CompileTime performance measurement

[Martin Nowak via Digitalmars-d]

On Sunday, 4 September 2016 at 00:04:16 UTC, Stefan Koch wrote:
> I recently implemented __ctfeWriteln.

Nice, is it only for your interpreter or can we move 
https://trello.com/c/6nU0lbl2/24-ctfewrite to done? I think 
__ctfeWrite would be a better primitive. And we could actually 
consider to specialize std.stdio.write* for CTFE.