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Author SHA1 Message Date
Alex Lorenz 701456b523 [darwin] add support for __isPlatformVersionAtLeast check for if (@available) 
The __isPlatformVersionAtLeast routine is an implementation of `if (@available)` check
that uses the _availability_version_check API on Darwin that's supported on
macOS 10.15, iOS 13, tvOS 13 and watchOS 6.

Differential Revision: https://reviews.llvm.org/D90367
 2020-11-02 16:28:09 -08:00
Erik Pilkington 9c42a8d43e [ObjC][CodeGen] CodeGen support for @available. 
CodeGens uses of @available into calls to the compiler-rt function
__isOSVersionAtLeast.

This commit is part of a feature that I proposed here:
http://lists.llvm.org/pipermail/cfe-dev/2016-July/049851.html

Differential revision: https://reviews.llvm.org/D27827

llvm-svn: 296015
 2017-02-23 21:08:08 +00:00