How do I check if a function got CTFE?

[anonymous via Digitalmars-d-learn]

On Thursday, 2 October 2014 at 18:42:56 UTC, AsmMan wrote:
> I was thiking the dmd compiler did CTFE without someone ask for 
> this, in the way as I've mentioned, checking for constant 
> arguments + function's purity and if all this is true, it did 
> the CTFE rather than generate code to compute it at run-time. 
> In the case of it did happen, I just wanted to know. It was my 
> misunderstsooding how it does works in dmd.

Yeah, that would be constant folding. The compiler is free to do
that. It's just not called "CTFE" then.