git: openjdk/jdk21u-dev: master: 8180450: secondary_super_cache does not scale well

[Andrew Haley]

Changeset: ef282b75
Branch: master
Author:    Andrew Haley <aph at openjdk.org>
Date:      2025-03-06 09:46:25 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/ef282b75bbc233704d9b76d741973ee3d03d30c6

8180450: secondary_super_cache does not scale well
8337958: Out-of-bounds array access in secondary_super_cache

Reviewed-by: adinn
Backport-of: f11a496de61d800a680517457eb43b078a633953

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/assembler_aarch64.hpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
! src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp
! src/hotspot/cpu/aarch64/vm_version_aarch64.hpp
! src/hotspot/cpu/x86/assembler_x86.cpp
! src/hotspot/cpu/x86/assembler_x86.hpp
! src/hotspot/cpu/x86/macroAssembler_x86.cpp
! src/hotspot/cpu/x86/macroAssembler_x86.hpp
! src/hotspot/cpu/x86/stubGenerator_x86_64.cpp
! src/hotspot/cpu/x86/stubGenerator_x86_64.hpp
! src/hotspot/cpu/x86/vm_version_x86.hpp
! src/hotspot/cpu/x86/x86_64.ad
! src/hotspot/share/cds/filemap.cpp
! src/hotspot/share/cds/filemap.hpp
! src/hotspot/share/classfile/classLoader.cpp
! src/hotspot/share/classfile/classLoader.hpp
! src/hotspot/share/memory/universe.cpp
! src/hotspot/share/memory/universe.hpp
! src/hotspot/share/oops/arrayKlass.cpp
! src/hotspot/share/oops/instanceKlass.cpp
! src/hotspot/share/oops/klass.cpp
! src/hotspot/share/oops/klass.hpp
! src/hotspot/share/oops/objArrayKlass.cpp
! src/hotspot/share/opto/c2_globals.hpp
! src/hotspot/share/opto/matcher.cpp
! src/hotspot/share/opto/memnode.cpp
! src/hotspot/share/runtime/abstract_vm_version.hpp
! src/hotspot/share/runtime/arguments.cpp
! src/hotspot/share/runtime/globals.hpp
! src/hotspot/share/runtime/stubRoutines.cpp
! src/hotspot/share/runtime/stubRoutines.hpp
! src/hotspot/share/utilities/globalDefinitions.hpp
+ src/hotspot/share/utilities/rotate_bits.hpp
+ test/micro/org/openjdk/bench/vm/lang/SecondarySupersLookup.java