binop)
(:translate *)
(:guard (or (member :sparc-v8 *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*)))))
+ (:generator 2
+ (inst umul r x y)))
+
;; The smul and umul instructions are deprecated on the Sparc V9. Use
;; mulx instead.
(define-vop (fast-v9-*/fixnum=>fixnum fast-fixnum-binop)
(inst mulx r x y)))
\f
+;;;; Modular functions:
+(define-modular-fun lognot-mod32 (x) lognot 32)
+(define-vop (lognot-mod32/unsigned=>unsigned)
+ (:translate lognot-mod32)
+ (:args (x :scs (unsigned-reg)))
+ (:arg-types unsigned-num)
+ (:results (res :scs (unsigned-reg)))
+ (:result-types unsigned-num)
+ (:policy :fast-safe)
+ (:generator 1
+ (inst not res x)))
+
+(macrolet
+ ((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))
+ (vop (symbolicate 'fast- fun '/unsigned=>unsigned))
+ (cvop (symbolicate 'fast- fun '-c/unsigned=>unsigned)))
+ `(progn
+ (define-modular-fun ,mfun-name (x y) ,fun 32)
+ (define-vop (,modvop ,vop)
+ (:translate ,mfun-name))
+ ,@(when constantp
+ `((define-vop (,modcvop ,cvop)
+ (:translate ,mfun-name))))))))
+ (define-modular-backend + t)
+ (define-modular-backend logxor t)
+ (define-modular-backend logeqv t)
+ (define-modular-backend logandc1)
+ (define-modular-backend logandc2 t)
+ (define-modular-backend logorc1)
+ (define-modular-backend logorc2 t))
+
+(define-source-transform lognand (x y)
+ `(lognot (logand ,x ,y)))
+(define-source-transform lognor (x y)
+ `(lognot (logior ,x ,y)))
+\f
;;;; Binary conditional VOPs:
(define-vop (fast-conditional)
(:affected)
(:policy :fast-safe))
-(deftype integer-with-a-bite-out (s bite)
- (cond ((eq s '*) 'integer)
- ((and (integerp s) (> s 1))
- (let ((bound (ash 1 (1- s))))
- `(integer ,(- bound) ,(- bound bite 1))))
- (t
- (error "Bad size specified for SIGNED-BYTE type specifier: ~S." s))))
-
(define-vop (fast-conditional/fixnum fast-conditional)
(:args (x :scs (any-reg zero))
(y :scs (any-reg zero)))
(emit-label done)
(move result res))))
+(define-source-transform 32bit-logical-not (x)
+ `(logand (lognot (the (unsigned-byte 32) ,x)) #.(1- (ash 1 32))))
-(define-vop (32bit-logical)
- (:args (x :scs (unsigned-reg zero))
- (y :scs (unsigned-reg zero)))
- (:arg-types unsigned-num unsigned-num)
- (:results (r :scs (unsigned-reg)))
- (:result-types unsigned-num)
- (:policy :fast-safe))
-
-(define-vop (32bit-logical-not 32bit-logical)
- (:translate 32bit-logical-not)
- (:args (x :scs (unsigned-reg zero)))
- (:arg-types unsigned-num)
- (:generator 1
- (inst not r x)))
-
-(define-vop (32bit-logical-and 32bit-logical)
- (:translate 32bit-logical-and)
- (:generator 1
- (inst and r x y)))
-
-(deftransform 32bit-logical-nand ((x y) (* *))
- '(32bit-logical-not (32bit-logical-and x y)))
+(deftransform 32bit-logical-and ((x y))
+ '(logand x y))
-(define-vop (32bit-logical-or 32bit-logical)
- (:translate 32bit-logical-or)
- (:generator 1
- (inst or r x y)))
+(deftransform 32bit-logical-nand ((x y))
+ '(logand (lognand x y) #.(1- (ash 1 32))))
-(deftransform 32bit-logical-nor ((x y) (* *))
- '(32bit-logical-not (32bit-logical-or x y)))
+(deftransform 32bit-logical-or ((x y))
+ '(logior x y))
-(define-vop (32bit-logical-xor 32bit-logical)
- (:translate 32bit-logical-xor)
- (:generator 1
- (inst xor r x y)))
+(deftransform 32bit-logical-nor ((x y))
+ '(logand (lognor x y) #.(1- (ash 1 32))))
-(define-vop (32bit-logical-eqv 32bit-logical)
- (:translate 32bit-logical-eqv)
- (:generator 1
- (inst xnor r x y)))
+(deftransform 32bit-logical-xor ((x y))
+ '(logxor x y))
-(define-vop (32bit-logical-orc2 32bit-logical)
- (:translate 32bit-logical-orc2)
- (:generator 1
- (inst orn r x y)))
+(deftransform 32bit-logical-eqv ((x y))
+ '(logand (logeqv x y) #.(1- (ash 1 32))))
-(deftransform 32bit-logical-orc1 ((x y) (* *))
- '(32bit-logical-orc2 y x))
+(deftransform 32bit-logical-orc1 ((x y))
+ '(logand (logorc1 x y) #.(1- (ash 1 32))))
-(define-vop (32bit-logical-andc2 32bit-logical)
- (:translate 32bit-logical-andc2)
- (:generator 1
- (inst andn r x y)))
+(deftransform 32bit-logical-orc2 ((x y))
+ '(logand (logorc2 x y) #.(1- (ash 1 32))))
-(deftransform 32bit-logical-andc1 ((x y) (* *))
- '(32bit-logical-andc2 y x))
+(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)
(:note "shift-towards-end")
(:generator 1
(inst srl r num amount)))
-
-
-
\f
;;;; Bignum stuff.
(:generator 40
(emit-multiply x y hi lo)))
-(define-vop (bignum-lognot)
- (:translate sb!bignum::%lognot)
- (:policy :fast-safe)
- (:args (x :scs (unsigned-reg)))
- (:arg-types unsigned-num)
- (:results (r :scs (unsigned-reg)))
- (:result-types unsigned-num)
- (:generator 1
- (inst not r x)))
+(define-vop (bignum-lognot lognot-mod32/unsigned=>unsigned)
+ (:translate sb!bignum::%lognot))
(define-vop (fixnum-to-digit)
(:translate sb!bignum::%fixnum-to-digit)
(define-static-fun two-arg-and (x y) :translate logand)
(define-static-fun two-arg-ior (x y) :translate logior)
(define-static-fun two-arg-xor (x y) :translate logxor)
+(define-static-fun two-arg-eqv (x y) :translate logeqv)
\f
;; Need these so constant folding works with the deftransform.
-(defun ash-right-signed (num shift)
- (declare (type (signed-byte #.sb!vm:n-word-bits) num)
- (type (integer 0 #.(1- sb!vm:n-word-bits)) shift))
- (ash-right-signed num shift))
+;; 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")
-(defun ash-right-unsigned (num shift)
- (declare (type (unsigned-byte #.sb!vm:n-word-bits) num)
- (type (integer 0 #.(1- sb!vm:n-word-bits)) shift))
- (ash-right-unsigned num shift))
+(deftransform * ((x y)
+ ((unsigned-byte 32) (constant-arg (unsigned-byte 32)))
+ (unsigned-byte 32))
+ "recode as shifts and adds"
+ (let ((y (lvar-value y)))
+ (multiple-value-bind (result adds shifts)
+ (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))))
+ (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.
-(in-package "SB!C")
-
(deftransform ash ((num shift) (integer integer))
- (let ((num-type (continuation-type num))
- (shift-type (continuation-type shift)))
+ (let ((num-type (lvar-type num))
+ (shift-type (lvar-type shift)))
;; Can only handle right shifts
(unless (csubtypep shift-type (specifier-type '(integer * 0)))
(give-up-ir1-transform))
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