Slow UDF call?

[Giovanni Di Maria]

On Saturday, 17 August 2019 at 20:57:44 UTC, Giovanni Di Maria 
wrote:
> On Saturday, 17 August 2019 at 20:15:02 UTC, Stefan Koch wrote:
>> On Saturday, 17 August 2019 at 19:43:22 UTC, Giovanni Di Maria 
>> wrote:
>>> [...]
>>
>> Yes they do
>>
>> A function call has a cost.
>> In case of a function which performes a 1 cycle  (nominally 
>> without ILP) operation, the overhead of the function call 
>> dominates.
>> try compiling with -inline and compare again.
>
>
>
>
> Hi Stefan Koch
> Thank you very much.
> With the option -inline, now the execution is very fast,
> only 4 seconds....
> Thnak you thank you very much.
> Giovanni


I have also compiled with:
dmd program.d -O -release -inline -boundscheck=off

and the execution speed is very very fast.
Giovanni