[PATCH] D132754: [clang] Add __is_target_variant_{os,environment} builtins

[Nico Weber via Phabricator via cfe-commits]

thakis added a comment.

Another patch to make open-source clang more like Xcode's clang, needed to parse system headers.

https://github.com/nico/hack/blob/main/notes/catalyst.md has some background information on catalyst triples and zippered code.


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  https://reviews.llvm.org/D132754/new/

https://reviews.llvm.org/D132754