llvm dev - Oct 2010 - [LLVMdev] How to insert a CallInst which calls to a function from a library

Hello 
I want to write a pass which insert a new call to a library function 
but I don't know how to create a CallInst that calls a 
function like "pthread_create",
can anyone help me with this problem?



      
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On Sat, Oct 16, 2010 at 7:15 AM, hamed hamzehi <mohammadhamzehi at
yahoo.com>wrote:
> *Hello
> I want to write a pass which insert a new call to a library function
> but I don't know how to create a** CallInst that calls a
> function like "pthread_create",
> can anyone help** me with this problem?
> *
>
>
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
> First you have to create a declaration for the library function.  Use
Module::getOrInsertFunction for that; you'll get back a Value representing
the library function.  Once you've got that, pass that Value in as the
callee of the call instruction.
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