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