RFC: std.uuid

[Vladimir Panteleev]

On Monday, 26 December 2011 at 17:37:17 UTC, Piotr Szturmaj wrote:
> Yes. Here are the results: http://pastebin.com/rD8kiaQy. This 
> is observed only with Windows DMD.

I'd be more interested in seeing the code.

I've done some more research on this. In release builds, DMD on 
Windows emits a memcpy call for a slice copy. However, the 
auto-generated memcpy call has slightly less overhead 
(register/stack shuffling) than a manual memcpy call, which 
explains the performance difference I was seeing.