[ghc-steering-committee] Please review: Int8/Word8, Shepherd: Simon Marlow

[Simon Peyton Jones]

OK with me.  (Though I have not really focused on the detail.)

Simon

From: ghc-steering-committee [mailto:ghc-steering-committee-bounces at haskell.org] On Behalf Of Simon Marlow
Sent: 22 February 2018 11:47
To: Joachim Breitner <mail at joachim-breitner.de>
Cc: ghc-steering-committee at haskell.org
Subject: Re: [ghc-steering-committee] Please review: Int8/Word8, Shepherd: Simon Marlow

I recommend that we accept this proposal.
The proposal itself I think is uncontroversial: the current situation is somewhat historical; we realised when implementing the Data.Int and Data.Word libraries that it would be easier to build on top of a small family of narrow# primitives than to implement full sized types, so we took the shortest route at the time. That stopgap has served well up to this point, but we're missing some functionality that proper sized types would give us: better packing of unboxed fields in constructors, and in general better consistency in the internals (e.g. I think sized types will allow the removal of some ugly hacks in the FFI to do with calling external functions that take small integer arguments).
So, while the proposal itself is uncontroversial, I expect there to be a lot to do at the code review stage to ensure we integrate this smoothly (e.g. the issues around calling conventions and LLVM integration). But that's not a concern for this committee, so I recommend we just accept.
Cheers
Simon

On 8 February 2018 at 03:40, Joachim Breitner <mail at joachim-breitner.de<mailto:mail at joachim-breitner.de>> wrote:
Dear Committee,

this is your secretary speaking:

Small types like `Int8#`/`Word8#` were proposed
https://github.com/ghc-proposals/ghc-proposals/pull/74<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fghc-proposals%2Fghc-proposals%2Fpull%2F74&data=04%7C01%7Csimonpj%40microsoft.com%7Cd5b8e0a627814b24f58408d579ea000a%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636548968299549878%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwifQ%3D%3D%7C-1&sdata=TFYYSNIhD%2BxwBFD6JoHmHMqcLMP8VDR%2FrP8ZI%2BE8v0o%3D&reserved=0>

I propose Simon Marlow as the Shepherd.

Simon, please reach consensus as described in
https://github.com/ghc-proposals/ghc-proposals#committee-process<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fghc-proposals%2Fghc-proposals%23committee-process&data=04%7C01%7Csimonpj%40microsoft.com%7Cd5b8e0a627814b24f58408d579ea000a%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636548968299549878%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwifQ%3D%3D%7C-1&sdata=%2B3Av3hjglae%2BbUENN03KHmqCqlAlVS5vED3eW3NltPA%3D&reserved=0>

I suggest you make a recommendation about the decision, maybe point out
debatable points, and assume that anyone who stays quiet agrees with
you.

Thanks,
Joachim
--
Joachim Breitner
  mail at joachim-breitner.de<mailto:mail at joachim-breitner.de>
  http://www.joachim-breitner.de/<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.joachim-breitner.de%2F&data=04%7C01%7Csimonpj%40microsoft.com%7Cd5b8e0a627814b24f58408d579ea000a%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636548968299706143%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwifQ%3D%3D%7C-1&sdata=8BW0RQKj67ivdkrbRQvRbKi%2FgdyX%2Fpjf4%2FasummzAUA%3D&reserved=0>

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