https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85236
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> --- clang does not implement this intrinsics either and there is no issue filed there about it either (I am kinda of shocked). Note ICX (which is the new ICC but with using clang/LLVM) does and it calls __svml_atan2f8_e9 directly. Looks like SIMD-everywhere has implement it though, see https://github.com/simd-everywhere/simde/issues/40 and https://github.com/simd-everywhere/simde/commit/5b28b3d4672a9cc0616d5d6813b8e31e9bde8148
