https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80325
--- Comment #2 from Sven Woop <m...@sven-woop.de> --- For AVX512 the Intel Intrinsics guide also mentioned the _mm512_undefined as alias for _mm512_undefined_ps. https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm512_undefined&techs=AVX_512 ICC and Clang support _mm512_undefined.
