git: openjdk/jdk20: 8288204: GVN Crash: assert() failed: correct memory chain

[Tobias Hartmann]

Changeset: a6a903d4
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2023-01-03 08:21:22 +0000
URL:       https://git.openjdk.org/jdk20/commit/a6a903d4b627bde85a311336ce25a7f5e25cf664

8288204: GVN Crash: assert() failed: correct memory chain

Backport-of: 04591595374e84cfbfe38d92bff4409105b28009

! src/hotspot/share/opto/cfgnode.cpp
! src/hotspot/share/opto/memnode.cpp
+ test/hotspot/jtreg/compiler/c2/TestGVNCrash.java