<s>
In	O
the	O
x86	B-Language
assembly	I-Language
programming	I-Language
language	I-Language
,	O
MOVAPD	B-Device
is	O
the	O
name	O
for	O
a	O
specific	O
action	O
performable	O
by	O
modern	O
x86	B-Operating_System
processors	I-Operating_System
with	O
2nd-generation	O
Streaming	B-General_Concept
SIMD	I-General_Concept
Extensions	I-General_Concept
(	O
SSE2	B-General_Concept
)	O
.	O
</s>
<s>
MOVAPD	B-Device
is	O
one	O
of	O
the	O
fastest	O
ways	O
to	O
accomplish	O
this	O
effect	O
-	O
it	O
is	O
faster	O
than	O
the	O
comparable	O
instruction	O
MOVSD	O
.	O
</s>
<s>
Specifically	O
,	O
MOVAPD	B-Device
causes	O
a	O
16-byte-aligned	O
packed-doubles	O
source	O
to	O
be	O
copied	O
to	O
an	O
XMM	B-General_Concept
register	O
or	O
a	O
16-byte	O
memory	O
region	O
.	O
</s>
<s>
The	O
source	O
operand	O
can	O
be	O
either	O
an	O
XMM	B-General_Concept
register	O
(	O
xmm2	O
)	O
or	O
a	O
memory	O
address	O
(	O
m128	O
)	O
.	O
</s>
<s>
The	O
destination	O
operand	O
can	O
be	O
either	O
an	O
XMM	B-General_Concept
register	O
(	O
xmm1	O
)	O
or	O
a	O
memory	O
address	O
(	O
m128	O
)	O
.	O
</s>
