Geoff Romer 505b1c86b9 Initial support for return forms (#6556) ...

The main changes here are:
- Introducing `InitForm` and `RefForm` to represent initializing and
reference forms (the two return forms currently supported by the
parser).
- Introducing the `FormType` singleton inst to represent their type
(i.e. `Core.Form`).
- Emitting an inst representing a function's declared return form as
part of handling the function signature.

The return form inst is currently ignored. Subsequent PRs will expose it
in `SemIR::Function` and use it to determine the form of call
expressions.

2026-01-07 00:54:18 +00:00

..

string_view.carbon

Initial support for return forms (#6556)

2026-01-07 00:54:18 +00:00