hg: valhalla/valhalla: 8206245: [lworld] C2 crashes when merging values with different types

[tobias.hartmann at oracle.com]

Changeset: 1b791424da6b
Author:    thartmann
Date:      2018-07-04 14:43 +0200
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/1b791424da6b

8206245: [lworld] C2 crashes when merging values with different types
Reviewed-by: roland

! src/hotspot/share/opto/cfgnode.cpp
! src/hotspot/share/opto/parse1.cpp
! test/hotspot/jtreg/compiler/valhalla/valuetypes/TestLWorld.java