Thinking about it some more I think I can come up with something
hopefully much better than this and my other patch "nir: shuffle fmuls
to allow const evaluation" combined.
On Thu, 2017-01-12 at 15:20 +1100, Timothy Arceri wrote:
> If one of the inputs to the multiplcation in ffma is the result
On Thu, 2017-01-12 at 15:20 +1100, Timothy Arceri wrote:
> If one of the inputs to the multiplcation in ffma is the result of
> an fmul there is a chance that we can reuse the result of that
> fmul in other ffma calls if we do the multiplication in the right
> order.
>
> For example it is a fairly
I can change this to use a symbol e.g. '!' for non const but since we
are moving towards helpers I did it this way for now.
On Thu, 2017-01-12 at 15:20 +1100, Timothy Arceri wrote:
> If one of the inputs to the multiplcation in ffma is the result of
> an fmul there is a chance that we can reuse th
If one of the inputs to the multiplcation in ffma is the result of
an fmul there is a chance that we can reuse the result of that
fmul in other ffma calls if we do the multiplication in the right
order.
For example it is a fairly common pattern for shaders to do something
similar to this:
const
