git: openjdk/jdk17u: master: 2 new changesets

[Tobias Hartmann]

Changeset: 90341dbc
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2021-08-18 13:21:45 +0000
URL:       https://git.openjdk.java.net/jdk17u/commit/90341dbccdc02f686b0d672a4b4ec109e30f9d17

8268019: C2: assert(no_dead_loop) failed: dead loop detected

Backport-of: 489e5fd12a37a45f4f5ea64b05f85c6f99f70811

! src/hotspot/share/opto/ifnode.cpp
+ test/hotspot/jtreg/compiler/c2/TestDeadLoopSplitIfLoop.java

Changeset: 9489ab7b
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2021-08-18 13:22:25 +0000
URL:       https://git.openjdk.java.net/jdk17u/commit/9489ab7b8b882fe15730fb6723b5c26ce27ed7f9

8271925: ZGC: Arraycopy stub passes invalid oop to load barrier

Backport-of: d53d94b14d09bbcbfd9bbc0d214ead9bd52e7f58

! src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp