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...MPX that have 4 hardware bounds registers that need keeping in sync with pointers. I am a bit skeptical about the need for pointer types; I don’t think it is the right level of abstraction for an instruction selector. The processors I know about with separate address and data registers (Blackfin, m86k, TriCore) would be modeled perfectly by the register bank labels in the proposal. Won’t that work for your case? Thanks, /jakob

...9 Aug 2013, at 22:15, Jakob Stoklund Olesen <stoklund at 2pi.dk> wrote: > I am a bit skeptical about the need for pointer types; I don’t think it is the right level of abstraction for an instruction selector. The processors I know about with separate address and data registers (Blackfin, m86k, TriCore) would be modeled perfectly by the register bank labels in the proposal. > > Won’t that work for your case? It might work, although given that our fat pointers are not integers I'm not sure how you think we should represent them. We can represent them as i256, but that would b...

...13, at 22:15, Jakob Stoklund Olesen <stoklund at 2pi.dk> wrote: > >> I am a bit skeptical about the need for pointer types; I don’t think it is the right level of abstraction for an instruction selector. The processors I know about with separate address and data registers (Blackfin, m86k, TriCore) would be modeled perfectly by the register bank labels in the proposal. >> >> Won’t that work for your case? > > It might work, although given that our fat pointers are not integers I'm not sure how you think we should represent them. We can represent them as i256...

On 9 Aug 2013, at 00:18, Jakob Stoklund Olesen <stoklund at 2pi.dk> wrote: > I am hoping that this proposal will generate a lot of feedback, and there are many different topics to discuss. When replying to this email, please change the subject header to something more specific, but keep the [global-isel] tag. Subject changed, but I'm not sure if helps... Overall, I really like this

I am hoping that this proposal will generate a lot of feedback, and there are many different topics to discuss. When replying to this email, please change the subject header to something more specific, but keep the [global-isel] tag. Thanks, /jakob Proposal for a Global Instruction Selector It is becoming evident that we need a replacement for the SelectionDAG-based instruction selector. This