[aarch64-port-dev ] git: openjdk/aarch64-port: master: 8 new changesets

[Jesper Wilhelmsson]

Changeset: 2525f39d
Author:    Roman Kennke <rkennke at openjdk.org>
Date:      2020-12-21 12:42:34 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/2525f39d

8258714: Shenandoah: Process references before evacuation during degen

Reviewed-by: shade

! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
! src/hotspot/share/gc/shenandoah/shenandoahMarkCompact.cpp
! src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.cpp
! src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.hpp

Changeset: 4e8338eb
Author:    Roberto Castañeda Lozano <rcastanedalo at openjdk.org>
Committer: Christian Hagedorn <chagedorn at openjdk.org>
Date:      2020-12-21 13:04:24 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/4e8338eb

8255763: C2: OSR miscompilation caused by invalid memory instruction placement

Disable GCM hoisting of memory-writing nodes for irreducible CFGs. This prevents
GCM from wrongly "hoisting" stores into descendants of their original loop. Such
an "inverted hoisting" can happen due to CFGLoop::compute_freq()'s inaccurate
estimation of frequencies for irreducible CFGs.

Extend CFG verification code by checking that memory-writing nodes are placed in
either their original loop or an ancestor.

Add tests for the reducible and irreducible cases. The former was already
handled correctly before the change (the frequency estimation model prevents
"inverted hoisting" for reducible CFGs), and is just added for coverage.

This change addresses the specific miscompilation issue in a conservative way,
for simplicity and safety. Future work includes investigating if only the
illegal blocks can be discarded as candidates for GCM hoisting, and refining
frequency estimation for irreducible CFGs.

Reviewed-by: kvn, chagedorn

! src/hotspot/share/opto/block.cpp
! src/hotspot/share/opto/block.hpp
! src/hotspot/share/opto/gcm.cpp
+ test/hotspot/jtreg/compiler/codegen/TestGCMStorePlacement.java

Changeset: 8da7c580
Author:    Jonathan Gibbons <jjg at openjdk.org>
Date:      2020-12-21 17:04:37 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/8da7c580

8258443: doclint should be service-loaded with system class loader

Reviewed-by: alanb

! src/jdk.compiler/share/classes/com/sun/tools/doclint/DocLint.java

Changeset: 772addfd
Author:    Vladimir Ivanov <vlivanov at openjdk.org>
Date:      2020-12-22 12:12:21 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/772addfd

8258790: C2: Crash on empty macro node list

Reviewed-by: kvn, chagedorn

! src/hotspot/share/opto/macro.cpp

Changeset: 88dd6a94
Author:    Daniel D. Daugherty <dcubed at openjdk.org>
Date:      2020-12-22 13:43:17 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/88dd6a94

8258802: ProblemList TestJstatdDefaults.java, TestJstatdRmiPort.java, and TestJstatdServer.java

Reviewed-by: amenkov, cjplummer

! test/jdk/ProblemList.txt

Changeset: eabc9030
Author:    Daniel D. Daugherty <dcubed at openjdk.org>
Date:      2020-12-22 17:15:34 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/eabc9030

8258827: ProblemList Naming/DefaultRegistryPort.java and Naming/legalRegistryNames/LegalRegistryNames.java on Windows

Reviewed-by: rriggs, msheppar, prr

! test/jdk/ProblemList.txt

Changeset: 61e5e393
Author:    Daniel D. Daugherty <dcubed at openjdk.org>
Date:      2020-12-22 18:59:36 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/61e5e393

8258832: ProblemList com/sun/jdi/AfterThreadDeathTest.java on Linux-X64

Reviewed-by: ccheung, amenkov

! test/jdk/ProblemList.txt

Changeset: f2bad3a0
Author:    Jesper Wilhelmsson <jwilhelm at openjdk.org>
Date:      2020-12-22 21:16:59 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/f2bad3a0

Merge

! src/hotspot/share/opto/macro.cpp
! test/jdk/ProblemList.txt
! src/hotspot/share/opto/macro.cpp
! test/jdk/ProblemList.txt