hg: valhalla/valhalla: 8223949: [lworld] Casting null to an unloaded value type should throw NPE

[tobias.hartmann at oracle.com]

Changeset: 784781105f6b
Author:    thartmann
Date:      2019-05-15 14:23 +0200
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/784781105f6b

8223949: [lworld] Casting null to an unloaded value type should throw NPE

! src/hotspot/share/ci/ciTypeFlow.cpp
! src/hotspot/share/opto/parseHelper.cpp
! test/hotspot/jtreg/compiler/valhalla/valuetypes/TestNullableValueTypes.java