Richard Wei 82886bf77a [AutoDiff] Fix mangling of '@noDerivative' in function types. ...

`@noDerivative` was not mangled in function types, and was resolved incorrectly when there's an ownership specifier. It is fixed by this patch with the following changes:

* Add `NoDerivative` demangle node represented by a `k` operator.
    ```
    list-type ::= type identifier? 'k'? 'z'? 'h'? 'n'? 'd'?  // type with optional label, '@noDerivative', inout convention, shared convention, owned convention, and variadic specifier
    ```
* Fix `NoDerivative`'s overflown offset in `ParameterTypeFlags` (`7` -> `6`).
* In type decoder and type resolver where attributed type nodes are processed, add support for nested attributed nodes, e.g. `inout @noDerivative T`.
* Add `TypeResolverContext::InoutFunctionInput` so that when we resolve an `inout @noDerivative T` parameter, the `@noDerivative T` checking logic won't get a `TypeResolverContext::None` set by the caller.

Resolves rdar://75916833.

2021-04-07 15:42:12 -07:00

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