[Bench!][Mir] +54%..+185% performance boost for Mersenne Twister.

[Guillaume Piolat via Digitalmars-d]

On Sunday, 27 November 2016 at 13:35:48 UTC, Andrei Alexandrescu 
wrote:
>
>> A useful intermediate step is to have these "[shared] static 
>> this" ctor
>> call a function instead, so that programs without druntime can 
>> call them
>> too.
>
> That would be progress.
>
>
> Andrei

Same story for core.cpuid which is initialized by a shared static 
constructor.
https://github.com/dlang/druntime/blob/master/src/core/cpuid.d

It seems the "shared static this" is allowed to break immutable 
but a function wouldn't. So maybe the variables here should be 
private __gshared?.