On Thursday, 1 April 2021 at 19:00:08 UTC, Berni44 wrote:
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.
Since this is a "Learn" part of the Foruam, be careful with
"-boundscheck=off".
I mean for this little snippet is OK, but for a other projects
this my be wrong, and as it says here:
https://dlang.org/dmd-windows.html#switch-boundscheck
"This option should be used with caution and as a last resort to
improve performance. Confirm turning off @safe bounds checks is
worthwhile by benchmarking."
Matheus.
