hg: jdk9/sandbox/hotspot: 8179070: nashorn+octane's box2d causes c2 to crash with "Bad graph detected in compute_lca_of_uses"

[chris.hegarty at oracle.com]

Changeset: d7da8c2b8b6c
Author:    roland
Date:      2017-04-25 09:37 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/hotspot/rev/d7da8c2b8b6c

8179070: nashorn+octane's box2d causes c2 to crash with "Bad graph detected in compute_lca_of_uses"
Summary: ciTypeFlow speculates field is null but parsing uses non null constant because of concurrent class initialization
Reviewed-by: thartmann

! src/share/vm/opto/parse3.cpp