rjmccall added a comment. I don't think it's an intended guarantee of the Itanium ABI that the v-table will be unique, and v-tables are frequently not unique in the presence of shared libraries. They should be unique for classes with internal linkage, but of course that's a vastly reduced domain for the optimization. We could do an RTTI comparison in the general case, either inline or by synthesizing a helper function to compare two `std::type_info`s. Or you could have a flag to tell you to make stronger uniqueness assumptions.
If there are multiple subobjects of the source type in the destination type, consider just casting to `void*` first instead of doing multiple comparisons. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D154658/new/ https://reviews.llvm.org/D154658 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
