<s>
In	O
computer	B-General_Concept
science	I-General_Concept
,	O
and	O
specifically	O
in	O
compiler	B-Language
and	O
assembler	O
design	O
,	O
a	O
literal	B-Application
pool	I-Application
is	O
a	O
lookup	B-Data_Structure
table	I-Data_Structure
used	O
to	O
hold	O
literals	O
during	O
assembly	O
and	O
execution	B-General_Concept
.	O
</s>
<s>
Multiple	O
(	O
local	O
)	O
literal	B-Application
pools	I-Application
are	O
typically	O
used	O
only	O
for	O
computer	B-General_Concept
architectures	I-General_Concept
that	O
lack	O
branch	B-General_Concept
instructions	I-General_Concept
for	O
long	O
jumps	O
,	O
or	O
have	O
a	O
set	O
of	O
instructions	O
optimized	O
for	O
shorter	O
jumps	O
.	O
</s>
<s>
Examples	O
of	O
such	O
architectures	O
include	O
the	O
IBM	B-Application
System/360	I-Application
and	O
its	O
successors	O
,	O
which	O
had	O
a	O
number	O
of	O
instructions	O
which	O
took	O
12-bit	O
address	O
offsets	O
.	O
</s>
<s>
In	O
this	O
case	O
,	O
the	O
compiler	B-Language
would	O
create	O
a	O
literal	O
table	O
on	O
every	O
4K	O
page	O
;	O
any	O
branches	O
whose	O
target	O
was	O
less	O
than	O
4K	O
bytes	O
away	O
could	O
be	O
taken	O
immediately	O
;	O
longer	O
branches	O
required	O
an	O
address	O
lookup	B-Data_Structure
via	O
the	O
literal	O
table	O
.	O
</s>
<s>
The	O
entries	O
in	O
the	O
literal	B-Application
pool	I-Application
are	O
placed	O
into	O
the	O
object	B-Language
relocation	B-Library
table	I-Library
during	O
assembly	O
,	O
and	O
are	O
then	O
resolved	O
at	O
link	B-Application
edit	I-Application
time	I-Application
.	O
</s>
<s>
The	O
ARM	B-Architecture
architecture	I-Architecture
also	O
makes	O
use	O
of	O
multiple	O
local	O
pools	O
,	O
as	O
does	O
AArch64	B-Architecture
,	O
the	O
64-bit	O
extension	O
to	O
the	O
original	O
ARM	O
.	O
</s>
<s>
Another	O
architecture	O
making	O
use	O
of	O
multiple	O
local	O
pools	O
is	O
C-SKY	O
,	O
a	O
32-bit	O
architecture	O
designed	O
for	O
embedded	O
SoCs	B-Architecture
.	O
</s>
<s>
In	O
certain	O
ways	O
,	O
a	O
literal	B-Application
pool	I-Application
resembles	O
a	O
TOC	O
or	O
a	O
global	B-General_Concept
offset	I-General_Concept
table	I-General_Concept
(	O
GOT	O
)	O
,	O
except	O
that	O
the	O
implementation	O
is	O
considerably	O
simpler	O
,	O
and	O
there	O
may	O
be	O
multiple	O
literal	O
tables	O
per	O
object	B-Language
.	O
</s>
<s>
and	O
similar	O
instructions	O
in	O
IBM	B-Application
System/360	I-Application
assembly	O
language	O
,	O
</s>
<s>
which	O
are	O
compiled	B-Language
to	O
a	O
LOAD	O
with	O
a	O
PC-relative	O
addressing	B-Language
mode	I-Language
and	O
the	O
constant	O
stored	O
in	O
the	O
literal	B-Application
pool	I-Application
.	O
</s>
<s>
On	O
the	O
IBM	B-Device
S/390	I-Device
and	O
zSeries	O
architecture	O
,	O
the	O
GNU	O
assembler	O
,	O
"	O
as	O
"	O
(	O
which	O
is	O
invoked	O
during	O
the	O
gcc	B-Application
build	O
process	O
)	O
will	O
use	O
general-purpose	O
register	O
R13	O
to	O
store	O
a	O
pointer	O
to	O
the	O
literal	B-Application
pool	I-Application
.	O
</s>
<s>
Many	O
linkers	B-Application
,	O
by	O
default	O
,	O
store	O
each	O
unique	O
constant	O
once	O
,	O
in	O
a	O
single	O
combined	O
literal	B-Application
pool	I-Application
;	O
that	O
improves	O
code	O
size	O
.	O
</s>
<s>
The	O
Java	B-Language
virtual	I-Language
machine	I-Language
has	O
a	O
"	O
string	O
literal	B-Application
pool	I-Application
"	O
and	O
a	O
"	O
class	O
constant	O
pool	O
"	O
.	O
</s>
