RFR(XS): 8184669: [MVT] Crash in ConnectionGraph::split_unique_types()

[Tobias Hartmann]

Hi,

please review the following patch:
https://bugs.openjdk.java.net/browse/JDK-8184669
http://cr.openjdk.java.net/~thartmann/valhalla/vt_prototype/webrev.31/

Escape analysis gets confused because the Klass input of a ReturnNode is tagged (since JDK-8183546 [1]) and therefore a ConLNode instead of a KlassNode is found.

Thanks,
Tobias

[1] http://hg.openjdk.java.net/valhalla/valhalla/hotspot/rev/eb2fdbd0695d#l7.4