[Bug 3478] [IcedTea8] Backport '8187822: C2 conditional move optimization might create broken graph'
bugzilla-daemon at icedtea.classpath.org
bugzilla-daemon at icedtea.classpath.org
Wed Sep 5 16:12:21 UTC 2018
https://icedtea.classpath.org/bugzilla/show_bug.cgi?id=3478
--- Comment #4 from hg commits <mercurial at icedtea.classpath.org> ---
details:
http://icedtea.classpath.org//hg/icedtea8?cmd=changeset;node=37a025f6ea9a
author: Andrew John Hughes <gnu_andrew at member.fsf.org>
date: Fri Aug 31 20:55:12 2018 +0100
Bump shenandoah to
aarch64-shenandoah-jdk8u172-b11--shenandoah-merge-2018-06-21.
Upstream changes:
- Allocation failure injection machinery
- [backport] AArch64 shenandoah_store_check should read
evacuation_in_progress as byte
- [backport] Account trashed regions from coalesced CM-with-UR
- [backport] Adaptive collection set selection in adaptive policy
- [backport] Adaptive heuristics accounts trashed cset twice
- [backport] Adapt upstream object pinning API
- [backport] Add comments in shenandoah_store_check on direct heap field
use
- [backport] Added diagnostic flag ShenandoahOOMDuringEvacALot
- [backport] Added missing header file for non-PCH build
- [backport] Add missing barrier in C1 NIOCheckIndex intrinsic
- [backport] Add new pinned/cset region state for evac-failure-path
- [backport] Add ShenandoahRootProcessor API to report threads while
scanning roots
- [backport] Add test to verify Shenandoah is not enabled by default, and
enabled with the flag
- [backport] Add -XX:+ShenandoahVerify to more interesting tests
- [backport] AESCrypt.implEncryptBlock/AESCrypt.implDecryptBlock
intrinsics assume non null inputs
- [backport] Allow use of fp spills around write barrier
- [backport] Arraycopy fixes (tests and infrastructure)
- [backport] Assert Shenandoah-specific safepoints instead of generic
ones
- [backport] Asynchronous region recycling
- [backport] Avoid notifying about zero waste
- [backport] barrier moved due to null checks needs to always fix memory
edges
- [backport] Basic support for x86_32: build and run in STW configuration
- [backport] Bitmap based ShHeapRegionSet
- [backport] Break heuristics out from ShCollectorPolicy into their own
source files
- [backport] C2 should use heapword-sized object math
- [backport] Check BS type in immByteMapBase predicate
- [backport] Cleanup allocation tracking in heuristics
- [backport] Cleanup and refactor Full GC code
- [backport] Cleanup and strengthen BrooksPointer verification
- [backport] Clean up dead code
- [backport] Cleanup: removed unused code
- [backport] Cleanup reset_{next|complete}_mark_bitmap
- [backport] Cleanup SHH::should_start_normal_gc
- [backport] "Compact" heuristics for dense footprint scenarios
- [backport] Compact heuristics should not shortcut on immediate garbage,
but aggressively compact
- [backport] Conditionalize PerfDataMemorySize on enabled heap sampling
- [backport] Consistent liveness for humongous regions
- [backport] Control loop should wait before starting another GC cycle
- [backport] Critical native tests should only be ran on x86_64 platforms
- [backport] Degenerated GC
- [backport] Degenerated GC: rename enum, report degen reasons in stats
- [backport] Demote ShenandoahAllocImplicitLive to diagnostic
- [backport] Demote warning message about OOM-during-evac to
informational
- [backport] Denser ShHeapRegion status line
- [backport] Disable verification from non-Shenandoah VMOps.
- [backport] Disallow pinned_cset region moves and allocations during
Full GC
- [backport] Disambiguate "upgrade to Full GC" GCause
- [backport] Do not add non-allocatable regions to the freeset
- [backport] Don't treat allocation regions implicitely live during some
GCs
- [backport] Double check for UseShenandoahGC in WB expand
- [backport] Drop distinction between immediate garbage and free in
heuristics
- [backport] Dynamic worker refactoring
- [backport] Eagerly drop CSet state from regions during Full GC
- [backport] Eliminate write-barrier assembly stub (part 1)
- [backport] Enable biased locking for Shenandoah by default
- [backport] Ensure tasks use correct number of workers
- [backport] Excessive assert in ShHeap::mark_next
- [backport] Excessive asserts in marked_object_iterate
- [backport] FinalEvac pause to turn off evacuation
- [backport] Fix || and && chaining warnings in memnode.cpp
- [backport] Fix broken asserts in ShenandoahSharedEnumFlag
- [backport] Fixed code roots scanning that might be bypassed during
degenerated cycle
- [backport] Fixed compilation error of libTestHeapDump.c on Windows with
VS2010
- [backport] Fixed missing ResourceMark in ShenandoahAsserts::print_obj
- [backport] Fixed pinned region handling in mark-compact
- [backport] Fix (external) heap iteration + TestHeapDump should unlock
aggressive heuristics
- [backport] fix for alias analysis with ShenandoahBarriersForConst
- [backport] Fix/improve CLD processing
- [backport] Fixing Windows and ARM32 build
- [backport] Fix Mac OS build warnings
- [backport] Fix Minimal VM build
- [backport] Fix ShFreeSet boundary case
- [backport] fix TCK crash with shenandoah
- [backport] Forcefully update counters when GC cycle is running
- [backport] FreeSet and HeapRegion should have the reference to
ShenandoahHeap
- [backport] FreeSet refactor: bitmaps, cursors, biasing
- [backport] FreeSet should accept responsibility over trashed regions
- [backport] FreeSet should report its internal state before/after GC
cycle
- [backport] Full GC should compact humongous regions
- [backport] Full GC should not trash empty regions
- [backport] GC state testers (infra)
- [backport] Generic verification is possible only at Shenandoah
safepoints
- [backport] Get easy on template instantiations in ShConcMark
- [backport] Heap region sampling should publish region states
- [backport] Humongous regions should support explicit pinning
- [backport] Immediate garbage ratio should not go over 100%
- [backport] Implement flag to generate write-barriers without membars
- [backport] Implement protocol for safe OOM during evacuation handling +
Use jint in oom-evac-handler to match older JDKs Atomic support better +
Missing OOMScope in ShenandoahFixRootsTask
- [backport] Improve assertion/verification messages a bit
- [backport] Improve/more detailed timing stats for root queue work
- [backport] Incorrect constant folding with final field and
-ShenandoahOptimizeFinals
- [backport] Increase test timeouts
- [backport] Introduce assert_in_correct_region to verify object is in
correct region
- [backport] Isolate shenandoahVerifier from stray headers
- [backport] keep read barriers for final instance/stable field accesses
- [backport] Keep track of per-cycle mutator/collector allocs. Fix
mutator/collector alloc region overlap in traversal.
- [backport] Little cleanup
- [backport] Log message on ref processing, class unload, update refs for
mark events
- [backport] LotsOfCycles test timeouts
- [backport] Make concurrent precleaning log message optional again
- [backport] Make control loop more responsive under allocation pressure
- [backport] Make degenerated update-refs use region-set cursor to hand
over work
- [backport] Make heap counters update completely asynchronous
- [backport] Make major GC phases exclusive from each other
- [backport] Make sure selective barriers enabling/disabling works
- [backport] Make sure -XX:+ShenandoahVerify comes first in the tests
- [backport] Mark bitmap slices commit/uncommit + Aggregated bitmap
slicing
- [backport] Match barrier fastpath checks better
- [backport] Minor cleanups
- [backport] Minor cleanup, uses latest Atomic API
- [backport] Move barriers into typeArrayOop.hpp direct memory accessors
- [backport] Move ShHeap::used increment out of locked allocation path
- [backport] No need for fence in control loop: flags are now
ShSharedVariables
- [backport] Only report GC pause time to GC MXBean + Re-fix memory
managers and memory pools usage and pause reporting
- [backport] Optimize fwdptr region handling in
ShenandoahVerifyOopClosure::verify_oop
- [backport] Optimize oop/fwdptr/hr_index verification a bit
- [backport] overflow integer during size calculation
- [backport] Pacer should account allocation waste and unsuccessful
pacing in the budget
- [backport] Pacer should poll FreeSet to figure out actually available
space
- [backport] Passive should opt-in the barriers, not opt-out
- [backport] Pauses that do not affect heap occupancy should not report
heap
- [backport] Print message when heuristics changes the setting
ergonomically
- [backport] Protect C2 matchers with UseShenandoahGC
- [backport] Provide non-taxable allocation slack at the beginning of the
cycle
- [backport] Record cycle start/end to avoid continuous periodic GC
- [backport] Record Shenandoah events in hs_err events section
- [backport] Refactor allocation failure and explicit GC handling
- [backport] Refactor allocation metadata handling
- [backport] Refactor FreeSet rebuilding into the single source
- [backport] Refactoring GC phase and heap allocation tracking out of
policy
- [backport] Refactor uncommit handling: react on explicit GCs, feature
kill flag, etc
- [backport] Refactor worker timings into ShenandoahPhaseTimings
- [backport] ReferenceProcessor is_alive setup is racy
- [backport] Region sampling should lock while gathering region data
- [backport] Rehash VMOperations and cycle driver mechanics for
consistency
- [backport] Relax assert in SBS::is_safe()
- [backport] Remove BS:is_safe in favor of logged BS::verify_safe_oop
- [backport] Remove CSetThreshold handling from heuristics
- [backport] Remove FreeSet::add_region, inline into FreeSet::rebuild
- [backport] Remove obsolete check in FreeSet::allocate
- [backport] Remove ShenandoahGCWorkerPerJavaThread flag
- [backport] Remove ShenandoahMarkCompactBarrierSet
- [backport] Rename and cleanup _regions and _free_set uses
- [backport] Rename dynamic heuristics to static
- [backport] Rename *_oop_static/oop_ref to *_forwarded
- [backport] Rename ShenandoahConcurrentThread to ShenandoahControlThread
- [backport] Report all GC status flags in hs_err
- [backport] Report fwdptr size in JNI GetObjectSize
- [backport] Report how much we have failed to allocate during Allocation
Failure
- [backport] Report illegal transitions verbosely, and remove some no-op
transitions
- [backport] Rewire control loop to avoid double cleanup work
- [backport] Rework shared bool/enum flags with proper types and
synchronization
- [backport] Rewrite and fix ShenandoahHeap::marked_object_iterate
- [backport] Rich assertion failure logging
- [backport] Roots verification should take the special roots first
- [backport] RP closures should accept NULL referents
- [backport] Set ShenandoahMinFreeThreshold default to 10%
- [backport] Setup process references and class unloading once before the
cycle
- [backport] ShConcurrentThread races with set_gc_state_bit
- [backport] Shenandoah critical native support
- [backport] Shenandoah region/set iterators should not allow copying
- [backport] Shenandoah SA implementation
- [backport] Shenandoah/SPARC barrier stubs
- [backport] ShenandoahVerifyOptoBarriers should not fail with disabled
barriers
- [backport] ShenandoahWriteBarrierNode::find_bottom_mem() fix
- [backport] ShenandoahWriteBarrierRB flag to conditionally disable RB on
WB fastpath
- [backport] Shenandoah/Zero barrier stubs
- [backport] SieveObjects test is too hostile to verification
- [backport] Single GCTimer shared by all operations
- [backport] Single thread-local GC state flag for all barriers
- [backport] Some smallish ShHeapRegionSet changes
- [backport] Speed up asserts and verification, improve fastdebug builds
performance
- [backport] Split live data management for allocations and GCs
- [backport] Static heuristics should be really static and report
decisions
- [backport] Static heuristics should use non-zero allocation threshold
- [backport] Store checks should run most of the time
- [backport] Tax-and-Spend allocation pacing
- [backport] Testbug: VerifyJCStressTest leaks memory
- [backport] TestSelectiveBarrierFlags should accept multi-element flag
selections
- [backport] TestSelectiveBarrierFlags times out due to too aggressive
compilation mode
- [backport] Trim/expand test heap sizes to fit small heaps
- [backport] Trim the TLAB sizes to avoid wasteful retirement under TLAB
races
- [backport] Use leftmost region in GC allocations
- [backport] Use os::naked_short_sleep instead of naked Thread events for
sleeping
- [backport] Use/sort (cached) RegionData not ShenandoahHeapRegionSet
(infrastructure)
- [backport] UX: Cleanup (adaptive) CSet selection message
- [backport] UX: Pacer reports incorrect free size
- [backport] UX: Shorter gc+ergo messages from CSet selection
- [backport] Verifier crashes when reporting multiple forwardings
- [backport] Verifier should check klass pointers before attempting to
reach for object size
- [backport] Verifier should print verification label at liveness
verification
- [backport] Verify fwdptr accesses during Full GC moves
- [backport] Verify regions status
- [backport] When Shenandoah WB is moved out of loop, connect it to
correct loop memory Phi (back out and revisit previous fix)
- [backport] Wipe out ShenandoahStoreCheck implementation
- [backport] Workaround C1 ConstantOopWriteValue bug
- Bitmap size might not be page aligned when large page is used
- Changed claim count to jint
- Cherry-pick JDK-8165489: Missing G1 barrier in Unsafe_GetObjectVolatile
- Cherry-pick JDK-8173013: JVMTI tagged object access needs G1
pre-barrier
- Cherry-pick JDK-8187577: JVM crash during gc doing concurrent marking
- Defer cleaning of system dictionary and friends to parallel cleaning
phase
- Do not put down update-refs-in-progress flag concurrently
- Fix AArch64 build failure: misplaced #endif
- Fixed Shenandoah 8u build
- Fixed Windows build
- Fix non-PCH build
- Fix non-PCH x86_32 build
- Fix up SPARC and Zero headers for proper locations
- missing barriers in String intrinsics with
-ShenandoahOptimizeInstanceFinals -ShenandoahOptimizeStableFinals
- Missing event log for canceled GC
- S8031304: Add dcmd to print all loaded dynamic libraries.
- S8035496: G1 ARM: missing remset entry noticed by VerifyAfterGC for
vm/gc/concurrent/lp50yp10rp70mr30st0
- S8044107: Add Diagnostic Command to list all ClassLoaders
- S8055755: Information about loaded dynamic libraries is wrong on MacOSX
- S8059036: Implement Diagnostic Commands for heap and finalizerinfo
- S8087291: InitialBootClassLoaderMetaspaceSize and
CompressedClassSpaceSize should be checked consistent from MaxMetaspaceSize
- S8139673: NMT stack traces in output should show mtcomponent
- S8170358: [REDO] 8k class metaspace chunks misallocated from 4k chunk
Freelist
- S8170395: Metaspace initialization queries the wrong chunk freelist
- S8184991: NMT detail diff should take memory type into account
- S8187331: VirtualSpaceList tracks free space on wrong node
- S8187629: NMT: Memory miscounting in compiler (C2)
- S8187685: NMT: Tracking compiler memory usage of thread's resource area
- S8187822: C2 conditonal move optimization might create broken graph
- S8189599: InitialBootClassLoaderMetaspaceSize and
CompressedClassSpaceSize should be checked consistent from MaxMetaspaceSize
- S8190442: Backout changes for JDK-8087291 from 8u-dev as it didn't use
main CR id
- StringInternCleanup times out
- UB in os_linux_aarch64.cpp SpinPause
- VerifyJCStressTest should test all heuristics
- Workaround VM crash with JNI Weak Refs handling
ChangeLog:
2018-08-29 Andrew John Hughes <gnu_andrew at member.fsf.org>
Bump shenandoah to
aarch64-shenandoah-jdk8u172-b11--shenandoah-merge-2018-06-21.
* patches/hotspot/shenandoah/8035496-pr3487.patch,
* patches/hotspot/shenandoah/8165489-pr3589.patch,
* patches/hotspot/shenandoah/8187577-pr3578.patch,
* patches/hotspot/shenandoah/8187822-pr3478-rh1494230.patch,
* patches/hotspot/shenandoah/pr3573.patch:
Removed as applied upstream.
* Makefile.am:
(ICEDTEA_PATCHES): Move upstreamed patches to
AArch32-only section or remove altogether where they
were Shenandoah-only to begin with.
* NEWS: Updated.
* hotspot.map.in: Bump shenandoah to
aarch64-shenandoah-jdk8u172-b11--shenandoah-merge-2018-06-21.
* patches/hotspot/aarch32/8035496-pr3487.patch,
* patches/hotspot/aarch32/8187577-pr3578.patch,
* patches/hotspot/aarch32/8187822-pr3478-rh1494230.patch:
Symlinks replaced by actual patches due to removal of
Shenandoah versions.
* patches/hotspot/shenandoah/pr3519-return_value-02.patch:
Remove one of the two hunks as applied upstream.
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