[LLVMdev] Nested functions

[Vikram Adve]

This makes sense and sounds like it should work pretty well (assuming 
that only a few non-local variables have to be passed).  I think it 
requires that all nested functions are available, which should usually 
be true.

--Vikram
http://www.cs.uiuc.edu/~vadve
http://llvm.cs.uiuc.edu/

On Nov 22, 2004, at 2:21 PM, Vladimir Merzliakov wrote:

>>> I use this method with filtering unused in nested function args and 
>>> local vars
>>> in my YAFL frontend (not finished :(( - at this moment generate LLVM 
>>> bytecode but doesn't have all runtime suport code writed)
>>
>> So do you mean you pass static links for parent function stack frames 
>> as arguments?  How do you generate them?
>>
> Sorry, I must more careful read text.
> I use diff. method.
> All definitions in my YAFL parsed program AST have set of references 
> to expressions where it used.
> All expressions know what function body contain it.
> All functions know what function contain it (if nested).
>
> I iterate by nested functions in deep and cache information about used 
> declarations from parent function:
> args, locals, used grantparent declarations.
> Declaration used iff declaration used in code current processed nested 
> function or in it nested function bodies
> or in it parent(grantparents) nested functions called from (it or it 
> nested functions).
>
> Collect this information for non-nested function and all it nested 
> functions
> i genereted LLVM code for function and all nested functions adding 
> additional args to nested function for used declarations from parent 
> function.
>
> Sorry for maybe not clear algorithm but it work for me.
>
> Vladimir
>
>
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