https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83488
--- Comment #21 from igor.v.tsimbalist at intel dot com --- Maybe I did more than expected :). Actually 512VNNI has VL bit according to recently published extension. Please see https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf I can go with my initial patch where I correct just OPTION_MASK_ISA_AVX512F_SET and leave everything else to an owner of 512vnni implementation. Ok with that?