git: openjdk/jdk21u: master: 3 new changesets

[Aleksey Shipilev]

Changeset: 2bef0bbb
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2023-10-24 15:36:25 +0000
URL:       https://git.openjdk.org/jdk21u/commit/2bef0bbb2002e5ba0e5fc502e8b9fb05d39e9a38

8315869: UseHeavyMonitors not used

Reviewed-by: phh
Backport-of: 3301fb1e8ad11d7de01a052e0a2d6178a7579ba6

! src/hotspot/share/runtime/arguments.cpp
! src/hotspot/share/runtime/globals.hpp
! test/jdk/java/lang/Thread/virtual/CarrierThreadWaits.java
! test/jdk/java/util/concurrent/ConcurrentHashMap/MapLoops.java

Changeset: 294c19d9
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2023-10-24 15:36:55 +0000
URL:       https://git.openjdk.org/jdk21u/commit/294c19d95485939ec76802d5fc56647122306021

8315088: C2: assert(wq.size() - before == EMPTY_LOOP_SIZE) failed: expect the EMPTY_LOOP_SIZE nodes of this body if empty

Backport-of: fe4f90021ffd44cb0af34f39d4ca0a7e44605c92

! src/hotspot/share/opto/loopTransform.cpp
+ test/hotspot/jtreg/compiler/loopstripmining/TestBrokenEmptyLoopLogic.java

Changeset: 9f0d9ca6
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2023-10-24 15:37:26 +0000
URL:       https://git.openjdk.org/jdk21u/commit/9f0d9ca663b05d2c6003505ab2c5a31d9ad580b6

8316778: test hprof lib: invalid array element type from JavaValueArray.elementSize

Backport-of: f7deaf4bef21cb86fcc8a6c10454fbd6bbbba2d9

+ test/lib-test/jdk/test/lib/hprof/HprofTest.java
! test/lib/jdk/test/lib/hprof/model/JavaObject.java
! test/lib/jdk/test/lib/hprof/model/JavaValueArray.java