asb wrote:

> > @dtcxzyw Could you please confirm the status of this core - is it 
> > commercially available, an academic test chip, something else?
> 
> It's maintained by Beijing Institute of Open Source Chip (BOSC), a non-profit 
> organziation founded by companies and researech institutions. It is provided 
> as an open-source CPU Core IP to the third party. It's not an academic 
> testchip.
> 
> It's not commercially available now, but there have already been a couple of 
> companies using it as the CPU Core IP. I cannot disclose the progress of 
> commercial chips now but hopefully we will see it soon. There are also some 
> companies using it on FPGAs now.

Thanks for clarifying. We don't really have an established policy here - it's 
obvious that commercial designs with active support should go in, and that some 
core design I hacked up over a weekend shouldn't but we haven't had the need to 
discuss anything in-between that. This patch and the scheduling model aren't 
large, but if there's thought of adding substantially more specific tuning it 
might be worth discussing those plans.

All that said, @dtcxzyw this is obviously far from your first patch so I have 
no concern about support being maintained. @preames suggested that we might 
want to think about deprecation policy so that we can be fairly liberal in 
accepting support for new CPUs/microarchs, yet remove them later if they become 
less relevant. Before you go ahead with the merge, it would be good to confirm 
that @preames agrees that this patch doesn't need to block on discussing that 
deprecation policy.

Thanks!

https://github.com/llvm/llvm-project/pull/70294
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