Re: Feature request: Set the direction flag on x86/x64 register->register operations

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Fri, Dec 19, 2008 at 8:05 AM, Jan Beulich <jbeulich@novell.com> wrote:
>>>> "H.J. Lu" <hjl.tools@gmail.com> 19.12.08 16:54 >>>
>>On Fri, Dec 19, 2008 at 7:40 AM, Jan Beulich <jbeulich@novell.com> wrote:
>>>>>> "H.J. Lu" <hjl.tools@gmail.com> 19.12.08 16:25 >>>
>>>>On Fri, Dec 19, 2008 at 1:07 AM, Jan Beulich <jbeulich@novell.com> wrote:
>>>>> Also, the whole thing seems half-baked to me, as it only deals with
>>>>> alternative encodings using the 'D' bit. Using an .a suffix and handling
>>>>
>>>>".r" handles insns which can be encoded differently by swapping operands
>>>>in encoding:
>>>
>>> But I was thinking of movq (between mm or xmm registers), pextrw, or
>>
>>I will add movq/movd.  pextrx doesn't involve swap operand. It is
>>just a new encoding.
>>
>>> 64-bit mov between mm/xmm and memory in 64-bit mode.
>>>
>>
>>You can't swap operands in encoding when moving between
>>reg and memory.
>
> Sure - I was referring to the alternative encoding these have here too.
> I was generally referring to all possible alternative encodings, not just
> that of swapped operands.
>

I will look into those when there is a request.

-- 
H.J.