aheejin wrote: @rjmccall > I don't know why the GNUStep runtime needs different ObjC and ObjC++ > personality functions. The ObjC++ personality has to support the complete > superset of exception clauses (a single call site can have handlers for both > C++ and ObjC exception types). It should therefore still be usable in either > pure ObjC or pure C++. > > In theory, the ObjC++ personality needs to be able to distinguish ObjC and > C++ exceptions, so using it instead of a single-language personality could > require a less compact LSDA format. In practice, they use the exact same > format, and AFAIK the exception types are always distinguished in a more > subtle way. I don't know the exact details of what GNUStep does, but the > Apple ObjC runtime just provides a v-table for ObjC exception RTTI objects > that implements the private exception-matching virtual methods on type_info > differently. (I'm not even sure LLVM _supports_ emitting a different LSDA > format for different personalities.)
If ObjC can share libc++abi (with little `#ifdef`s here and there I suppose) it will be simpler and we don't need to change much (if at all) in WasmEHPrepare. https://github.com/llvm/llvm-project/pull/169043 _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
