git: openjdk/jdk19u: master: 4 new changesets

[Tobias Hartmann]

Changeset: 62db7bb5
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2022-11-23 14:05:56 +0000
URL:       https://git.openjdk.org/jdk19u/commit/62db7bb5b7bb454da5c700493463d123c8ae06d8

8293996: C2: fix and simplify IdealLoopTree::do_remove_empty_loop

Backport-of: dd51f7e0b75d3a16403608d89cd206ac0bedf882

! src/hotspot/share/opto/loopTransform.cpp
! test/hotspot/jtreg/compiler/loopopts/TestRemoveEmptyLoop.java

Changeset: 71b38e22
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2022-11-23 14:08:13 +0000
URL:       https://git.openjdk.org/jdk19u/commit/71b38e2247592e48c48d7c0813b86d9a5f27ec53

8292780: misc tests failed "assert(false) failed: graph should be schedulable"

Backport-of: 16047e8308a845436f7003e09e604a88bb370632

! src/hotspot/share/opto/memnode.cpp
+ test/hotspot/jtreg/compiler/arraycopy/TestArrayCopyPartialInliningLoadSplit.java

Changeset: 4708c7b0
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2022-11-23 14:10:04 +0000
URL:       https://git.openjdk.org/jdk19u/commit/4708c7b0e43ba24882fc82534e9ad2ada288ce5e

8287217: C2: PhaseCCP: remove not visited nodes, prevent type inconsistency

Reviewed-by: kvn
Backport-of: 379f3094db0b8afe90ed6b7a341164222744085f

! src/hotspot/share/opto/compile.cpp
! src/hotspot/share/opto/compile.hpp
! src/hotspot/share/opto/phaseX.cpp
! src/hotspot/share/opto/phaseX.hpp
+ test/hotspot/jtreg/compiler/ccp/TestRemoveUnreachableCCP.java

Changeset: 3f3bbdfa
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2022-11-23 14:11:12 +0000
URL:       https://git.openjdk.org/jdk19u/commit/3f3bbdfa2661931a5d1a99c00d0f95720309ee8f

8285835: SIGSEGV in PhaseIdealLoop::build_loop_late_post_work

Backport-of: 8aa1526b443025b8606a3668262f46a9cb6ea6f6

! src/hotspot/share/opto/escape.cpp
! src/hotspot/share/opto/escape.hpp
+ test/hotspot/jtreg/compiler/escapeAnalysis/TestBrokenEA.java