RFC: [PATCH] X86: Add pseudo prefixes to control encoding

[H.J. Lu]

On Fri, Nov 11, 2016 at 1:36 PM, Florian Weimer <fweimer@redhat.com> wrote:
> On 11/11/2016 10:34 PM, H.J. Lu wrote:
>
>> Control instruction length is one usage of pseudo prefixes.
>> Specifying instruction length will make assembler unnecessarily
>> more complex,  like how to encode "vmovaps (%rax),%xmm2"
>> with 7 bytes.
>
>
> Perhaps turn it into assertion of instruction length instead?
>

It may be useful.  But it doesn't fit well into my pseudo prefix
scheme.  A patch is welcome.

-- 
H.J.