[clang] Clang tooling generated visibility macros for Clang (PR #109702)

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mydeveloperday wrote:

Looking at Format.h (the only file I'm interested in), there feels to me to be things in the ABI that I wouldn't expect to be called externally,  I don't know enough about what's involved in creating a DLL ABI but I wouldn't want some of the clang-format functions to be in a situation where we could change their parameters because it would be ABI breaking. @owenca thoughts?

https://github.com/llvm/llvm-project/pull/109702