llvm dev - Oct 2012 - [LLVMdev] library functions

Hi,

Is there any way to analyze library functions using LLVM, in the same 
manner as source code functions?

Thanks.
-Apala

Hi ,
I doubt LLVM has the infrastructure  in place to do so ,One way to
accomplish this  by implementing decompiler to convert library functions to
LLVM IR and  run the LLVM analyze pass over  converted LLVM IR ,Then revert
back from LLVM IR to your library format.


Thanks
~Umesh



On Thu, Oct 4, 2012 at 9:47 PM, apala guha <aguha at uchicago.edu> wrote:
> Hi,
>
> Is there any way to analyze library functions using LLVM, in the same
> manner as source code functions?
>
> Thanks.
> -Apala
> ______________________________**_________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>
http://lists.cs.uiuc.edu/**mailman/listinfo/llvmdev<http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev>
>
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Hi,
> I doubt LLVM has the infrastructure  in place to do so ,One way to
accomplish
> this  by implementing decompiler to convert library functions to LLVM IR
and
>   run the LLVM analyze pass over  converted LLVM IR ,Then revert back from
LLVM
> IR to your library format.
LLVM knows the semantics of many library functions, see SimplifyLibCalls.cpp.
However if you mean that you want LLVM to see the actual body of library
functions etc, then you are basically trying to do link-time optimization,
and the steps are something like this: build your library with -flto, build
your program with -flto, link them together using an LLVM aware linker.

Ciao, Duncan.
>
>
> Thanks
> ~Umesh
>
>
>
> On Thu, Oct 4, 2012 at 9:47 PM, apala guha <aguha at uchicago.edu
> <mailto:aguha at uchicago.edu>> wrote:
>
>     Hi,
>
>     Is there any way to analyze library functions using LLVM, in the same
manner
>     as source code functions?
>
>     Thanks.
>     -Apala
>     _________________________________________________
>     LLVM Developers mailing list
>     LLVMdev at cs.uiuc.edu <mailto:LLVMdev at cs.uiuc.edu>
http://llvm.cs.uiuc.edu
>     http://lists.cs.uiuc.edu/__mailman/listinfo/llvmdev
>     <http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev>
>
>
>
>
> _______________________________________________
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> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>