[Mesa-dev] Patches: R600: Improve load / store support for 8-bit and 16-bit types

[Aaron Watry]

I've finished running comparison tests on Cayman/Pitcairn.  The
descriptors series and 8/16-bit load/store support series both look
like they're in good condition for the cards I was able to test: Cedar
(5400), A6-3500 Llano and Pitcairn (7850).  No regressions spotted,
just improvements.

And as you said, the descriptors series fixed compute hangs for the
7850 on quite a few kernels which did comparison operations (max/clamp
kernels mostly, maybe some min).

You can definitely get a tested-by for both the descriptors series and this:
Tested-by: Aaron Watry <awatry at gmail.com

Quite a few of the tablegen changes are still a bit above my head, so
I don't feel qualified to give a comprehensive review on that.

--Aaron

On Mon, Aug 12, 2013 at 6:00 PM, Aaron Watry <awatry at gmail.com> wrote:
> It'll take me a while to attempt to parse everything that's going on
> in these patches (and your resource descriptor types series that this
> depends on), but I have sent it all through a piglit run on Evergreen
> (Cedar).  Everything was latest Mesa/LLVM/libclc upstream code as of
> today.
>
> Baseline: 567/855 tests passed
> Descriptors Series: 575/855 tests passed <-- Main differences here
> were with some int3 load/store issues which were just exposed recently
> and fixed by this series)
> Descriptors + char/short load/store series: 880/1119 tests passed
> (most of the additional tests and passes were char/short tests that no
> longer crash out).
>
> Specifically, I've double-checked the char/short/uchar/ushort built-in
> functions, as well as the char/short arithmetic tests, and things are
> looking good so far.  I'll try to test on Cayman/SI later.
>
> --Aaron
>
> On Mon, Aug 12, 2013 at 2:56 PM, Tom Stellard <tom at stellard.net> wrote:
>> Hi,
>>
>> The attached patches improve support for i8 and i16 loads and stores for
>> Evergreen and newer GPUs.  This means that byte-addressable stores are
>> now supported.
>>
>> Please review/test.
>>
>> -Tom
>>
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