[PATCH] D50318: Support Swift in platform availability attribute

[Michael Wu via Phabricator via cfe-commits]

michaelwu created this revision.
michaelwu added reviewers: manmanren, friss, doug.gregor.

This adds support for Swift platform availability attributes. It's largely a port of the changes made to https://github.com/apple/swift-clang/ for Swift availability attributes. Specifically, https://github.com/apple/swift-clang/commit/84b5a21c31cb5b0d7d958a478bc01964939b6952 and https://github.com/apple/swift-clang/commit/e5b87f265aede41c8381094bbf54e2715c8293b0 . The implementation of attribute_availability_swift is a little different and additional tests in test/Index/availability.c were added.


Repository:
  rC Clang

https://reviews.llvm.org/D50318

Files:
  include/clang/Basic/Attr.td
  include/clang/Basic/DiagnosticSemaKinds.td
  include/clang/Basic/Features.def
  lib/Parse/ParseDecl.cpp
  lib/Sema/SemaDeclAttr.cpp
  test/Index/availability.c
  test/Sema/attr-availability-swift.c

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