[PATCH] D30136: [compiler-rt][builtins][WIP] Add _IsOSVersionAtLeast, to be used by ObjC's @available

[Alex Lorenz via Phabricator via llvm-commits]

arphaman added a comment.

I uploaded an empty diff by mistake, here's the test diff that I had in mind:

F3120131: test_availability.diff <https://reviews.llvm.org/F3120131>


https://reviews.llvm.org/D30136