Implementing OpenMP pragmas for the C front end

[Neil Booth]

David Edelsohn wrote:-

> 	Unfortunately, this is a public standard.  Somehow we need to be
> compatible. 
> 
> 	What we really want is some way of converting
> 
> #pragma omp flush (x)
> 
> to
> 
> __builtin_omp_flush (x);
> 
> which is a more natural way of implementing this and would allow semantic
> error checking.

On second thoughts it's possibly not as bad as I thought.  I had in mind
that the #pragma callbacks would be conditional on parser state; of
course that needn't be the implementation.  The callbacks should happen
regardless, and the front end should ignore/reject appropriately.

Neil.