https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83488
--- Comment #14 from igor.v.tsimbalist at intel dot com --- ok, maybe I was wrong. But my point is OPTION_MASK_ISA_AVX512VL may be used with new/future instructions likely. This bit is in isa_flags set, which is full now, so it will require reordering isa_flags and isa_flags2 each time when such combinations might appear in future.