git: openjdk/jdk: 8324969: C2: prevent elimination of unbalanced coarsened locking regions

[Vladimir Kozlov]

Changeset: b938a5c9
Author:    Vladimir Kozlov <kvn at openjdk.org>
Date:      2024-02-28 16:04:47 +0000
URL:       https://git.openjdk.org/jdk/commit/b938a5c9edd53821a52b43a8e342b76adb341a3f

8324969: C2: prevent elimination of unbalanced coarsened locking regions

Reviewed-by: epeter, vlivanov, dlong

! src/hotspot/share/opto/callnode.cpp
! src/hotspot/share/opto/compile.cpp
! src/hotspot/share/opto/compile.hpp
! src/hotspot/share/opto/escape.cpp
! src/hotspot/share/opto/escape.hpp
! src/hotspot/share/opto/locknode.cpp
! src/hotspot/share/opto/locknode.hpp
! src/hotspot/share/opto/macro.cpp
+ test/hotspot/jtreg/compiler/locks/TestCoarsenedAndNestedLocksElimination.java