Note that llvm::support::endianness has been renamed to
llvm::endianness while becoming an enum class as opposed to an enum.
This patch replaces llvm::support::{big,little,native} with
llvm::endianness::{big,little,native}.
This upstreams a part of the C++ namespaces support in Clang API Notes.
The complete patch was recently merged downstream in the Apple fork: https://github.com/apple/llvm-project/pull/7230.
This patch only adds the parts of the namespace support that can be cleanly applied on top of the API Notes infrastructure that was upstreamed previously.
Differential Revision: https://reviews.llvm.org/D159092
This adds the skeleton for serializing out the APINotes data from the
APINotes. The writer uses a private implementation pattern to reduce
the exposed surface to just the programmatic representation of the
APINotes and not expose the details of the bitcode encoding. The format
itself is not considered stable and should only be accessed through the
APINotes Reader and Writer types.
Differential Revision: https://reviews.llvm.org/D92797
Reviewed By: martong
