https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98387
--- Comment #3 from Daniel Han-Chen <danielhanchen at gmail dot com> --- (In reply to H.J. Lu from comment #2) > _mm_cmp_ps is an AVX intrinsic. Yep noticed _mm_cmp_ps is only in AVX. The weird part is it actually causes no errors when used on SSE only targets [ie Nehalem], and GCC continues compiling. Is this supposed to be normal behaivor?