<s>
In	O
the	O
x86	B-Language
assembly	I-Language
programming	I-Language
language	I-Language
,	O
MOVHPD	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	O
SIMD	O
Extensions	O
(	O
SSE2	B-General_Concept
)	O
.	O
</s>
<s>
Specifically	O
,	O
MOVHPD	B-Device
causes	O
the	O
value	O
at	O
an	O
8-byte	O
memory	O
region	O
to	O
be	O
either	O
copied	O
to	O
or	O
assigned	O
from	O
the	O
upper	O
half	O
of	O
an	O
XMM	O
register	O
.	O
</s>
