[LLVMdev] Possible CellSPU Bug?

[B. Scott Michel]

 On Mon, 31 Jan 2011 11:34:05 -0600, greened at obbligato.org wrote:
> Kalle Raiskila <kalle.raiskila at nokia.com> writes:
>
>> Looks like a bug to me. xshw (extend signed half-word(16bits) to
>> word(32bits)) takes a v8i16 and produces a v4i32. This has likely 
>> gone
>> unnoticed as there is only one type of vector register class (i.e.
>> VECREG) that is used for all vectors.
>>
>> Nice catch :) Are there more of these?
>
> I don't know.  I stopped implementing the stricter typechecking when 
> I
> saw this.  I wanted to make sure there wasn't some official trickery
> going on.  :)
>
>                            -Dave

 It's not official trickery. It's just the way things need to be done on 
 Cell.


 -scooter
-- 
 B. Scott Michel, Ph.D.
 Director, Computer Systems Research Department
 The Aerospace Corporation
 Ofc: (310) 336-5034
 Cell: (310) 426-4993