On Fri, May 10, 2013 at 2:49 PM, Ian Romanick wrote:
> On 05/08/2013 07:21 PM, Matt Turner wrote:
>>
>> For vec4 equality comparisons we emit
>>
>> (and (and (and a b) c) d)
>
>
> Refresh my memory... what generates this? Is this from the compiler itself,
> or are people writing this code by
On 05/08/2013 07:21 PM, Matt Turner wrote:
For vec4 equality comparisons we emit
(and (and (and a b) c) d)
Refresh my memory... what generates this? Is this from the compiler
itself, or are people writing this code by hand? On old, vec4-centric
architectures, this sort of thing was usu
For vec4 equality comparisons we emit
(and (and (and a b) c) d)
which leads to three dependent instructions. We can reassociate the
operands which allows the first two instructions to be issued
independently. Turn it into:
(and (and a b) (and c d))
Do the same thing for ORs, used in vec4
