On 04.12.2015 15:06, Alex wrote:
3. The compilation was done by:
dmd -O -release -boundscheck=off [filename.d]
Is there anything else to improve performance significantly?

You forgot -inline.

By the way, I'm not a fan of using -boundscheck=off like a general optimization flag. It undermines @safe, and as the documentation says, it should be used with caution.

http://dlang.org/dmd-windows.html#switch-boundscheck

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