<s>
In	O
the	O
field	O
of	O
compiler	B-Language
implementation	O
in	O
computer	B-General_Concept
science	I-General_Concept
,	O
constructed	B-Application
product	I-Application
result	I-Application
analysis	I-Application
(	O
or	O
CPR	O
analysis	O
)	O
is	O
a	O
static	O
analysis	O
that	O
determines	O
which	O
functions	O
in	O
a	O
given	O
program	O
can	O
return	O
multiple	O
results	O
in	O
an	O
efficient	O
manner	O
.	O
</s>
<s>
Typically	O
,	O
this	O
means	O
returning	O
multiple	O
results	O
in	O
a	O
register	B-General_Concept
(	O
as	O
opposed	O
to	O
returning	O
a	O
pointer	O
to	O
a	O
tuple	B-Application
allocated	O
on	O
the	O
heap	B-General_Concept
whose	O
components	O
are	O
the	O
function	O
's	O
multiple	O
return	O
values	O
.	O
)	O
</s>
<s>
CPR	O
analysis	O
was	O
introduced	O
in	O
the	O
context	O
of	O
compiling	B-Language
Haskell	B-Language
(	O
a	O
lazy	O
functional	B-Language
language	I-Language
)	O
and	O
is	O
implemented	O
in	O
the	B-Application
Glasgow	I-Application
Haskell	I-Application
Compiler	I-Application
.	O
</s>
