[8u] RFR(XS): 8071302: assert(!_reg_node[reg_lo] || edge_from_to(_reg_node[reg_lo], def)) failed: after block local

[Igor Veresov]

JDK9 webrev:  http://cr.openjdk.java.net/~iveresov/8071302/webrev.00
JDK9 changeset: http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/b9b4b9394887
JBS: https://bugs.openjdk.java.net/browse/JDK-8071302

Thanks!
igor