llvm dev - Sep 2019 - Source Line/Filename + LLVM

Hello all,
I have  a rather simple question.  We compiled our code with debug
information and called Loc.getLineNumber() and Loc.getFilename() from the
DILocation library. However, these methods return 0 and NIL, respectively
for some calls. Most of the calls return valid filenames and src line
numbers, but a couple return 0/NIL.

What is happening here? Does anyone have any experience with this kind of
behavior?

Is it a problem with how I compiled my program? Is it an LLVM problem? Am I
error handling incorrectly?

Thanks,


Jiwon


-- 
Jiwon Joung
University of Michigan
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Sometimes instructions don't have locations.

Especially after optimization - there are cases where there's no
singular/unambiguous location that would be accurate for an
instruction, so no location is provided.

On Tue, Sep 10, 2019 at 12:04 PM Jiwon Joung via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> Hello all,
> I have  a rather simple question.  We compiled our code with debug
information and called Loc.getLineNumber() and Loc.getFilename() from the
DILocation library. However, these methods return 0 and NIL, respectively for
some calls. Most of the calls return valid filenames and src line numbers, but a
couple return 0/NIL.
>
> What is happening here? Does anyone have any experience with this kind of
behavior?
>
> Is it a problem with how I compiled my program? Is it an LLVM problem? Am I
error handling incorrectly?
>
> Thanks,
>
>
> Jiwon
>
>
> --
> Jiwon Joung
> University of Michigan
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
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