[14] RFR(S): 8233164: C2 fails with assert(phase->C->get_alias_index(t) == phase->C->get_alias_index(t_adr)) failed: correct memory chain

[Roland Westrelin]

> http://cr.openjdk.java.net/~thartmann/8233164/webrev.00/

I'm wondering whether this problem could show up elsewhere and if a more
generic fix would be needed (maybe EA should set the type of the CastPP
so there's no inconsistency when IGVN runs). The fix looks good to
address this particular problem but I think this deserves a follow up
bug to investigate this further.

Roland.