[cfe-dev] Matching 'OMPThreadPrivateDecl'( like #pragma omp threadprivate(var))

[Deepak Rajendrakumaran]

Hello,

Thank you for replying.

Yes,you are right. I am not getting the OMPThreadPrivateDecl nodes at all.

I tried printing out the AST for a small microbenchmark with OpenMP calls
using ' clang -Xclang -ast-dump -fopenmp <FileName>".  And if I have omp.h
header file included, it throws an error. Now I dug around a little bit
more, and have a couple  of questions. Based on what I see here-
http://llvm.org/devmtg/2014-10/Slides/Bataev-OpenMP.pdf, you seem to be the
right person to ask. Hope you do not mind.

I have build llvm from trunk(version 3.6.0).  Now to parse nodes, is the
normal vanilla llvm enough or do I need to make any omp specific
changes/build(like http://clang-omp.github.io/)??

p.s. My llvm build is fine for all other purposes. i have been using it for
a source-to-source compiler with libtooling and I have been running the
tool on NAS benchmarks(OpenMP NPB-C version). The only issue I am seeing is
with openMP pragmas.So what I am trying to say is that the llvm build works
fine for other cases and it is tested.

Regards,
Deepak


On Wed, Feb 25, 2015 at 3:54 AM, Bataev, Alexey <a.bataev at hotmail.com>
wrote:

>  Hi,
> are you sure that you have OMPThreadPrivateDecl nodes at all? Check that
> the code is compiled with -Xclang -fopenmp=libiomp5 option.
>
> Best regards,
> Alexey Bataev
> =============
> Software Engineer
> Intel Compiler Team
> Intel Corp.
>
> 25.02.2015 5:00, Deepak Rajendrakumaran пишет:
>
> This might sound silly. But I have been trying to
> match OMPThreadPrivateDecl' nodes using ASTMatcher. But I have been running
> into deadends.
>
>  What I am doing now is using ASTMatcher to match 'Decl' nodes and check
> if its a 'OMPThreadPrivateDecl'  by using a dyn_cast. But this does not
> work.
>
>  Alternatively I tried with isa<OMPThreadPrivateDecl>(*D) (which kind of
> does the same thing)
>
>   Can anyone point out how I can access the 'OMPThreadPrivateDecl nodes
> using ASTMAtcher or what I am doing wrong?
>
>  -Deepak
>
>
>
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