path: root/src/compiler/x86-64/array.lisp

;;;; array operations for the x86 VM

;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; This software is derived from the CMU CL system, which was
;;;; written at Carnegie Mellon University and released into the
;;;; public domain. The software is in the public domain and is
;;;; provided with absolutely no warranty. See the COPYING and CREDITS
;;;; files for more information.

(in-package "SB!VM")


;; For use in constant indexing; we can't use INDEX since the displacement
;; field of an EA can't contain 64 bit values.
(deftype low-index () '(signed-byte 29))

;;;; allocator for the array header

(define-vop (make-array-header)
  (:translate make-array-header)
  (:policy :fast-safe)
  (:args (type :scs (any-reg))
         (rank :scs (any-reg)))
  (:arg-types positive-fixnum positive-fixnum)
  (:temporary (:sc any-reg :to :eval) bytes)
  (:temporary (:sc any-reg :to :result) header)
  (:results (result :scs (descriptor-reg) :from :eval))
  (:node-var node)
  (:generator 13
    (inst lea bytes
          (make-ea :qword :base rank
                   :disp (+ (* (1+ array-dimensions-offset) n-word-bytes)
                            lowtag-mask)))
    (inst and bytes (lognot lowtag-mask))
    (inst lea header (make-ea :qword :base rank
                              :disp (fixnumize (1- array-dimensions-offset))))
    (inst shl header n-widetag-bits)
    (inst or  header type)
    (inst shr header (1- n-lowtag-bits))
    (pseudo-atomic
     (allocation result bytes node)
     (inst lea result (make-ea :qword :base result :disp other-pointer-lowtag))
     (storew header result 0 other-pointer-lowtag))))

;;;; additional accessors and setters for the array header
(define-full-reffer %array-dimension *
  array-dimensions-offset other-pointer-lowtag
  (any-reg) positive-fixnum sb!kernel:%array-dimension)

(define-full-setter %set-array-dimension *
  array-dimensions-offset other-pointer-lowtag
  (any-reg) positive-fixnum sb!kernel:%set-array-dimension)

(define-vop (array-rank-vop)
  (:translate sb!kernel:%array-rank)
  (:policy :fast-safe)
  (:args (x :scs (descriptor-reg)))
  (:results (res :scs (unsigned-reg)))
  (:result-types positive-fixnum)
  (:generator 6
    (loadw res x 0 other-pointer-lowtag)
    (inst shr res n-widetag-bits)
    (inst sub res (1- array-dimensions-offset))))

;;;; bounds checking routine

;;; Note that the immediate SC for the index argument is disabled
;;; because it is not possible to generate a valid error code SC for
;;; an immediate value.
;;;
;;; FIXME: As per the KLUDGE note explaining the :IGNORE-FAILURE-P
;;; flag in build-order.lisp-expr, compiling this file causes warnings
;;;    Argument FOO to VOP CHECK-BOUND has SC restriction
;;;    DESCRIPTOR-REG which is not allowed by the operand type:
;;;      (:OR POSITIVE-FIXNUM)
;;; CSR's message "format ~/ /" on sbcl-devel 2002-03-12 contained
;;; a possible patch, described as
;;;   Another patch is included more for information than anything --
;;;   removing the descriptor-reg SCs from the CHECK-BOUND vop in
;;;   x86/array.lisp seems to allow that file to compile without error[*],
;;;   and build; I haven't tested rebuilding capability, but I'd be
;;;   surprised if there were a problem.  I'm not certain that this is the
;;;   correct fix, though, as the restrictions on the arguments to the VOP
;;;   aren't the same as in the sparc and alpha ports, where, incidentally,
;;;   the corresponding file builds without error currently.
;;; Since neither of us (CSR or WHN) was quite sure that this is the
;;; right thing, I've just recorded the patch here in hopes it might
;;; help when someone attacks this problem again:
;;;   diff -u -r1.7 array.lisp
;;;   --- src/compiler/x86/array.lisp 11 Oct 2001 14:05:26 -0000      1.7
;;;   +++ src/compiler/x86/array.lisp 12 Mar 2002 12:23:37 -0000
;;;   @@ -76,10 +76,10 @@
;;;      (:translate %check-bound)
;;;      (:policy :fast-safe)
;;;      (:args (array :scs (descriptor-reg))
;;;   -        (bound :scs (any-reg descriptor-reg))
;;;   -        (index :scs (any-reg descriptor-reg #+nil immediate) :target result))
;;;   +        (bound :scs (any-reg))
;;;   +        (index :scs (any-reg #+nil immediate) :target result))
;;;      (:arg-types * positive-fixnum tagged-num)
;;;   -  (:results (result :scs (any-reg descriptor-reg)))
;;;   +  (:results (result :scs (any-reg)))
;;;      (:result-types positive-fixnum)
;;;      (:vop-var vop)
;;;      (:save-p :compute-only)
(define-vop (check-bound)
  (:translate %check-bound)
  (:policy :fast-safe)
  (:args (array :scs (descriptor-reg))
         (bound :scs (any-reg descriptor-reg))
         (index :scs (any-reg descriptor-reg) :target result))
;  (:arg-types * positive-fixnum tagged-num)
  (:results (result :scs (any-reg descriptor-reg)))
 ; (:result-types positive-fixnum)
  (:vop-var vop)
  (:save-p :compute-only)
  (:generator 5
    (let ((error (generate-error-code vop invalid-array-index-error
                                      array bound index))
          (index (if (sc-is index immediate)
                   (fixnumize (tn-value index))
                   index)))
      (inst cmp bound index)
      ;; We use below-or-equal even though it's an unsigned test,
      ;; because negative indexes appear as large unsigned numbers.
      ;; Therefore, we get the <0 and >=bound test all rolled into one.
      (inst jmp :be error)
      (unless (and (tn-p index) (location= result index))
        (inst mov result index)))))

;;;; accessors/setters

;;; variants built on top of WORD-INDEX-REF, etc. I.e., those vectors
;;; whose elements are represented in integer registers and are built
;;; out of 8, 16, or 32 bit elements.
(macrolet ((def-full-data-vector-frobs (type element-type &rest scs)
             `(progn
                (define-full-reffer ,(symbolicate "DATA-VECTOR-REF/" type)
                  ,type vector-data-offset other-pointer-lowtag ,scs
                  ,element-type data-vector-ref)
                (define-full-setter ,(symbolicate "DATA-VECTOR-SET/" type)
                  ,type vector-data-offset other-pointer-lowtag ,scs
                  ,element-type data-vector-set)))
           )
  (def-full-data-vector-frobs simple-vector * descriptor-reg any-reg)
  (def-full-data-vector-frobs simple-array-unsigned-byte-64 unsigned-num
    unsigned-reg)
  (def-full-data-vector-frobs simple-array-signed-byte-61 tagged-num any-reg)
  (def-full-data-vector-frobs simple-array-unsigned-byte-60
      positive-fixnum any-reg)
  (def-full-data-vector-frobs simple-array-signed-byte-64
      signed-num signed-reg)
  (def-full-data-vector-frobs simple-array-unsigned-byte-63 unsigned-num
    unsigned-reg))

(define-full-compare-and-swap simple-vector-compare-and-swap
    simple-vector vector-data-offset other-pointer-lowtag
    (descriptor-reg any-reg) *
    %simple-vector-compare-and-swap)

;;;; integer vectors whose elements are smaller than a byte, i.e.,
;;;; bit, 2-bit, and 4-bit vectors

(macrolet ((def-small-data-vector-frobs (type bits)
             (let* ((elements-per-word (floor n-word-bits bits))
                    (bit-shift (1- (integer-length elements-per-word))))
    `(progn
       (define-vop (,(symbolicate 'data-vector-ref/ type))
         (:note "inline array access")
         (:translate data-vector-ref)
         (:policy :fast-safe)
         (:args (object :scs (descriptor-reg))
                (index :scs (unsigned-reg)))
         (:arg-types ,type positive-fixnum)
         (:results (result :scs (unsigned-reg) :from (:argument 0)))
         (:result-types positive-fixnum)
         (:temporary (:sc unsigned-reg :offset ecx-offset) ecx)
         (:generator 20
           (move ecx index)
           (inst shr ecx ,bit-shift)
           (inst mov result
                 (make-ea :qword :base object :index ecx :scale n-word-bytes
                          :disp (- (* vector-data-offset n-word-bytes)
                                   other-pointer-lowtag)))
           (move ecx index)
           ;; We used to mask ECX for all values of BITS, but since
           ;; Intel's documentation says that the chip will mask shift
           ;; and rotate counts by 63 automatically, we can safely move
           ;; the masking operation under the protection of this UNLESS
           ;; in the bit-vector case.  --njf, 2006-07-14
           ,@(unless (= bits 1)
               `((inst and ecx ,(1- elements-per-word))
                 (inst shl ecx ,(1- (integer-length bits)))))
           (inst shr result :cl)
           (inst and result ,(1- (ash 1 bits)))))
       (define-vop (,(symbolicate 'data-vector-ref-c/ type))
         (:translate data-vector-ref)
         (:policy :fast-safe)
         (:args (object :scs (descriptor-reg)))
         (:arg-types ,type (:constant low-index))
         (:info index)
         (:results (result :scs (unsigned-reg)))
         (:result-types positive-fixnum)
         (:generator 15
           (multiple-value-bind (word extra) (floor index ,elements-per-word)
             (loadw result object (+ word vector-data-offset)
                    other-pointer-lowtag)
             (unless (zerop extra)
               (inst shr result (* extra ,bits)))
             (unless (= extra ,(1- elements-per-word))
               (inst and result ,(1- (ash 1 bits)))))))
       (define-vop (,(symbolicate 'data-vector-set/ type))
         (:note "inline array store")
         (:translate data-vector-set)
         (:policy :fast-safe)
         (:args (object :scs (descriptor-reg))
                (index :scs (unsigned-reg) :target ecx)
                (value :scs (unsigned-reg immediate) :target result))
         (:arg-types ,type positive-fixnum positive-fixnum)
         (:results (result :scs (unsigned-reg)))
         (:result-types positive-fixnum)
         (:temporary (:sc unsigned-reg) word-index)
         (:temporary (:sc unsigned-reg) old)
         (:temporary (:sc unsigned-reg :offset ecx-offset) ecx)
         (:generator 25
           (move word-index index)
           (inst shr word-index ,bit-shift)
           (inst mov old
                 (make-ea :qword :base object :index word-index
                          :scale n-word-bytes
                          :disp (- (* vector-data-offset n-word-bytes)
                                   other-pointer-lowtag)))
           (move ecx index)
           ;; We used to mask ECX for all values of BITS, but since
           ;; Intel's documentation says that the chip will mask shift
           ;; and rotate counts by 63 automatically, we can safely move
           ;; the masking operation under the protection of this UNLESS
           ;; in the bit-vector case.  --njf, 2006-07-14
           ,@(unless (= bits 1)
               `((inst and ecx ,(1- elements-per-word))
                 (inst shl ecx ,(1- (integer-length bits)))))
           (inst ror old :cl)
           (unless (and (sc-is value immediate)
                        (= (tn-value value) ,(1- (ash 1 bits))))
             (inst and old ,(lognot (1- (ash 1 bits)))))
           (sc-case value
             (immediate
              (unless (zerop (tn-value value))
                (inst or old (logand (tn-value value) ,(1- (ash 1 bits))))))
             (unsigned-reg
              (inst or old value)))
           (inst rol old :cl)
           (inst mov (make-ea :qword :base object :index word-index
                              :scale n-word-bytes
                              :disp (- (* vector-data-offset n-word-bytes)
                                       other-pointer-lowtag))
                 old)
           (sc-case value
             (immediate
              (inst mov result (tn-value value)))
             (unsigned-reg
              (move result value)))))
       (define-vop (,(symbolicate 'data-vector-set-c/ type))
         (:translate data-vector-set)
         (:policy :fast-safe)
         (:args (object :scs (descriptor-reg))
                (value :scs (unsigned-reg immediate) :target result))
         (:arg-types ,type (:constant low-index) positive-fixnum)
         (:temporary (:sc unsigned-reg) mask-tn)
         (:info index)
         (:results (result :scs (unsigned-reg)))
         (:result-types positive-fixnum)
         (:temporary (:sc unsigned-reg :to (:result 0)) old)
         (:generator 20
           (multiple-value-bind (word extra) (floor index ,elements-per-word)
             (inst mov old
                   (make-ea :qword :base object
                            :disp (- (* (+ word vector-data-offset)
                                        n-word-bytes)
                                     other-pointer-lowtag)))
             (sc-case value
               (immediate
                (let* ((value (tn-value value))
                       (mask ,(1- (ash 1 bits)))
                       (shift (* extra ,bits)))
                  (unless (= value mask)
                    (inst mov mask-tn (ldb (byte 64 0)
                                           (lognot (ash mask shift))))
                    (inst and old mask-tn))
                  (unless (zerop value)
                    (inst mov mask-tn (ash value shift))
                    (inst or old mask-tn))))
               (unsigned-reg
                (let ((shift (* extra ,bits)))
                  (unless (zerop shift)
                    (inst ror old shift))
                  (inst mov mask-tn (lognot ,(1- (ash 1 bits))))
                  (inst and old mask-tn)
                  (inst or old value)
                  (unless (zerop shift)
                    (inst rol old shift)))))
             (inst mov (make-ea :qword :base object
                                :disp (- (* (+ word vector-data-offset)
                                            n-word-bytes)
                                         other-pointer-lowtag))
                   old)
             (sc-case value
               (immediate
                (inst mov result (tn-value value)))
               (unsigned-reg
                (move result value))))))))))
  (def-small-data-vector-frobs simple-bit-vector 1)
  (def-small-data-vector-frobs simple-array-unsigned-byte-2 2)
  (def-small-data-vector-frobs simple-array-unsigned-byte-4 4))
;;; And the float variants.

(define-vop (data-vector-ref/simple-array-single-float)
  (:note "inline array access")
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (any-reg)))
  (:arg-types simple-array-single-float positive-fixnum)
  (:temporary (:sc unsigned-reg) dword-index)
  (:results (value :scs (single-reg)))
  (:result-types single-float)
  (:generator 5
   (move dword-index index)
   (inst shr dword-index 1)
   (inst movss value (make-ea :dword :base object :index dword-index
                              :disp (- (* vector-data-offset
                                          n-word-bytes)
                                       other-pointer-lowtag)))))

(define-vop (data-vector-ref-c/simple-array-single-float)
  (:note "inline array access")
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-array-single-float (:constant low-index))
  (:results (value :scs (single-reg)))
  (:result-types single-float)
  (:generator 4
   (inst movss value (make-ea :dword :base object
                              :disp (- (+ (* vector-data-offset
                                             n-word-bytes)
                                          (* 4 index))
                                       other-pointer-lowtag)))))

(define-vop (data-vector-set/simple-array-single-float)
  (:note "inline array store")
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (any-reg))
         (value :scs (single-reg) :target result))
  (:arg-types simple-array-single-float positive-fixnum single-float)
  (:temporary (:sc unsigned-reg) dword-index)
  (:results (result :scs (single-reg)))
  (:result-types single-float)
  (:generator 5
   (move dword-index index)
   (inst shr dword-index 1)
   (inst movss (make-ea :dword :base object :index dword-index
                        :disp (- (* vector-data-offset
                                    n-word-bytes)
                                 other-pointer-lowtag))
         value)
   (unless (location= result value)
     (inst movss result value))))

(define-vop (data-vector-set-c/simple-array-single-float)
  (:note "inline array store")
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (value :scs (single-reg) :target result))
  (:info index)
  (:arg-types simple-array-single-float (:constant low-index)
              single-float)
  (:results (result :scs (single-reg)))
  (:result-types single-float)
  (:generator 4
   (inst movss (make-ea :dword :base object
                        :disp (- (+ (* vector-data-offset
                                       n-word-bytes)
                                    (* 4 index))
                                 other-pointer-lowtag))
         value)
   (unless (location= result value)
     (inst movss result value))))

(define-vop (data-vector-ref/simple-array-double-float)
  (:note "inline array access")
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (any-reg)))
  (:arg-types simple-array-double-float positive-fixnum)
  (:results (value :scs (double-reg)))
  (:result-types double-float)
  (:generator 7
   (inst movsd value (make-ea :qword :base object :index index :scale 1
                              :disp (- (* vector-data-offset
                                          n-word-bytes)
                                       other-pointer-lowtag)))))

(define-vop (data-vector-ref-c/simple-array-double-float)
  (:note "inline array access")
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-array-double-float (:constant low-index))
  (:results (value :scs (double-reg)))
  (:result-types double-float)
  (:generator 6
   (inst movsd value (make-ea :qword :base object
                              :disp (- (+ (* vector-data-offset
                                             n-word-bytes)
                                          (* 8 index))
                                       other-pointer-lowtag)))))

(define-vop (data-vector-set/simple-array-double-float)
  (:note "inline array store")
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (any-reg))
         (value :scs (double-reg) :target result))
  (:arg-types simple-array-double-float positive-fixnum double-float)
  (:results (result :scs (double-reg)))
  (:result-types double-float)
  (:generator 20
   (inst movsd (make-ea :qword :base object :index index :scale 1
                               :disp (- (* vector-data-offset
                                           n-word-bytes)
                                        other-pointer-lowtag))
         value)
   (unless (location= result value)
     (inst movsd result value))))

(define-vop (data-vector-set-c/simple-array-double-float)
  (:note "inline array store")
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (value :scs (double-reg) :target result))
  (:info index)
  (:arg-types simple-array-double-float (:constant low-index)
              double-float)
  (:results (result :scs (double-reg)))
  (:result-types double-float)
  (:generator 19
   (inst movsd (make-ea :qword :base object
                        :disp (- (+ (* vector-data-offset
                                       n-word-bytes)
                                    (* 8 index))
                                 other-pointer-lowtag))
         value)
   (unless (location= result value)
     (inst movsd result value))))


;;; complex float variants

(define-vop (data-vector-ref/simple-array-complex-single-float)
  (:note "inline array access")
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (any-reg)))
  (:arg-types simple-array-complex-single-float positive-fixnum)
  (:results (value :scs (complex-single-reg)))
  (:result-types complex-single-float)
  (:generator 5
    (let ((real-tn (complex-single-reg-real-tn value)))
      (inst movss real-tn (make-ea :dword :base object :index index
                                   :disp (- (* vector-data-offset
                                               n-word-bytes)
                                            other-pointer-lowtag))))
    (let ((imag-tn (complex-single-reg-imag-tn value)))
      (inst movss imag-tn (make-ea :dword :base object :index index
                                   :disp (- (+ (* vector-data-offset
                                                  n-word-bytes)
                                               4)
                                            other-pointer-lowtag))))))

(define-vop (data-vector-ref-c/simple-array-complex-single-float)
  (:note "inline array access")
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-array-complex-single-float (:constant low-index))
  (:results (value :scs (complex-single-reg)))
  (:result-types complex-single-float)
  (:generator 4
    (let ((real-tn (complex-single-reg-real-tn value)))
      (inst movss real-tn (make-ea :dword :base object
                                   :disp (- (+ (* vector-data-offset
                                                  n-word-bytes)
                                               (* 8 index))
                                            other-pointer-lowtag))))
    (let ((imag-tn (complex-single-reg-imag-tn value)))
      (inst movss imag-tn (make-ea :dword :base object
                                   :disp (- (+ (* vector-data-offset
                                                  n-word-bytes)
                                               (* 8 index) 4)
                                            other-pointer-lowtag))))))

(define-vop (data-vector-set/simple-array-complex-single-float)
  (:note "inline array store")
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (any-reg))
         (value :scs (complex-single-reg) :target result))
  (:arg-types simple-array-complex-single-float positive-fixnum
              complex-single-float)
  (:results (result :scs (complex-single-reg)))
  (:result-types complex-single-float)
  (:generator 5
    (let ((value-real (complex-single-reg-real-tn value))
          (result-real (complex-single-reg-real-tn result)))
      (inst movss (make-ea :dword :base object :index index
                           :disp (- (* vector-data-offset
                                       n-word-bytes)
                                    other-pointer-lowtag))
            value-real)
      (unless (location= value-real result-real)
        (inst movss result-real value-real)))
    (let ((value-imag (complex-single-reg-imag-tn value))
          (result-imag (complex-single-reg-imag-tn result)))
      (inst movss (make-ea :dword :base object :index index
                           :disp (- (+ (* vector-data-offset
                                          n-word-bytes)
                                       4)
                                    other-pointer-lowtag))
            value-imag)
      (unless (location= value-imag result-imag)
        (inst movss result-imag value-imag)))))

(define-vop (data-vector-set-c/simple-array-complex-single-float)
  (:note "inline array store")
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (value :scs (complex-single-reg) :target result))
  (:info index)
  (:arg-types simple-array-complex-single-float (:constant low-index)
              complex-single-float)
  (:results (result :scs (complex-single-reg)))
  (:result-types complex-single-float)
  (:generator 4
    (let ((value-real (complex-single-reg-real-tn value))
          (result-real (complex-single-reg-real-tn result)))
      (inst movss (make-ea :dword :base object
                           :disp (- (+ (* vector-data-offset
                                          n-word-bytes)
                                       (* 8 index))
                                    other-pointer-lowtag))
            value-real)
      (unless (location= value-real result-real)
        (inst movss result-real value-real)))
    (let ((value-imag (complex-single-reg-imag-tn value))
          (result-imag (complex-single-reg-imag-tn result)))
      (inst movss (make-ea :dword :base object
                           :disp (- (+ (* vector-data-offset
                                          n-word-bytes)
                                       (* 8 index) 4)
                                    other-pointer-lowtag))
            value-imag)
      (unless (location= value-imag result-imag)
        (inst movss result-imag value-imag)))))

(define-vop (data-vector-ref/simple-array-complex-double-float)
  (:note "inline array access")
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (any-reg)))
  (:arg-types simple-array-complex-double-float positive-fixnum)
  (:results (value :scs (complex-double-reg)))
  (:result-types complex-double-float)
  (:generator 7
    (let ((real-tn (complex-double-reg-real-tn value)))
      (inst movsd real-tn (make-ea :dword :base object :index index :scale 2
                                   :disp (- (* vector-data-offset
                                               n-word-bytes)
                                            other-pointer-lowtag))))
    (let ((imag-tn (complex-double-reg-imag-tn value)))
      (inst movsd imag-tn (make-ea :dword :base object :index index :scale 2
                                   :disp (- (+ (* vector-data-offset
                                                  n-word-bytes)
                                               8)
                                            other-pointer-lowtag))))))

(define-vop (data-vector-ref-c/simple-array-complex-double-float)
  (:note "inline array access")
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-array-complex-double-float (:constant low-index))
  (:results (value :scs (complex-double-reg)))
  (:result-types complex-double-float)
  (:generator 6
    (let ((real-tn (complex-double-reg-real-tn value)))
      (inst movsd real-tn (make-ea :qword :base object
                                   :disp (- (+ (* vector-data-offset
                                                  n-word-bytes)
                                               (* 16 index))
                                            other-pointer-lowtag))))
    (let ((imag-tn (complex-double-reg-imag-tn value)))
      (inst movsd imag-tn (make-ea :qword :base object
                                   :disp (- (+ (* vector-data-offset
                                                  n-word-bytes)
                                               (* 16 index) 8)
                                            other-pointer-lowtag))))))

(define-vop (data-vector-set/simple-array-complex-double-float)
  (:note "inline array store")
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (any-reg))
         (value :scs (complex-double-reg) :target result))
  (:arg-types simple-array-complex-double-float positive-fixnum
              complex-double-float)
  (:results (result :scs (complex-double-reg)))
  (:result-types complex-double-float)
  (:generator 20
    (let ((value-real (complex-double-reg-real-tn value))
          (result-real (complex-double-reg-real-tn result)))
      (inst movsd (make-ea :qword :base object :index index :scale 2
                           :disp (- (* vector-data-offset
                                       n-word-bytes)
                                    other-pointer-lowtag))
            value-real)
      (unless (location= value-real result-real)
        (inst movsd result-real value-real)))
    (let ((value-imag (complex-double-reg-imag-tn value))
          (result-imag (complex-double-reg-imag-tn result)))
      (inst movsd (make-ea :qword :base object :index index :scale 2
                           :disp (- (+ (* vector-data-offset
                                          n-word-bytes)
                                       8)
                                    other-pointer-lowtag))
            value-imag)
      (unless (location= value-imag result-imag)
        (inst movsd result-imag value-imag)))))

(define-vop (data-vector-set-c/simple-array-complex-double-float)
  (:note "inline array store")
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (value :scs (complex-double-reg) :target result))
  (:info index)
  (:arg-types simple-array-complex-double-float (:constant low-index)
              complex-double-float)
  (:results (result :scs (complex-double-reg)))
  (:result-types complex-double-float)
  (:generator 19
    (let ((value-real (complex-double-reg-real-tn value))
          (result-real (complex-double-reg-real-tn result)))
      (inst movsd (make-ea :qword :base object
                           :disp (- (+ (* vector-data-offset
                                          n-word-bytes)
                                       (* 16 index))
                                    other-pointer-lowtag))
            value-real)
      (unless (location= value-real result-real)
        (inst movsd result-real value-real)))
    (let ((value-imag (complex-double-reg-imag-tn value))
          (result-imag (complex-double-reg-imag-tn result)))
      (inst movsd (make-ea :qword :base object
                           :disp (- (+ (* vector-data-offset
                                          n-word-bytes)
                                       (* 16 index) 8)
                                    other-pointer-lowtag))
            value-imag)
      (unless (location= value-imag result-imag)
        (inst movsd result-imag value-imag)))))



;;; unsigned-byte-8
(macrolet ((define-data-vector-frobs (ptype)
  `(progn
    (define-vop (,(symbolicate "DATA-VECTOR-REF/" ptype))
      (:translate data-vector-ref)
      (:policy :fast-safe)
      (:args (object :scs (descriptor-reg))
             (index :scs (unsigned-reg)))
      (:arg-types ,ptype positive-fixnum)
      (:results (value :scs (unsigned-reg signed-reg)))
      (:result-types positive-fixnum)
      (:generator 5
        (inst movzx value
              (make-ea :byte :base object :index index :scale 1
                       :disp (- (* vector-data-offset n-word-bytes)
                                other-pointer-lowtag)))))
    (define-vop (,(symbolicate "DATA-VECTOR-REF-C/" ptype))
      (:translate data-vector-ref)
      (:policy :fast-safe)
      (:args (object :scs (descriptor-reg)))
      (:info index)
      (:arg-types ,ptype (:constant low-index))
      (:results (value :scs (unsigned-reg signed-reg)))
      (:result-types positive-fixnum)
      (:generator 4
        (inst movzx value
              (make-ea :byte :base object
                       :disp (- (+ (* vector-data-offset n-word-bytes) index)
                                other-pointer-lowtag)))))
    (define-vop (,(symbolicate "DATA-VECTOR-SET/" ptype))
      (:translate data-vector-set)
      (:policy :fast-safe)
      (:args (object :scs (descriptor-reg) :to (:eval 0))
             (index :scs (unsigned-reg) :to (:eval 0))
             (value :scs (unsigned-reg signed-reg) :target eax))
      (:arg-types ,ptype positive-fixnum positive-fixnum)
      (:temporary (:sc unsigned-reg :offset eax-offset :target result
                       :from (:argument 2) :to (:result 0))
                  eax)
      (:results (result :scs (unsigned-reg signed-reg)))
      (:result-types positive-fixnum)
      (:generator 5
        (move eax value)
        (inst mov (make-ea :byte :base object :index index :scale 1
                           :disp (- (* vector-data-offset n-word-bytes)
                                    other-pointer-lowtag))
              al-tn)
        (move result eax)))
    (define-vop (,(symbolicate "DATA-VECTOR-SET-C/" ptype))
      (:translate data-vector-set)
      (:policy :fast-safe)
      (:args (object :scs (descriptor-reg) :to (:eval 0))
             (value :scs (unsigned-reg signed-reg) :target eax))
      (:info index)
      (:arg-types ,ptype (:constant low-index)
                  positive-fixnum)
      (:temporary (:sc unsigned-reg :offset eax-offset :target result
                       :from (:argument 1) :to (:result 0))
                  eax)
      (:results (result :scs (unsigned-reg signed-reg)))
      (:result-types positive-fixnum)
      (:generator 4
        (move eax value)
        (inst mov (make-ea :byte :base object
                           :disp (- (+ (* vector-data-offset n-word-bytes) index)
                                    other-pointer-lowtag))
              al-tn)
        (move result eax))))))
  (define-data-vector-frobs simple-array-unsigned-byte-7)
  (define-data-vector-frobs simple-array-unsigned-byte-8))

;;; unsigned-byte-16
(macrolet ((define-data-vector-frobs (ptype)
    `(progn
      (define-vop (,(symbolicate "DATA-VECTOR-REF/" ptype))
        (:translate data-vector-ref)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg))
               (index :scs (unsigned-reg)))
        (:arg-types ,ptype positive-fixnum)
        (:results (value :scs (unsigned-reg signed-reg)))
        (:result-types positive-fixnum)
        (:generator 5
          (inst movzx value
                (make-ea :word :base object :index index :scale 2
                         :disp (- (* vector-data-offset n-word-bytes)
                                  other-pointer-lowtag)))))
      (define-vop (,(symbolicate "DATA-VECTOR-REF-C/" ptype))
        (:translate data-vector-ref)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg)))
        (:info index)
        (:arg-types ,ptype (:constant low-index))
        (:results (value :scs (unsigned-reg signed-reg)))
        (:result-types positive-fixnum)
        (:generator 4
          (inst movzx value
                (make-ea :word :base object
                         :disp (- (+ (* vector-data-offset n-word-bytes) (* 2 index))
                                  other-pointer-lowtag)))))
      (define-vop (,(symbolicate "DATA-VECTOR-SET/" ptype))
        (:translate data-vector-set)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg) :to (:eval 0))
               (index :scs (unsigned-reg) :to (:eval 0))
               (value :scs (unsigned-reg signed-reg) :target eax))
        (:arg-types ,ptype positive-fixnum positive-fixnum)
        (:temporary (:sc unsigned-reg :offset eax-offset :target result
                         :from (:argument 2) :to (:result 0))
                    eax)
        (:results (result :scs (unsigned-reg signed-reg)))
        (:result-types positive-fixnum)
        (:generator 5
          (move eax value)
          (inst mov (make-ea :word :base object :index index :scale 2
                             :disp (- (* vector-data-offset n-word-bytes)
                                      other-pointer-lowtag))
                ax-tn)
          (move result eax)))

      (define-vop (,(symbolicate "DATA-VECTOR-SET-C/" ptype))
        (:translate data-vector-set)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg) :to (:eval 0))
               (value :scs (unsigned-reg signed-reg) :target eax))
        (:info index)
        (:arg-types ,ptype (:constant low-index)
                    positive-fixnum)
        (:temporary (:sc unsigned-reg :offset eax-offset :target result
                         :from (:argument 1) :to (:result 0))
                    eax)
        (:results (result :scs (unsigned-reg signed-reg)))
        (:result-types positive-fixnum)
        (:generator 4
          (move eax value)
          (inst mov (make-ea :word :base object
                             :disp (- (+ (* vector-data-offset n-word-bytes)
                                         (* 2 index))
                                      other-pointer-lowtag))
                ax-tn)
          (move result eax))))))
  (define-data-vector-frobs simple-array-unsigned-byte-15)
  (define-data-vector-frobs simple-array-unsigned-byte-16))

(macrolet ((define-data-vector-frobs (ptype)
    `(progn
      (define-vop (,(symbolicate "DATA-VECTOR-REF/" ptype))
        (:translate data-vector-ref)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg))
               (index :scs (unsigned-reg)))
        (:arg-types ,ptype positive-fixnum)
        (:results (value :scs (unsigned-reg signed-reg)))
        (:result-types positive-fixnum)
        (:generator 5
          (inst movzxd value
                (make-ea :dword :base object :index index :scale 4
                         :disp (- (* vector-data-offset n-word-bytes)
                                  other-pointer-lowtag)))))
      (define-vop (,(symbolicate "DATA-VECTOR-REF-C/" ptype))
        (:translate data-vector-ref)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg)))
        (:info index)
        (:arg-types ,ptype (:constant low-index))
        (:results (value :scs (unsigned-reg signed-reg)))
        (:result-types positive-fixnum)
        (:generator 4
          (inst movzxd value
                (make-ea :dword :base object
                         :disp (- (+ (* vector-data-offset n-word-bytes)
                                     (* 4 index))
                                  other-pointer-lowtag)))))
      (define-vop (,(symbolicate "DATA-VECTOR-SET/" ptype))
        (:translate data-vector-set)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg) :to (:eval 0))
               (index :scs (unsigned-reg) :to (:eval 0))
               (value :scs (unsigned-reg signed-reg) :target rax))
        (:arg-types ,ptype positive-fixnum positive-fixnum)
        (:temporary (:sc unsigned-reg :offset rax-offset :target result
                         :from (:argument 2) :to (:result 0))
                    rax)
        (:results (result :scs (unsigned-reg signed-reg)))
        (:result-types positive-fixnum)
        (:generator 5
          (move rax value)
          (inst mov (make-ea :dword :base object :index index :scale 4
                                :disp (- (* vector-data-offset n-word-bytes)
                                         other-pointer-lowtag))
                eax-tn)
          (move result rax)))

      (define-vop (,(symbolicate "DATA-VECTOR-SET-C/" ptype))
        (:translate data-vector-set)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg) :to (:eval 0))
               (value :scs (unsigned-reg signed-reg) :target rax))
        (:info index)
        (:arg-types ,ptype (:constant low-index)
                    positive-fixnum)
        (:temporary (:sc unsigned-reg :offset rax-offset :target result
                         :from (:argument 1) :to (:result 0))
                    rax)
        (:results (result :scs (unsigned-reg signed-reg)))
        (:result-types positive-fixnum)
        (:generator 4
          (move rax value)
          (inst mov (make-ea :dword :base object
                             :disp (- (+ (* vector-data-offset n-word-bytes)
                                         (* 4 index))
                                      other-pointer-lowtag))
                eax-tn)
          (move result rax))))))
  (define-data-vector-frobs simple-array-unsigned-byte-32)
  (define-data-vector-frobs simple-array-unsigned-byte-31))

;;; simple-string

#!+sb-unicode
(progn
(define-vop (data-vector-ref/simple-base-string)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (unsigned-reg)))
  (:arg-types simple-base-string positive-fixnum)
  (:results (value :scs (character-reg)))
  (:result-types character)
  (:generator 5
    (inst movzx value
          (make-ea :byte :base object :index index :scale 1
                   :disp (- (* vector-data-offset n-word-bytes)
                            other-pointer-lowtag)))))

(define-vop (data-vector-ref-c/simple-base-string)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-base-string (:constant low-index))
  (:results (value :scs (character-reg)))
  (:result-types character)
  (:generator 4
    (inst movzx value
          (make-ea :byte :base object
                   :disp (- (+ (* vector-data-offset n-word-bytes) index)
                            other-pointer-lowtag)))))

(define-vop (data-vector-set/simple-base-string)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (index :scs (unsigned-reg) :to (:eval 0))
         (value :scs (character-reg) :target rax))
  (:arg-types simple-base-string positive-fixnum character)
  (:temporary (:sc character-reg :offset rax-offset :target result
                   :from (:argument 2) :to (:result 0))
              rax)
  (:results (result :scs (character-reg)))
  (:result-types character)
  (:generator 5
    (move rax value)
    (inst mov (make-ea :byte :base object :index index :scale 1
                       :disp (- (* vector-data-offset n-word-bytes)
                                other-pointer-lowtag))
          al-tn)
    (move result rax)))

(define-vop (data-vector-set-c/simple-base-string)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (value :scs (character-reg)))
  (:info index)
  (:arg-types simple-base-string (:constant (signed-byte 30)) character)
  (:temporary (:sc character-reg :offset eax-offset :target result
                   :from (:argument 1) :to (:result 0))
              rax)
  (:results (result :scs (character-reg)))
  (:result-types character)
  (:generator 4
    (move rax value)
    (inst mov (make-ea :byte :base object
                       :disp (- (+ (* vector-data-offset n-word-bytes) index)
                                other-pointer-lowtag))
          al-tn)
    (move result rax)))
) ; PROGN


#!-sb-unicode
(progn
(define-vop (data-vector-ref/simple-base-string)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (unsigned-reg)))
  (:arg-types simple-base-string positive-fixnum)
  (:results (value :scs (character-reg)))
  (:result-types character)
  (:generator 5
    (inst mov value
          (make-ea :byte :base object :index index :scale 1
                   :disp (- (* vector-data-offset n-word-bytes)
                            other-pointer-lowtag)))))

(define-vop (data-vector-ref-c/simple-base-string)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-base-string (:constant low-index))
  (:results (value :scs (character-reg)))
  (:result-types character)
  (:generator 4
    (inst mov value
          (make-ea :byte :base object
                   :disp (- (+ (* vector-data-offset n-word-bytes) index)
                            other-pointer-lowtag)))))

(define-vop (data-vector-set/simple-base-string)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (index :scs (unsigned-reg) :to (:eval 0))
         (value :scs (character-reg) :target result))
  (:arg-types simple-base-string positive-fixnum character)
  (:results (result :scs (character-reg)))
  (:result-types character)
  (:generator 5
    (inst mov (make-ea :byte :base object :index index :scale 1
                       :disp (- (* vector-data-offset n-word-bytes)
                                other-pointer-lowtag))
          value)
    (move result value)))

(define-vop (data-vector-set-c/simple-base-string)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (value :scs (character-reg)))
  (:info index)
  (:arg-types simple-base-string (:constant low-index) character)
  (:results (result :scs (character-reg)))
  (:result-types character)
  (:generator 4
   (inst mov (make-ea :byte :base object
                      :disp (- (+ (* vector-data-offset n-word-bytes) index)
                               other-pointer-lowtag))
         value)
   (move result value)))
) ; PROGN

#!+sb-unicode
(macrolet ((define-data-vector-frobs (ptype)
    `(progn
      (define-vop (,(symbolicate "DATA-VECTOR-REF/" ptype))
        (:translate data-vector-ref)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg))
               (index :scs (unsigned-reg)))
        (:arg-types ,ptype positive-fixnum)
        (:results (value :scs (character-reg)))
        (:result-types character)
        (:generator 5
          (inst movzxd value
                (make-ea :dword :base object :index index :scale 4
                         :disp (- (* vector-data-offset n-word-bytes)
                                  other-pointer-lowtag)))))
      (define-vop (,(symbolicate "DATA-VECTOR-REF-C/" ptype))
        (:translate data-vector-ref)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg)))
        (:info index)
        (:arg-types ,ptype (:constant low-index))
        (:results (value :scs (character-reg)))
        (:result-types character)
        (:generator 4
          (inst movzxd value
                (make-ea :dword :base object
                         :disp (- (+ (* vector-data-offset n-word-bytes)
                                     (* 4 index))
                                  other-pointer-lowtag)))))
      (define-vop (,(symbolicate "DATA-VECTOR-SET/" ptype))
        (:translate data-vector-set)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg) :to (:eval 0))
               (index :scs (unsigned-reg) :to (:eval 0))
               (value :scs (character-reg) :target rax))
        (:arg-types ,ptype positive-fixnum character)
        (:temporary (:sc character-reg :offset rax-offset :target result
                         :from (:argument 2) :to (:result 0))
                    rax)
        (:results (result :scs (character-reg)))
        (:result-types character)
        (:generator 5
          (move rax value)
          (inst mov (make-ea :dword :base object :index index :scale 4
                             :disp (- (* vector-data-offset n-word-bytes)
                                      other-pointer-lowtag))
                eax-tn)
          (move result rax)))

      (define-vop (,(symbolicate "DATA-VECTOR-SET-C/" ptype))
        (:translate data-vector-set)
        (:policy :fast-safe)
        (:args (object :scs (descriptor-reg) :to (:eval 0))
               (value :scs (character-reg) :target rax))
        (:info index)
        (:arg-types ,ptype (:constant low-index) character)
        (:temporary (:sc character-reg :offset rax-offset :target result
                         :from (:argument 1) :to (:result 0))
                    rax)
        (:results (result :scs (character-reg)))
        (:result-types character)
        (:generator 4
          (move rax value)
          (inst mov (make-ea :dword :base object
                             :disp (- (+ (* vector-data-offset n-word-bytes)
                                         (* 4 index))
                                      other-pointer-lowtag))
                eax-tn)
          (move result rax))))))
  (define-data-vector-frobs simple-character-string))

;;; signed-byte-8

(define-vop (data-vector-ref/simple-array-signed-byte-8)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (unsigned-reg)))
  (:arg-types simple-array-signed-byte-8 positive-fixnum)
  (:results (value :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 5
    (inst movsx value
          (make-ea :byte :base object :index index :scale 1
                   :disp (- (* vector-data-offset n-word-bytes)
                            other-pointer-lowtag)))))

(define-vop (data-vector-ref-c/simple-array-signed-byte-8)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-array-signed-byte-8 (:constant low-index))
  (:results (value :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 4
    (inst movsx value
          (make-ea :byte :base object
                   :disp (- (+ (* vector-data-offset n-word-bytes) index)
                            other-pointer-lowtag)))))

(define-vop (data-vector-set/simple-array-signed-byte-8)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (index :scs (unsigned-reg) :to (:eval 0))
         (value :scs (signed-reg) :target eax))
  (:arg-types simple-array-signed-byte-8 positive-fixnum tagged-num)
  (:temporary (:sc unsigned-reg :offset eax-offset :target result
                   :from (:argument 2) :to (:result 0))
              eax)
  (:results (result :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 5
    (move eax value)
    (inst mov (make-ea :byte :base object :index index :scale 1
                       :disp (- (* vector-data-offset n-word-bytes)
                                other-pointer-lowtag))
          al-tn)
    (move result eax)))

(define-vop (data-vector-set-c/simple-array-signed-byte-8)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (value :scs (signed-reg) :target eax))
  (:info index)
  (:arg-types simple-array-signed-byte-8 (:constant low-index)
              tagged-num)
  (:temporary (:sc unsigned-reg :offset eax-offset :target result
                   :from (:argument 1) :to (:result 0))
              eax)
  (:results (result :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 4
    (move eax value)
    (inst mov (make-ea :byte :base object
                       :disp (- (+ (* vector-data-offset n-word-bytes) index)
                                other-pointer-lowtag))
          al-tn)
    (move result eax)))

;;; signed-byte-16

(define-vop (data-vector-ref/simple-array-signed-byte-16)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (unsigned-reg)))
  (:arg-types simple-array-signed-byte-16 positive-fixnum)
  (:results (value :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 5
    (inst movsx value
          (make-ea :word :base object :index index :scale 2
                   :disp (- (* vector-data-offset n-word-bytes)
                            other-pointer-lowtag)))))

(define-vop (data-vector-ref-c/simple-array-signed-byte-16)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-array-signed-byte-16 (:constant low-index))
  (:results (value :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 4
    (inst movsx value
          (make-ea :word :base object
                   :disp (- (+ (* vector-data-offset n-word-bytes)
                               (* 2 index))
                            other-pointer-lowtag)))))

(define-vop (data-vector-set/simple-array-signed-byte-16)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (index :scs (unsigned-reg) :to (:eval 0))
         (value :scs (signed-reg) :target eax))
  (:arg-types simple-array-signed-byte-16 positive-fixnum tagged-num)
  (:temporary (:sc signed-reg :offset eax-offset :target result
                   :from (:argument 2) :to (:result 0))
              eax)
  (:results (result :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 5
    (move eax value)
    (inst mov (make-ea :word :base object :index index :scale 2
                       :disp (- (* vector-data-offset n-word-bytes)
                                other-pointer-lowtag))
          ax-tn)
    (move result eax)))

(define-vop (data-vector-set-c/simple-array-signed-byte-16)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (value :scs (signed-reg) :target eax))
  (:info index)
  (:arg-types simple-array-signed-byte-16 (:constant low-index) tagged-num)
  (:temporary (:sc signed-reg :offset eax-offset :target result
                   :from (:argument 1) :to (:result 0))
              eax)
  (:results (result :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 4
    (move eax value)
    (inst mov
          (make-ea :word :base object
                   :disp (- (+ (* vector-data-offset n-word-bytes)
                               (* 2 index))
                            other-pointer-lowtag))
          ax-tn)
    (move result eax)))


(define-vop (data-vector-ref/simple-array-signed-byte-32)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg))
         (index :scs (unsigned-reg)))
  (:arg-types simple-array-signed-byte-32 positive-fixnum)
  (:results (value :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 5
    (inst movsxd value
          (make-ea :dword :base object :index index :scale 4
                   :disp (- (* vector-data-offset n-word-bytes)
                            other-pointer-lowtag)))))

(define-vop (data-vector-ref-c/simple-array-signed-byte-32)
  (:translate data-vector-ref)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg)))
  (:info index)
  (:arg-types simple-array-signed-byte-32 (:constant low-index))
  (:results (value :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 4
    (inst movsxd value
          (make-ea :dword :base object
                   :disp (- (+ (* vector-data-offset n-word-bytes)
                               (* 4 index))
                            other-pointer-lowtag)))))

(define-vop (data-vector-set/simple-array-signed-byte-32)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (index :scs (unsigned-reg) :to (:eval 0))
         (value :scs (signed-reg) :target eax))
  (:arg-types simple-array-signed-byte-32 positive-fixnum tagged-num)
  (:temporary (:sc signed-reg :offset eax-offset :target result
                   :from (:argument 2) :to (:result 0))
              eax)
  (:results (result :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 5
    (move eax value)
    (inst mov (make-ea :dword :base object :index index :scale 4
                       :disp (- (* vector-data-offset n-word-bytes)
                                other-pointer-lowtag))
          eax-tn)
    (move result eax)))

(define-vop (data-vector-set-c/simple-array-signed-byte-32)
  (:translate data-vector-set)
  (:policy :fast-safe)
  (:args (object :scs (descriptor-reg) :to (:eval 0))
         (value :scs (signed-reg) :target eax))
  (:info index)
  (:arg-types simple-array-signed-byte-32 (:constant low-index) tagged-num)
  (:temporary (:sc signed-reg :offset eax-offset :target result
                   :from (:argument 1) :to (:result 0))
              eax)
  (:results (result :scs (signed-reg)))
  (:result-types tagged-num)
  (:generator 4
    (move eax value)
    (inst mov
          (make-ea :dword :base object
                   :disp (- (+ (* vector-data-offset n-word-bytes)
                               (* 4 index))
                            other-pointer-lowtag))
          eax-tn)
    (move result eax)))

;;; These vops are useful for accessing the bits of a vector
;;; irrespective of what type of vector it is.
(define-full-reffer raw-bits * 0 other-pointer-lowtag (unsigned-reg)
  unsigned-num %raw-bits)
(define-full-setter set-raw-bits * 0 other-pointer-lowtag (unsigned-reg)
  unsigned-num %set-raw-bits)
(define-full-reffer vector-raw-bits * vector-data-offset other-pointer-lowtag
  (unsigned-reg) unsigned-num %vector-raw-bits)
(define-full-setter set-vector-raw-bits * vector-data-offset other-pointer-lowtag
  (unsigned-reg) unsigned-num %set-vector-raw-bits)

;;;; miscellaneous array VOPs

(define-vop (get-vector-subtype get-header-data))
(define-vop (set-vector-subtype set-header-data))