[Intel-gfx] [PATCH] Encorage dead-code elimination for unused interpolation channels

[Eric Anholt]

On Wed, 17 Nov 2010 04:25:25 +0000, Peter Clifton <pcjc2 at cam.ac.uk> wrote:
> After some discussion with Eric on IRC, this is what I came up with
> (which appears to work!)

The other way (fix up dead code eliminator) ended up deleting the same
gen code while also deleting C code.  As I thought about it, since at
some point we may want to handle, say, key.linear_color, I think it'll
be easier to not split interpolation into two separate regs.
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