Deactivation symbols are a mechanism for allowing object files to disable specific instructions in other object files at link time. The initial use case is for pointer field protection. For more information, see the RFC: https://discourse.llvm.org/t/rfc-deactivation-symbols/85556 Reviewers: ojhunt, nikic, fmayer, arsenm, ahmedbougacha Reviewed By: fmayer Pull Request: https://github.com/llvm/llvm-project/pull/133536