[Bug c++/63164] unnecessary calls to __dynamic_cast

[jason at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63164

--- Comment #17 from Jason Merrill <jason at gcc dot gnu.org> ---
As I commented at

https://inbox.sourceware.org/gcc-patches/75ff8af8-af03-42fa-b68b-e6c16a34c...@redhat.com/

we could optimize the dynamic_cast to type_info::operator== instead of vtable
comparison.