[PATCH v2] msvcrt: Add an ermsb-based memset for x86/64.

[Piotr Caban]

On 8/31/21 12:52 PM, Rémi Bernon wrote:
> For a start we could add -ffreestanding / -fno-builtin compilation flags 
>   to msvcrt instead, although it won't be much faster, it will at least 
> fix the issue with the builtin replacement.
As far as I understand -fno-builtin does not guarantee that there will 
be no call to memset introduced by compiler. Isn't it similar to the 
memcpy problem we have while using clang?