[PATCH] D30977: [CodeGen] Emit a CoreFoundation link guard when @available is used

[Alex Lorenz via Phabricator via cfe-commits]

arphaman updated this revision to Diff 91977.
arphaman marked an inline comment as done.
arphaman added a comment.

The guard function is now `hidden`. I also adopted linker options as John suggested.


Repository:
  rL LLVM

https://reviews.llvm.org/D30977

Files:
  lib/CodeGen/CGObjC.cpp
  lib/CodeGen/CodeGenModule.cpp
  lib/CodeGen/CodeGenModule.h
  test/CodeGenObjC/availability-cf-link-guard.m

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