[llvm-dev] Loop unrolling pragma and OpenMP

[Johannes Doerfert via llvm-dev]

Michael implements the new features and knows :)

On 5/24/21 3:01 AM, ardi via llvm-dev wrote:
> Hi,
>
> Newer OpenMP versions include a construct for loop unrolling, but,
> however, I was wondering if the regular clang pragma for loop
> unrolling can be safely mixed with an OpenMP loop,without using the
> new OpenMP feature.
>
> I mean, is this guaranteed to work?
>
> #pragma omp parallel for
> #pragma clang loop unroll_count(N)
> for(i=0;i<n;i++) {
>     whatever();
> }
>
> Thanks a lot!
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