[Bug target/70525] generating 'vpandn' without the mode suffix, gnu as fails to assemble (-mavx512bw)

["jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70525

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 38177
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38177&action=edit
gcc6-pr70525.patch

As the patch shows, I see numerous problems.  E.g. the use of <mask_operand3_1>
in define_insn that really wasn't meant to be masked and doesn't have
<mask_name> in the name, but the use of <mask_operand3_1> still makes it
masked.
Or the existence of masked V*[QH]I andnot - we really can't support there, as
there are no VPANDNB and VPANDNW instructions.  Plus we have to make sure we
emit vpandnq or vpandnd for all 512-bit modes, there is no such vpandn
instruction.