git: openjdk/jdk: jdk23: 8335390: C2 MergeStores: wrong result with Unsafe

[Emanuel Peter]

Changeset: 272d11a3
Author:    Emanuel Peter <epeter at openjdk.org>
Date:      2024-07-02 14:27:45 +0000
URL:       https://git.openjdk.org/jdk/commit/272d11a389f9f123c33b2d38c3dd2f43bce0a25c

8335390: C2 MergeStores: wrong result with Unsafe

Reviewed-by: thartmann
Backport-of: 9046d7aee3082b6cbf79876efc1c508cb893caad

! src/hotspot/share/opto/memnode.cpp
! test/hotspot/jtreg/compiler/c2/TestMergeStores.java
+ test/hotspot/jtreg/compiler/c2/TestMergeStoresUnsafeArrayPointer.java