[PATCH] x86/Intel: SHLD/SHRD have dual meaning

[Hongtao Liu]

On Mon, Apr 22, 2024 at 3:44 PM Cui, Lili <lili.cui@intel.com> wrote:
>
> > On 22.04.2024 06:09, Hongtao Liu wrote:
> > > On Fri, Apr 19, 2024 at 5:29 PM Jan Beulich <jbeulich@suse.com> wrote:
> > >>
> > >> Since we uniformly permit D suffixes in Intel mode whenever in AT&T
> > >> mode an L suffix may be used, we need to be consistent with this.
> > > I think we need to forbid the D suffix for APX NDD SHL/SHR under Intel
> > > mode to avoid ambiguity.
> >
> > Hmm. Special casing just two insns is out of question imo (in fact that's what
> > is - unintentionally - partly happening prior to the change here).
> >
I know  the suffix L is needed in AT&T mode to specify the operand
size to avoid ambiguity.
But why do we need the suffix D for Intel mode?



-- 
BR,
Hongtao