On Wed, Jan 28, 2015 at 11:20 PM, Eric Anholt <e...@anholt.net> wrote:
> Jason Ekstrand <ja...@jlekstrand.net> writes: > > > I've got a patch I cooked up today that generalizes this a bit. I > haven't > > sent it yet because it lacks shader-db statistics. That said, I'm fine > > with merging this in the mean time. > > Not sure what generalization you're working on, but something that let > me have "any sort of bool" as an expression node, and that "and(flt(a, > b), flt(c, d))" was recognized as a bool would be nice for some of these > patterns. I was wondering if band/bor operations that were only defined > on bool arguments would be a good idea (even though they'd codegen just > like normal iand/ior), but then I got to thinking that this sounds like > just a specific case of generally wanting possible-value categorization > for SSA nodes. > Yeah, that's what it does. It's an extension to the current system to allow you to specify that a variable must match a certain type. I just sent the series. --Jason
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