Retrieving closure code during code generation

[Simon Marlow]

William Jones wrote:

> I am currently working with GHC's code generator and am wondering if 
> there is any way I can retrieve the Cmm for a function during the 
> compilation of another? I have looked at the information passed using 
> CgMonad and at the bindings in scope but these don't seem to be what I 
> need. As an example, when generating code for the tail call "map f xs," 
> can I retrieve the Cmm expressions that make up "f"?
> 
> Apologies if I am missing something glaringly obvious, thanks,

Not easily - if f is defined in the same module you'll have to save the Cmm 
for it in the monad so that you can extract it later.  But the Cmm for a 
single function might consist of lots of separate code blocks.

Perhaps it's better to explain what you're trying to do - there might be a 
better way to achieve it.  Also note that the code generator is in 
mid-rewrite; the new version of it starts with codeGen/StgCmm.hs.

Cheers,
	Simon