Need for speed

[Imperatorn]

On Thursday, 1 April 2021 at 19:00:08 UTC, Berni44 wrote:
> On Thursday, 1 April 2021 at 16:52:17 UTC, Nestor wrote:
>> I was hoping to beat my dear Python and get similar results to 
>> Go, but that is not the case neither using rdmd nor running 
>> the executable generated by dmd. I am getting values between 
>> 350-380 ms, and 81ms in Python.
>
> Try using ldc2 instead of dmd:
>
> ```
> ldc2 -O3 -release -boundscheck=off -flto=full 
> -defaultlib=phobos2-ldc-lto,druntime-ldc-lto speed.d
> ```
>
> should produce much better results.

It did! Tried those flags with dmd and ldc and got the following 
(ms) for the approaches I had earlier (made two runs for each)

DMD
11
7
6
4

DMD
15
7
10
6

LDC
6
7
9
6

LDC
12
6
8
5