+ (emit-inits node block name result lowtag nil inits args)
+ (move-lvar-result node block locs lvar)))
+
+(defoptimizer ir2-convert-structure-allocation
+ ((dd slot-specs &rest args) node block name words type lowtag inits)
+ (let* ((lvar (node-lvar node))
+ (locs (lvar-result-tns lvar (list *backend-t-primitive-type*)))
+ (result (first locs)))
+ (aver (constant-lvar-p dd))
+ (aver (constant-lvar-p slot-specs))
+ (let* ((c-dd (lvar-value dd))
+ (c-slot-specs (lvar-value slot-specs))
+ (words (+ (sb!kernel::dd-instance-length c-dd) words)))
+ (emit-fixed-alloc node block name words type lowtag result lvar)
+ (emit-inits node block name result lowtag words `((:dd . ,c-dd) ,@c-slot-specs) args)
+ (move-lvar-result node block locs lvar))))
+
+(defoptimizer (initialize-vector ir2-convert)
+ ((vector &rest initial-contents) node block)
+ (let* ((vector-ctype (lvar-type vector))
+ (elt-ctype (if (array-type-p vector-ctype)
+ (array-type-specialized-element-type vector-ctype)
+ (bug "Unknow vector type in IR2 conversion for ~S."
+ 'initialize-vector)))
+ (saetp (find-saetp-by-ctype elt-ctype))
+ (lvar (node-lvar node))
+ (locs (lvar-result-tns lvar (list (primitive-type vector-ctype))))
+ (result (first locs))
+ (elt-ptype (primitive-type elt-ctype))
+ (tmp (make-normal-tn elt-ptype)))
+ (emit-move node block (lvar-tn node block vector) result)
+ (flet ((compute-setter ()
+ (macrolet
+ ((frob ()
+ (let ((*package* (find-package :sb!vm))
+ (clauses nil))
+ (map nil (lambda (s)
+ (when (sb!vm:saetp-specifier s)
+ (push
+ `(,(sb!vm:saetp-typecode s)
+ (lambda (index tn)
+ #!+(or x86 x86-64)
+ (vop ,(symbolicate "DATA-VECTOR-SET-WITH-OFFSET/"
+ (sb!vm:saetp-primitive-type-name s))
+ node block result index tn 0 tn)
+ #!-(or x86 x86-64)
+ (vop ,(symbolicate "DATA-VECTOR-SET/"
+ (sb!vm:saetp-primitive-type-name s))
+ node block result index tn tn)))
+ clauses)))
+ sb!vm:*specialized-array-element-type-properties*)
+ `(ecase (sb!vm:saetp-typecode saetp)
+ ,@(nreverse clauses)))))
+ (frob)))
+ (tnify (index)
+ (constant-tn (find-constant index))))
+ (let ((setter (compute-setter))
+ (length (length initial-contents)))
+ (dotimes (i length)
+ (emit-move node block (lvar-tn node block (pop initial-contents)) tmp)
+ (funcall setter (tnify i) tmp))))