oopack performance

[Bonzini]

> > Complex (const Complex &F) : re(F.re), im(F.im) {}
>
> This is very odd, because that's pretty much the same as the
> default compiler-generated constructor.  Anyone have any idea
> why there's so much difference?

I am completely illiterate on how the C++ front-end synthesizes copy constructors, but
I wonder, are they marked as inlinable?  If not, Dan, try -finline-functions or -O3 and
you should see a good increase in performance.

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