[cfe-dev] OpenMP pragmas transformation to library calls

Babis Chalios cchalios01 at qub.ac.uk
Wed Jun 10 11:02:06 PDT 2015


Is there any way to find out how does clang transform the OpenMP pragmas 
to the
corresponding library calls?

I m interested, for example, to find out how this code example:
void task_func(int a, int b)

int main()
     int i;

     #pragma omp parallel
     #pragma omp single
     for (i=0; i<10; ++i) {
         #pragma omp task
         task_func(i, i+1);
     #pragma omp taskwait
     return 0;

could be written, using direct calls to the LLVM OpenMP library. Does 
clang provide
a way to see the equivalent code with calls to the library?

I looked around a bit to find out if there is such way, or the 
equivalent information
on how I would use the library and handcode an application to use direct 
calls to it,
but I couldn't find something.

If anyone knows how I could achieve this or point to somewhere I could 
read something
relevant it would be very nice.


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