(:arg words any-reg ecx-offset)
(:res result descriptor-reg edx-offset))
(inst mov result (+ (1- (ash 1 n-lowtag-bits))
- (* vector-data-offset word-bytes)))
+ (* vector-data-offset n-word-bytes)))
(inst add result words)
- (inst and result (lognot sb!vm:lowtag-mask))
+ (inst and result (lognot lowtag-mask))
(pseudo-atomic
(allocation result result)
(inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))