Does it sound a good idea to implement "backend plugins"?

[Matthew Pickering]

Sounds like a reasonable idea to me. However, you should take some
time to propose a concrete interface as this part was not obvious in
the design of source plugins.

Matt
On Thu, Oct 4, 2018 at 2:56 PM Shao, Cheng <cheng.shao at tweag.io> wrote:
>
> Hi all,
>
> I'm thinking of adding "backend plugins" in the current Plugins
> mechanism which allows one to inspect/modify the IRs post simplifier
> pass (STG/Cmm), similar to the recently added source plugins for HsSyn
> IRs. This can be useful for anyone creating a custom GHC backend to
> target an experimental platform (e.g. the Asterius compiler which
> targets WebAssembly), and previously in order to retrieve those IRs
> from the regular pipeline, we need to use Hooks which is somewhat
> hacky.
>
> Does this sound a good idea to you? If so, I can open a trac ticket
> and a Phab diff for this feature.
>
> Best,
> Shao Cheng
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