Passing array as const slows down code?

[bearophile]

Joseph Rushton Wakeling:

> Removing the ref ups the time as described before, but only 
> with GDC (DMD the runtime is the same).  It's a real effect.
>
>> There is no implicit local copy for const. I have a suspicion 
>> that you changed
>> two things and forgot about one of them when running your 
>> tests.
>
> Really don't think so.  You can even check the version history 
> of changes if you like!

Then it's seems a compiler bug. Please, minimize it as much as
possible, and put it in Bugzilla.

Bye,
bearophile