[Mesa-dev] [PATCH 1/2] i965: Remove never used RSR and RSL opcodes.

[Matt Turner]

On Wed, Aug 28, 2013 at 9:14 PM, Kenneth Graunke <kenneth at whitecape.org> wrote:
> On 08/28/2013 05:22 PM, Matt Turner wrote:
>>
>> Existed since the initial import, but appear to never have actually
>> existed.
>> ---
>> Rotate?
>>
>>   src/mesa/drivers/dri/i965/brw_defines.h  | 2 --
>>   src/mesa/drivers/dri/i965/brw_eu.h       | 2 --
>>   src/mesa/drivers/dri/i965/brw_eu_emit.c  | 2 --
>>   src/mesa/drivers/dri/i965/brw_fs_cse.cpp | 2 --
>>   4 files changed, 8 deletions(-)
>
>
> Both patches are:
> Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
>
> For what it's worth, RSR, RSL, and DPA2 are mentioned in the "Defeatured
> Instructions" section of the 965 PRM, Volume 4:
>
> "The following instructions are removed from Gen4 implementation mainly
>  due to implementation cost/schedule reasons.  They are candidates for
>  future generations."
>
> So they never actually existed; the Gen4 architects just thought they might
> be useful someday...and never implemented them.
>
> --Ken

Cool, thanks for the info. I'll update the commit messages.