<s>
A	O
binary	B-Application
recompiler	I-Application
is	O
a	O
compiler	B-Language
that	O
takes	O
executable	B-Application
binary	I-Application
files	O
as	O
input	O
,	O
analyzes	O
their	O
structure	O
,	O
applies	O
transformations	O
and	O
optimizations	O
,	O
and	O
outputs	O
new	O
optimized	O
executable	B-Application
binaries	I-Application
.	O
</s>
<s>
The	O
foundation	O
to	O
the	O
concepts	O
of	O
binary	B-Application
recompilation	I-Application
were	O
laid	O
out	O
by	O
Gary	O
Kildall	O
with	O
the	O
development	O
of	O
the	O
optimizing	O
assembly	O
code	O
translator	O
XLT86	B-Operating_System
in	O
1981	O
.	O
</s>
