RE: Improve CRC32C performance on SSE4.2

> Now, there is no equivalent on MSVC and workarounds are fragile [1].
> Maybe we could only assert initialization happened for the backend and for
> frontend either
> - add a couple manual initializations to to the frontend programs where we don't
> want to lose performance for non-gcc/clang.
> - require CRC on x86-64 MSVC since Windows 10 is EOL soon, going by Thomas
> M.'s earlier findings on popcount (also SSE4.2) [2]
> 
> The first is less risky but less tidy.

Agree, let me think about this but not sure if I have any useful suggestions here. MSVC is unfortunately not my strong
suit:/ 
 

Raghuveer