Improve the OOP ABI

[Guillaume Piolat]

On Thursday, 28 September 2023 at 15:39:22 UTC, deadalnix wrote:
>> I think it's the same in C++, and sometimes dynamic_cast ends 
>> up making string comparisons.
>
> What's the reason for this madness?

For example for GCC => 
https://github.com/gcc-mirror/gcc/blob/41d6b10e96a1de98e90a7c0378437c3255814b16/libstdc%2B%2B-v3/libsupc%2B%2B/typeinfo#L48

MSVCR => 
https://github.com/ojdkbuild/tools_toolchain_vs2017bt_1416/blob/master/VC/Tools/MSVC/14.16.27023/crt/src/vcruntime/rtti.cpp#L27

I don't understand any of it, just read "strcmp" in a profiler 
once in a big C++ app. It turns out it was RTTI which was taking 
a small percentage of time.