[Mesa-dev] [PATCH 01/22] glsl: Reorder optimization-passes

[Matt Turner]

On Sat, Jan 17, 2015 at 8:31 AM, Thomas Helland
<thomashelland90 at gmail.com> wrote:
> 2015-01-03 22:48 GMT+01:00 Matt Turner <mattst88 at gmail.com>:
>> On Sat, Jan 3, 2015 at 11:18 AM, Thomas Helland
>> <thomashelland90 at gmail.com> wrote:
>>> This allows opt_algebraic to resolve open-coded
>>> saturates into ir_unop_saturate before we potentially
>>> mess it up by removing the min or max in min/max-pruning.
>>>
>>> Since we are now emitting more free saturates on i965
>>> this gives us some decrease in instruction count.
>>>
>>> total instructions in shared programs: 1317459 -> 1317065 (-0.03%)
>>> instructions in affected programs:     4084 -> 3690 (-9.65%)
>>> GAINED:                                0
>>> LOST:                                  0
>>
>> You're definitely onto something here. On our collection of shaders:
>>
>> total instructions in shared programs: 5876617 -> 5875919 (-0.01%)
>> instructions in affected programs:     9443 -> 8745 (-7.39%)
>>
>> with some fragment shaders hurt in Natural Selection 2 and Kerbal Space program.
>>
>> I'll investigate these.
>
> Hi Matt,
>
> Don't want to be a nuisance (if that is even the right word?
> English is not my native tongue), but did you find the
> time to look at these regressions?

Nuisance is indeed the right word, but you are not being one. :)

I'll definitely look into this. Sorry that I haven't had a chance yet.