Implementing OpenMP pragmas for the C front end

[David Edelsohn]

>>>>> Neil Booth writes:

>> ----------
>> /* ERROR - The flush directive cannot be the immediate
>> * substatement of an if statement. */
>> if (x!=0)
>> #pragma omp flush (x)

Neil> Surely not.  I think this is a *really really* bad idea; I wouldn't
Neil> support it going into GCC.  It's simply not the way C and C++ work.

	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.

David