http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57328
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
But vectorization reorders the loop iterations, thus say if some value is sNaN,
you'd get exceptions in different order. So, I'm afraid without -ffast-math
you can vectorize this only if the user says that the order of iterations
doesn't matter (say using OpenMP 4.0 #pragma omp simd or Cilk+ #pragma simd).
