[9 or 10] RFR(S): 8179070: nashorn+octane's box2d causes c2 to crash with "Bad graph detected in compute_lca_of_uses"

[Roland Westrelin]

>> http://cr.openjdk.java.net/~roland/8179070/webrev.00/
>
> The fix looks good to me, thanks for the detailed explanation!

Thanks for the review, Tobias!

>> The fix seems safe enough that I would say this would better be fixed in 9.
>
> Yes, I agree. I targeted this for JDK 9, please request approval according to
> http://openjdk.java.net/projects/jdk9/fix-request-process

Will do.

Roland.