<s>
Intel	B-Device
ADX	I-Device
(	O
Multi-Precision	B-Device
Add-Carry	I-Device
Instruction	I-Device
Extensions	I-Device
)	O
is	O
Intel	O
's	O
arbitrary-precision	B-Algorithm
arithmetic	I-Algorithm
extension	O
to	O
the	O
x86	B-Operating_System
instruction	B-General_Concept
set	I-General_Concept
architecture	I-General_Concept
(	O
ISA	O
)	O
.	O
</s>
<s>
Intel	B-Device
ADX	I-Device
was	O
first	O
supported	O
in	O
the	O
Broadwell	B-General_Concept
microarchitecture	I-General_Concept
.	O
</s>
<s>
The	O
instruction	B-General_Concept
set	I-General_Concept
extension	O
contains	O
just	O
two	O
new	O
instructions	O
,	O
though	O
MULX	O
from	O
BMI2	O
is	O
also	O
considered	O
as	O
a	O
part	O
of	O
the	O
large	O
integer	O
arithmetic	O
support	O
.	O
</s>
<s>
Both	O
instructions	O
are	O
more	O
efficient	O
variants	O
of	O
the	O
existing	O
ADC	O
instruction	O
,	O
with	O
the	O
difference	O
that	O
each	O
of	O
the	O
two	O
new	O
instructions	O
affects	O
only	O
one	O
flag	O
,	O
where	O
ADC	O
as	O
a	O
signed	O
addition	O
may	O
set	O
both	O
overflow	O
and	O
carry	O
flags	O
,	O
and	O
as	O
an	O
old-style	O
x86	B-Operating_System
instruction	O
also	O
reset	O
the	O
rest	O
of	O
the	O
CPU	O
flags	O
.	O
</s>
