On Thu, Oct 19, 2017 at 9:22 AM, Denis Bakhvalov <dendib...@gmail.com> wrote: > Hello! > > I have a hot inner loop which was vectorized by gcc, but I also want > compiler to unroll this loop by some factor. > It can be controled in clang with this pragma: > #pragma clang loop vectorize(enable) vectorize_width(8) > Please see example here: > https://godbolt.org/g/UJoUJn > > So I want to tell gcc something like this: > "I want you to vectorize the loop. After that I want you to unroll > this vectorized loop by some defined factor." > > I was playing with #pragma omp simd with the safelen clause, and > #pragma GCC optimize("unroll-loops") with no success. Compiler option > -fmax-unroll-times is not suitable for me, because it will affect > other parts of the code. > > Is it possible to achieve this somehow?
No. Richard. > > -- > Best regards, > Denis.
