Need reviewer: JDK 8 CR for Support Integer overflow

[Florian Weimer]

* Roger Riggs:

> The boolean expression can be refactored. (Only bit-31 is significant).
> But it becomes pretty inscrutable.
>
> (x ^ r)<  0&&  (x ^ y)>= 0  becomes
>
> (x ^ r)<  0&&  (~(x ^ y))<  0  becomes
>
> ((x ^ r)&  ~(x ^ y))<  0

That's what I got in my second attempt, too. It doesn't result in a
longer dependency chain because the left side of the & is two operations
deep, too.  Therefore, this version should be faster (at least after
compilation), independent of the input arguments.

-- 
Florian Weimer                <fweimer at bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstraße 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99