Pavel Yaskevich d3daa3c443 [clang/AST] Make it possible to use SwiftAttr in type context (#108631) ...

Swift ClangImporter now supports concurrency annotations on imported
declarations and their parameters/results, to make it possible to use
imported APIs in Swift safely there has to be a way to annotate
individual parameters and result types with relevant attributes that
indicate that e.g. a block is called on a particular actor or it accepts
a `Sendable` parameter.

To faciliate that `SwiftAttr` is switched from `InheritableAttr` which
is a declaration attribute to `DeclOrTypeAttr`. To support this
attribute in type context we need access to its "Attribute" argument
which requires `AttributedType` to be extended to include `Attr *` when
available instead of just `attr::Kind` otherwise it won't be possible to
determine what attribute should be imported.

2024-10-31 11:15:22 +00:00

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