[LLVMdev] Fetching the functions in C files

Amir H. Ashouri
2014-10-21T23:41:30Z

Thanks for the answer John.

I checked the llvm-extract and it works, but my concern is if the output of
the extract could be saved as .ll instead of .bc. Sort of human-readable
format so that I can parse it. Otherwise, it is better to parse the foo.ll
file right away instead of using the extract tool.

Please correct me if I am wrong.

Thanks,

-Amir

On Tue, Oct 21, 2014 at 7:02 PM, John Criswell <jtcriswel at gmail.com>
wrote:

>  On 10/21/14, 5:27 PM, Amir H. Ashouri wrote:
>
> Hello Everyone,
>
>  Just subscribed to the mailing list.
>
>  I was wondering how I am going to fetch each functions of a specific
> source code file (c/c++) using the LLVM framework. For instance, I would
> like to apply certain passes using llvm-opt on certain functions not the
> whole file.
>
>  I would appreciate any hints or idea leading me about the starting point.
>
>
> You might be able to use the llvm-extract tool to pull out the functions
> you want into a separate bitcode file and then use opt to optimize them.
> You'd then need to create a second bitcode file that contains the
remaining
> functions (using llvm-extract again).  Finally, you'd take the
optimized
> bitcode file and the bitcode file containing the other functions and link
> them together using clang and libLTO or the llvm-link tool.
>
> Regards,
>
> John Criswell
>
>
>  Regards,
>
>  -Amir
>
>
> _______________________________________________
> LLVM Developers mailing listLLVMdev at cs.uiuc.edu
http://llvm.cs.uiuc.eduhttp://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>
>
> --
> John Criswell
> Assistant Professor
> Department of Computer Science, University of
Rochesterhttp://www.cs.rochester.edu/u/criswell
>
>
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