[Caml-list] compiler implementation of partial applications.

[Caml-list] compiler implementation of partial applications.

[Jason Smith]

Hi All

I'm investigating certain compile time optimizations using type information. 
One in particular is reducing the runtime costs with calling polymorphic 
functions. My experience so far has mostly been with the internals of the ghc 
compiler and a language called Mondrian. The ghc compiler performs a runtime 
argument count check and generates a special closure called a PAP which 
consumes the appropriate no. of arguments.  Ideally this should be eliminated 
and appropriate transformations performed statically.

In particular I'm looking at how the following simplified example is compiled.

f1 = \a -> \b -> a + b;
f2 = \a -> + a;

map (if (..) then f1 else f2) [1, 2, 3];

I was wondering if you could either, a) point me to some resources which 
discuss ocaml's compilation model with reference to the above, or b) maybe 
comment on it urself?

Thankyou for your time.

Jason.

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