[Mesa-dev] Removing unused opcodes (TGSI, Mesa IR)

[Roland Scheidegger]

It looks like ARR is mildly useful though as hw often can implement it
natively and it benefits at least one state tracker (not that and
optimizing backend couldn't recognize round+arl but llvmpipe wouldn't at
least right now).
So, maybe it would be better to keep it for now.

Roland

Am 13.11.2014 um 17:40 schrieb Marek Olšák:
> Nine can lower ARR into ROUND+ARL easily.
> 
> Marek
> 
> On Thu, Nov 13, 2014 at 3:33 PM, Jose Fonseca <jfonseca at vmware.com> wrote:
>> It looks like ARR is generated, as src/gallium/state_trackers/nine/nine_shader.c has
>>
>> #define _OPI(o,t,vv1,vv2,pv1,pv2,d,s,h) \
>>     { D3DSIO_##o, TGSI_OPCODE_##t, { vv1, vv2 }, { pv1, pv2, }, d, s, h }
>>
>> [...]
>>
>>   _OPI(MOVA, ARR, V(2,0), V(3,0), V(0,0), V(0,0), 1, 1, NULL),
>>
>>
>> Jose
>>
>> ________________________________________
>> From: mesa-dev <mesa-dev-bounces at lists.freedesktop.org> on behalf of Eric Anholt <eric at anholt.net>
>> Sent: 13 November 2014 01:43
>> To: Ilia Mirkin
>> Cc: mesa-dev at lists.freedesktop.org
>> Subject: Re: [Mesa-dev] Removing unused opcodes (TGSI, Mesa IR)
>>
>> Ilia Mirkin <imirkin at alum.mit.edu> writes:
>>
>>> AFAIK at least some of these (NRM, ARR, probably others) were being used by
>>> the d3d9 state tracker. Not sure what its status is, but I believe the hope
>>> was to eventually get it into the tree.
>>
>> They've got code for lowering NRM and CND to sanity, and no use of ARR,
>> ARA, X2D, RFL, STR, SFL, or BRA.
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