https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78884
--- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> --- Not sure how well this qualifies as a regression: prior to 4.9, there was no OpenMP SIMD support, so 4.8 just diagnoses a warning for an unrecognized omp-simd pragma.
