On Thursday, 6 June 2013 at 07:43:30 UTC, Paulo Pinto wrote:
As I mentioned before, given that I speak more than really
using D for anything, my opinion should not count.
In C#'s case, which is similar to D, you not only have a VM,
but also ahead of time compilation.
Virtual by default wins when you have a VM that can do
devirtualization.
devirtualization is a link time problem, not a runtime one. We
can do that in D (except when it come to shared objects) and I
even proposed solutions to do so.
revirtualization, however, can only be done with a JIT compiler.
And it is done in C# . They had this option, D won't have it.
When doing static compilation, even with LTO, you are limited
in what you can do, specially if generating dynamic libraries.
Exact, but this is nothing specific to virtual. shared library
come at a cost, as the call is opaque to the compiler. It has to
assume the worse and must disable most optimizations anyway. You
are trying to pose a bandage on a wooden leg.
