[swift-dev] Proposal: Opaque SIL values

[John McCall]

> On Jan 24, 2017, at 2:10 PM, Andrew Trick via swift-dev <swift-dev at swift.org> wrote:
> I’m sending out a proposal for fundamentally changing SIL. This work feeds into generic code optimization, resilience, semantic ARC, and SIL ownership. This was discussed at length back in October—some info went out on swift-dev—but I realized there hasn’t been a formal proposal. So here it is. I want to make sure enough people have seen this before pushing my PR that puts the infrastructure in place: https://github.com/apple/swift/pull/6922 <https://github.com/apple/swift/pull/6922>.
> 
> Rendered Proposal: https://gist.github.com/atrick/38063a90bf4a6ebae05fe83ea9ebc0b7 <https://gist.github.com/atrick/38063a90bf4a6ebae05fe83ea9ebc0b7>
> 
> Markdown:
> <silval-proposal-1.md>

We've already talked about this at length, so I just want to say for the record that it looks great, and thanks for taking this on.

What's the purpose of SILFunctionConventions?  To provide a context with which to interpret the information in SILFunctionType?

John.
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