This talk covers the design and implementation of MSVC-compatible exception handling in Clang and LLVM. Unlike the Itanium C++ exception handling model, the Windows exception handling model is not designed around successive unwinding. As a result, the existing LLVM landingpad instruction is insufficient for expressing how Windows exceptions should be handled. To support Windows exceptions, we added the new token type and a family of new EH pad instructions to LLVM. This talk describes the final design of the new representation and the tradeoffs we made along the way.