X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fsparc%2Farith.lisp;h=de8d3e63e38a4d8fe98d05482846ffafde2bb70a;hb=3b7fca49cbf6c48605e7ebc1f57caa3255ca5cfd;hp=515f49ed3bafe94040c600e6e64ec371e6e8f079;hpb=68fd2d2dd6f265669a8957accd8a33e62786a97e;p=sbcl.git

diff --git a/src/compiler/sparc/arith.lisp b/src/compiler/sparc/arith.lisp
index 515f49e..de8d3e6 100644
--- a/src/compiler/sparc/arith.lisp
+++ b/src/compiler/sparc/arith.lisp
@@ -1,4 +1,4 @@
-;;;; 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.
@@ -44,12 +44,12 @@
 
 (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)))
 
 ;;;; Binary fixnum operations.
@@ -58,7 +58,7 @@
 
 (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)
@@ -66,7 +66,7 @@
 
 (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)
@@ -74,7 +74,7 @@
 
 (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)
@@ -85,7 +85,7 @@
   (: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"))
@@ -94,7 +94,7 @@
   (: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"))
@@ -103,7 +103,7 @@
   (: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"))
@@ -111,69 +111,81 @@
 
 (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")
-		  fast-fixnum-binop)
+     (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")
-		  fast-signed-binop)
+         ,(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")
-		  fast-unsigned-binop)
+         ,(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)
-
-;;; 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))
-    
+(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.
 
-;;; 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)
@@ -217,10 +229,10 @@
 (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)
@@ -228,8 +240,9 @@
   (:temporary (:scs (signed-reg)) y-int)
   (:vop-var vop)
   (:save-p :compute-only)
-  (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
-	  #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+  (:guard (or (member :sparc-v8 *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)
@@ -238,38 +251,41 @@
         (inst sra r x 31)
       (inst wry r)
       ;; Remove tag bits so Q and R will be tagged correctly.
-      (inst sra y-int y fixnum-tag-bits)
+      (inst sra y-int y n-fixnum-tag-bits)
       (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)
   (:temporary (:scs (signed-reg)) r)
   (:vop-var vop)
   (:save-p :compute-only)
-  (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
-	  #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+  (:guard (or (member :sparc-v8 *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 b :eq zero #!+:sparc-v9 :pn)
+      (if (member :sparc-v9 *backend-subfeatures*)
+          (inst b :eq zero :pn)
+          (inst b :eq zero))
       ;; Extend the sign of X into the Y register
-        (inst sra r x 31)
+      (inst sra r x 31)
       (inst wry r)
       (inst nop)
       (inst nop)
@@ -277,245 +293,219 @@
 
       (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)
   (:temporary (:scs (unsigned-reg)) r)
   (:vop-var vop)
   (:save-p :compute-only)
-  (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
-	  #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+  (:guard (or (member :sparc-v8 *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)
-      (inst b :eq zero #!+:sparc-v9 :pn)
-        (inst wry zero-tn)		; Clear out high part
+      (if (member :sparc-v9 *backend-subfeatures*)
+          (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)))))
 
-#!+:sparc-v9
 (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)
   (:temporary (:scs (signed-reg)) r)
   (:vop-var vop)
   (:save-p :compute-only)
-  (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+  (:guard (member :sparc-64 *backend-subfeatures*))
   (:generator 8
     (let ((zero (generate-error-code vop division-by-zero-error x y)))
       (inst cmp y zero-tn)
-      (inst b :eq zero #!+:sparc-v9 :pn)
+      (inst b :eq zero :pn)
       ;; Sign extend the numbers, just in case.
-        (inst sra x 0)
+      (inst sra x 0)
       (inst sra y 0)
       (inst sdivx q x y)
       ;; Compute remainder
       (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)
   (:temporary (:scs (unsigned-reg)) r)
   (:vop-var vop)
   (:save-p :compute-only)
-  (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+  (:guard (member :sparc-64 *backend-subfeatures*))
   (:generator 8
     (let ((zero (generate-error-code vop division-by-zero-error x y)))
       (inst cmp y zero-tn)
-      (inst b :eq zero #!+:sparc-v9 :pn)
+      (inst b :eq zero :pn)
       ;; Zap the higher 32 bits, just in case
-        (inst srl x 0)
+      (inst srl x 0)
       (inst srl y 0)
       (inst udivx q x y)
       ;; Compute remainder
       (inst mulx r q y)
       (inst sub rem x r)
       (unless (location= quo q)
-	(inst move quo q)))))
+        (inst move quo q)))))
 
 ;;; 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
-	     #!+:sparc-v9
-	     (signed-reg
-	      (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)))
-	     #!-:sparc-v9
-	     (signed-reg
-	      (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) :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
+    (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) :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
+    (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)
-       `(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 fixnum's, 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)
+    ((def (name sc-type type result-type 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))
 
 
 (define-vop (signed-byte-32-len)
@@ -529,7 +519,7 @@
   (: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)
@@ -538,7 +528,7 @@
 
       (emit-label loop)
       (inst add res (fixnumize 1))
-      
+
       (emit-label test)
       (inst cmp shift)
       (inst b :ne loop)
@@ -557,17 +547,17 @@
       (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.
@@ -575,53 +565,138 @@
 (define-vop (fast-v8-*/fixnum=>fixnum fast-fixnum-binop)
   (:temporary (:scs (non-descriptor-reg)) temp)
   (:translate *)
-  (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
-	  #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+  (:guard (or (member :sparc-v8 *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
     ;; has to convert both args to signed-nums.  But using this, we
     ;; don't have to and that saves an instruction.
-    (inst sra temp y fixnum-tag-bits)
+    (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 :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
-	  #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+  (:guard (or (member :sparc-v8 *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*)))))
+  (:generator 2
+    (inst smul r x y)))
+
 (define-vop (fast-v8-*/unsigned=>unsigned fast-unsigned-binop)
   (:translate *)
-  (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
-	  #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+  (:guard (or (member :sparc-v8 *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*)))))
+  (: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)
   (:temporary (:scs (non-descriptor-reg)) temp)
   (:translate *)
-  (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+  (:guard (member :sparc-64 *backend-subfeatures*))
   (:generator 4
-    (inst sra temp y fixnum-tag-bits)
+    (inst sra temp y n-fixnum-tag-bits)
     (inst mulx r x temp)))
 
 (define-vop (fast-v9-*/signed=>signed fast-signed-binop)
   (:translate *)
-  (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+  (:guard (member :sparc-64 *backend-subfeatures*))
   (:generator 3
     (inst mulx r x y)))
 
 (define-vop (fast-v9-*/unsigned=>unsigned fast-unsigned-binop)
   (:translate *)
-  (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+  (:guard (member :sparc-64 *backend-subfeatures*))
   (:generator 3
     (inst mulx r x y)))
 
 
+;;;; Modular functions:
+(define-modular-fun lognot-mod32 (x) lognot :untagged nil 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 :untagged nil 32)
+            (define-vop (,modvop ,vop)
+              (:translate ,mfun-name))
+            ,@(when constantp
+                `((define-vop (,modcvop ,cvop)
+                    (:translate ,mfun-name))))))))
+  (define-modular-backend + t)
+  (define-modular-backend - 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)))
+
+(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))
+
 ;;;; Binary conditional VOPs:
 
 (define-vop (fast-conditional)
@@ -631,17 +706,9 @@
   (: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)))
+         (y :scs (any-reg zero)))
   (:arg-types tagged-num tagged-num)
   (:note "inline fixnum comparison"))
 
@@ -652,7 +719,7 @@
 
 (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"))
 
@@ -663,7 +730,7 @@
 
 (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"))
 
@@ -676,25 +743,25 @@
 (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)
 
@@ -714,7 +781,7 @@
 
 (define-vop (fast-eql/fixnum fast-conditional)
   (:args (x :scs (any-reg descriptor-reg zero))
-	 (y :scs (any-reg zero)))
+         (y :scs (any-reg zero)))
   (:arg-types tagged-num tagged-num)
   (:note "inline fixnum comparison")
   (:translate eql)
@@ -744,91 +811,10 @@
 
 ;;;; 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-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)))
-
-(define-vop (32bit-logical-or 32bit-logical)
-  (:translate 32bit-logical-or)
-  (:generator 1
-    (inst or r x y)))
-
-(deftransform 32bit-logical-nor ((x y) (* *))
-  '(32bit-logical-not (32bit-logical-or x y)))
-
-(define-vop (32bit-logical-xor 32bit-logical)
-  (:translate 32bit-logical-xor)
-  (:generator 1
-    (inst xor r x y)))
-
-(define-vop (32bit-logical-eqv 32bit-logical)
-  (:translate 32bit-logical-eqv)
-  (:generator 1
-    (inst xnor r x y)))
-
-(define-vop (32bit-logical-orc2 32bit-logical)
-  (:translate 32bit-logical-orc2)
-  (:generator 1
-    (inst orn r x y)))
-
-(deftransform 32bit-logical-orc1 ((x y) (* *))
-  '(32bit-logical-orc2 y x))
-
-(define-vop (32bit-logical-andc2 32bit-logical)
-  (:translate 32bit-logical-andc2)
-  (:generator 1
-    (inst andn r x y)))
-
-(deftransform 32bit-logical-andc1 ((x y) (* *))
-  '(32bit-logical-andc2 y x))
-
-
 (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))
@@ -844,43 +830,39 @@
   (:note "shift-towards-end")
   (:generator 1
     (inst srl r num amount)))
-
-
-
 
 ;;;; 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)
   (:results (result :scs (descriptor-reg)))
-  (:guard #!-:sparc-v9 t #!+:sparc-v9 nil)
+  (:guard (not (member :sparc-v9 *backend-subfeatures*)))
   (:generator 3
     (let ((done (gen-label)))
       (inst cmp digit)
@@ -890,12 +872,12 @@
       (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)
   (:results (result :scs (descriptor-reg)))
-  (:guard #!+:sparc-v9 t #!-:sparc-v9 nil)
+  (:guard (member :sparc-v9 *backend-subfeatures*))
   (:generator 3
     (inst cmp digit)
     (load-symbol result t)
@@ -904,7 +886,7 @@
 ;; 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)
@@ -916,16 +898,15 @@
     (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)
@@ -933,14 +914,14 @@
     (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)
@@ -950,65 +931,65 @@
 
 ;;; 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.
-  #!+:sparc-64
-  (progn
-    ;; Take advantage of V9's 64-bit multiplier.
-    ;;
-    ;; Make sure the multiplier and multiplicand are really
-    ;; 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
-    ;; 32-bits.
-    (inst mulx result-high multiplier multiplicand)
-    (inst move result-low result-high)
-    (inst srax result-high 32))
-  #!+(and (not :sparc-64) (or :sparc-v8 :sparc-v9))
-  (progn
-    ;; V8 has a multiply instruction.  This should also work for
-    ;; the V9, but umul and the Y register is deprecated on the
-    ;; V9.
-    (inst umul result-low multiplier multiplicand)
-    (inst rdy result-high))
-  #!+(and (not :sparc-64) (not (or :sparc-v8 :sparc-v9)))
-  (let ((label (gen-label)))
-    (inst wry multiplier)
-    (inst andcc result-high zero-tn)
-    ;; Note: we can't use the Y register until three insts
-    ;; after it's written.
-    (inst nop)
-    (inst nop)
-    (dotimes (i 32)
-      (inst mulscc result-high multiplicand))
-    (inst mulscc result-high zero-tn)
-    (inst cmp multiplicand)
-    (inst b :ge label)
-    (inst nop)
-    (inst add result-high multiplier)
-    (emit-label label)
-    (inst rdy result-low)))
+  (cond
+    ((member :sparc-64 *backend-subfeatures*)
+     ;; Take advantage of V9's 64-bit multiplier.
+     ;;
+     ;; Make sure the multiplier and multiplicand are really
+     ;; 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
+     ;; 32-bits.
+     (inst mulx result-high multiplier multiplicand)
+     (inst move result-low result-high)
+     (inst srax result-high 32))
+    ((or (member :sparc-v8 *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 umul result-low multiplier multiplicand)
+     (inst rdy result-high))
+    (t
+     (let ((label (gen-label)))
+       (inst wry multiplier)
+       (inst andcc result-high zero-tn)
+       ;; Note: we can't use the Y register until three insts
+       ;; after it's written.
+       (inst nop)
+       (inst nop)
+       (dotimes (i 32)
+         (inst mulscc result-high multiplicand))
+       (inst mulscc result-high zero-tn)
+       (inst cmp multiplicand)
+       (inst b :ge label)
+       (inst nop)
+       (inst add result-high multiplier)
+       (emit-label 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)
@@ -1016,15 +997,15 @@
     (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)
@@ -1034,78 +1015,69 @@
     (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)
-  (: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)
+  (:translate sb!bignum:%fixnum-to-digit)
   (:policy :fast-safe)
   (:args (fixnum :scs (any-reg)))
   (:arg-types tagged-num)
   (:results (digit :scs (unsigned-reg)))
   (:result-types unsigned-num)
   (:generator 1
-    (inst sra digit fixnum fixnum-tag-bits)))
+    (inst sra digit fixnum n-fixnum-tag-bits)))
 
 (define-vop (bignum-floor)
-  (:translate sb!bignum::%floor)
+  (:translate sb!bignum:%floor)
   (: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)
-  (:guard #!+(not (or :sparc-v8 :sparc-v9)) t
-	  #!-(not (or :sparc-v8 :sparc-v9)) nil)
   (: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:%floor)
   (: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 :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
-	  #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+  (:guard (or (member :sparc-v8 *backend-subfeatures*)
+              (member :sparc-v9 *backend-subfeatures*)))
   (:generator 15
     (inst wry div-high)
     (inst nop)
@@ -1121,19 +1093,19 @@
       (move quo q))))
 
 (define-vop (bignum-floor-v9)
-  (:translate sb!bignum::%floor)
+  (:translate sb!bignum:%floor)
   (: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 #!+:sparc-64 t #!-:sparc-64 nil)
+  (: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
@@ -1143,7 +1115,7 @@
     (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)
@@ -1152,16 +1124,15 @@
   (:generator 1
     (sc-case res
       (any-reg
-       (inst sll res digit fixnum-tag-bits))
+       (inst sll res digit n-fixnum-tag-bits))
       (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)
@@ -1169,12 +1140,12 @@
     (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)))
 
@@ -1201,51 +1172,26 @@
 (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)
 
 
-;; 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))
-
-(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))
-
-;; 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)))
-    ;; 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)))))
-
+(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))))