[LLVMdev] Fetching the functions in C files

Markus Timpl
2014-10-21T23:51:19Z

You can use llvm-dis to turn .bc files into .ll files.
Am 22.10.2014 01:44 schrieb "Amir H. Ashouri" <amirhossein.ashouri
at gmail.com
>:

> 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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