D1428: Rework treatment of wildcards

Ben Gamari ben at well-typed.com
Thu Nov 26 17:11:55 UTC 2015

Simon Peyton Jones <simonpj at microsoft.com> writes:

> Ben
> So that you know, the state of play is:
> * wip/spj-wildcard-refactor is fully up to speed with HEAD
> * It validates except for perf/compiler/T3064 (8% loss)
> * It does need a decent commit message
> I'd really like this in 8.0:
>  - It's a big patch, so not having it will lead to lots of
>    tiresome cross-branch porting
>  - It does fix things in the wildcard story
> Of these the former is the more important.
> The only think holding me up is that I really don't understand the
> perf regression. It seems to be in the simplifier, which I have not
> touched! Working on it. But in the worst case I can commit and open a
> ticket for the perf regression
Thanks for the update!

Don't worry, there's still time as we're still waiting for D808 which
will likely be at least a few more days. Let me know if I can be of


- Ben
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 472 bytes
Desc: not available
URL: <http://mail.haskell.org/pipermail/ghc-devs/attachments/20151126/88939c2c/attachment.sig>

More information about the ghc-devs mailing list