[LLVMdev] LLVM and GMP

[Anthony Danalis]

I added a simple little HowTo that might help you in the wiki.  It's  
about inserting a function call to an external library function, but  
it's implemented as an optimization pass instead of part of the front  
end.  It might still give you some pointers though.  Here is the link:
http://wiki.llvm.org/HowTo:_Insert_a_function_call

Anthony

On Mar 25, 2009, at 9:04 PM, Paulo Matias wrote:

> someguy wrote:
>> Oh. One more thing:
>>
>> Paulo, while your working out how to do what Chris said (making usage
>> of bigints into library calls), wouldn't it just warm your heart to
>> document the process on the wiki?
>>
>> </wiki pimping>
>>
>> On Wed, Mar 25, 2009 at 9:16 AM, someguy
>> <just.s0m3.guy+llvmdev at gmail.com> wrote:
>>
>>> Oh. I see. That way the bigints don't need a representation in  
>>> llvm IR... neat.
>>>
>>> Sorry for the misdirecton!
>>>
>>> On Wed, Mar 25, 2009 at 8:38 AM, Chris Lattner  
>>> <clattner at apple.com> wrote:
>>>
>>>> On Mar 24, 2009, at 11:20 PM, someguy wrote:
>>>>
>>>>
>>>>> I could be wrong, but I think that you may need to add a 'big- 
>>>>> integer'
>>>>> intrinsic type to llvm.
>>>>>
>>>> No, please don't.  GMP is just another library like libc, your  
>>>> front-
>>>> end should just generate calls into it like any other library.   
>>>> This
>>>> is similar to how we handle threading and many other "language
>>>> features".
>>>>
>>>> -Chris
>>>>
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>>>>
>>
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>>
> Hello
> First of all, thanks for your answers.
> I've been investigating on how to generate the calls to GMP, and how  
> to
> make the IRBuilder generate the IR containing them but, so far, I  
> found
> nothing about that. I read the documentation on LLVM, but I don't know
> how to do it yet. Some help would be a blessing, since I'm a bit lost.
>
> About documenting the process in the wiki, it seems a very good  
> idea, so
> anyone in the future, who has the same problem can easily solve it.  
> But
> first I need to find the solution myself! :-)
>
> Thanks in advance
> Paulo Matias
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