[swift-dev] Changing how nominal type descriptors store type names

[Dmitri Gribenko]

On Fri, Jan 22, 2016 at 6:21 PM, Joe Groff via swift-dev
<swift-dev at swift.org> wrote:
> @"nominal type descriptor for Foo.Bar" = {
>   .name = relative reference to "Bar",
>   .moduleName = relative reference to "Foo"
> }
>
>
> The one exception is the standard library, which gets a special one-character mangling; we could maybe pack an "is in standard library" bit somewhere so we avoid storing an extra reference in that case. Any objections or concerns?

Since `moduleName` can't be 0, you can define 0 to mean "Swift
module".  You can also reserve a few low integers, say 0..<1024, for
other special names -- like __C.  Maybe others will come up in future.

Dmitri

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