Loop compilation weirdness

[Scott Oaks]

Thanks; that makes sense. A little counter-intuitive to me that the
far-simpler-to-write code isn't the simpler code to execute, but now I
see the point about branching out of the loop vs. merging back in.

> P.S.  The System.arraycopy intrinsic is heavily optimized, and in some
> cases is faster than a hand-written loop.

Always faster (or at least as fast), I would expect (and I've filed bugs
on that in the past...). But this isn't a simple array copy; it's type
converting as it goes.

-Scott