These tests are testing changes that aren't present in older runtimes:
test/stdlib/SwiftValueNSObject.swift
test/stdlib/SwiftObjectNSObject.swift
test/stdlib/BridgeEquatableToObjC.swift
And this test looks for some wording that's different on older runtimes. This one already does availability checks, so we change the requirements to SwiftStdlib 5.11:
test/Casting/CastTraps.swift.gyb
When a Swift struct gets bridged to Obj-C, we box it into an opaque
`_SwiftValue` Obj-C object. This object previously supported the
Obj-C `isEqual:` and `hash` selectors by dispatching to the Swift
Hashable conformance, if present.
This does not work if the Swift struct conforms to Equatable but
does not conform to Hashable. This case seems to have been
overlooked in PR #4124.
This PR extends the earlier work to support `isEqual:` by
first checking for a Hashable conformance, then falling back
on an Equatable conformance if there is no Hashable conformance.
Resolves rdar://114294889