mingmingl-llvm wrote: > > Taking a further look shows these preserved RTTIs come from vtables whose > > superclass has its type-id accessed. > > Thank you for helping evaluate this patch. I am curious about what these type > IDs is used for—is it for dynamic_cast, exception handling, or the typeid > operator?
I have two findings after some investigation 1. There is one use of `std::typeid` in a core templated library. The capture class type has a large subtree (protobuf message), which preserves nodes in its subtree. Luckily a source code change is feasible to remove the dependency on RTTI in the surrounding code. 2. The other finding is more open-ended and it is described in details in https://github.com/llvm/llvm-project/pull/126336#discussion_r1962473148 with some follow-up questions. We can discuss there. https://github.com/llvm/llvm-project/pull/126336 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
