[Sema] Fix availability checking in inlinable code#33855

Merged

xymus merged 12 commits intoswiftlang:mainfrom

xymus:availability-inlinable

Oct 13, 2020

Commits on Oct 9, 2020

[Sema] Check availability in inlinable code using the explicit version
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[Sema] Test explicit versions in TypeRefinementContext
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[Sema] Consider unavailable functions as being unreachable
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[SIL] Don't print availability for unreachable/unavailable functions
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[Sema] Still use the current minimum deployment target as fallback
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[Sema] Prioritize unavailability check for protocol witnesses
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[Sema] Silence an inconsistent availability error for the stdlib
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[ClangImporter] Import unavailable decls as unavailable
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[Sema] Create a new TypeRefinementContext only for explicit inlinables
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[Sema] Accept unavailable constructors override in unavailable types
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[Sema] Use the deployment target as minimum OS version in swiftinterfaces
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Commits on Oct 13, 2020

[Sema] Report non-constructor unavailable overrides as warnings
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