help wrt semantics / primops for pure prefetches

[Carter Schonwald]

I've gotten some feedback and suggestions on IRC from Edwardk,
i'm currently massaging the new  (useful!) form through validate,
feedback on https://phabricator.haskell.org/D350 would be appreciated!

On Sat, Nov 22, 2014 at 12:43 AM, Carter Schonwald <
carter.schonwald at gmail.com> wrote:

> Hey Everyone,
> in
> https://ghc.haskell.org/trac/ghc/ticket/9353
> and
> https://phabricator.haskell.org/D350
>
> is some preliminary work to fix up how the pure versions of the prefetch
> primops work is laid out and prototyped.
>
> However, while it nominally fixes up some of the problems with how the
> current pure prefetch apis are fundamentally borken,  the simple design in
> D350 isn't quite ideal, and i sketch out some other ideas in the associated
> ticket #9353
>
> I'd like to make sure  pure prefetch in 7.10 is slightly less broken than
> in 7.8, but either way, its pretty clear that working out the right fixed
> up design wont happen till 7.12. Ie, whatever makes 7.10, there WILL have
> to be breaking changes to fix those primops for 7.12
>
> thanks and any feedback / thoughts appreciated
> -Carter
>
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