Merge

8161651: Logic in ConnectionGraph::split_unique_types() wrongly assumes node always have memory input
Reviewed-by: thartmann, kvn

8162540: Crash in C2 escape analysis with assert: "node should be registered"
Summary: GetAndSet, CompareAndExchange and CompareAndSwap intrinsics emit unsafe accesses to oop fields.
Reviewed-by: kvn

8153792: EA: assert(ptn->as_LocalVar()->edge_count() > 0) failed: sanity when compiling compareAndExchange
Reviewed-by: kvn, psandoz

8132524: Missing includes to resourceArea.hpp
Summary: Files that use ResourceMark are missing the include of resourceArea.hpp
Reviewed-by: tschatzl, jwilhelm

8148146: Integrate new internal Unsafe entry points, and basic intrinsic support for VarHandles
Reviewed-by: psandoz, kvn, jrose, adinn, simonis, coleenp

8140001: _allocateInstance intrinsic does not throw InstantiationException for abstract classes and interfaces
Reviewed-by: kvn, shade

8143925: Enhancing CounterMode.crypt() for AES
Summary: Add intrinsic for CounterMode.crypt() to leverage the parallel nature of AES in Counter(CTR) Mode.
Reviewed-by: kvn, ascarpino
Contributed-by: kishor.kharbas@intel.com

8143355: Update for addition of vectorizedMismatch intrinsic for x86
Reviewed-by: kvn
Contributed-by: vivek.r.deshpande@intel.com, liqi.yi@intel.com

8143014: Access PtrQueue member offsets through derived classes
Summary: Moved accessors to derived classes and updated callers.
Reviewed-by: tschatzl, jmasa, twisti

8141132: JEP 254: Compact Strings
Summary: Adopt a more space-efficient internal representation for strings.
Reviewed-by: alanb, bdelsart, coleenp, iklam, jiangli, jrose, kevinw, naoto, pliden, roland, smarks, twisti
Contributed-by: Brent Christian <brent.christian@oracle.com>, Vivek Deshpande <vivek.r.deshpande@intel.com>, Tobias Hartmann <tobias.hartmann@oracle.com>, Charlie Hunt <charlie.hunt@oracle.com>, Vladimir Kozlov <vladimir.kozlov@oracle.com>, Roger Riggs <roger.riggs@oracle.com>, Xueming Shen <xueming.shen@oracle.com>, Aleksey Shipilev <aleksey.shipilev@oracle.com>, Sandhya Viswanathan <sandhya.viswanathan@intel.com>

8080775: Better argument formatting for assert() and friends
Reviewed-by: kbarrett, pliden

8132081: C2 support for Adler32 on SPARC
Summary: Add C2 instrinsic support for Adler32 checksum on SPARC.
Reviewed-by: kvn
Contributed-by: ahmed.khawaja@oracle.com

8134031: Incorrect JIT compilation of complex code with inlining and escape analysis
Summary: Bad rewiring of memory edges when we split unique types during EA
Reviewed-by: kvn

8131675: EA fails with assert(false) failed: not unsafe or G1 barrier raw StoreP
Reviewed-by: roland

Merge

8130150: Implement BigInteger.montgomeryMultiply intrinsic
Summary: Add montgomeryMultiply intrinsics
Reviewed-by: kvn

8073583: C2 support for CRC32C on SPARC
Reviewed-by: jrose, kvn
Contributed-by: james.cheng@oracle.com

8073108: Use x86 and SPARC CPU instructions for GHASH acceleration
Reviewed-by: kvn, jrose

8081778: Use Intel x64 CPU instructions for RSA acceleration
Summary: Add intrinsics for BigInteger squareToLen and mulAdd methods.
Reviewed-by: kvn, jrose

8076188: Optimize arraycopy out for non escaping destination
Summary: if the destination of an arraycopy is non escaping, the arraycopy may be optimized out
Reviewed-by: kvn, vlivanov

8069412: Locks need better debug-printing support
Summary: Added better debug-printing support and enhanced LogCompilation tool
Reviewed-by: kvn, roland, dholmes

8071534: assert(!failing()) failed: Must not have pending failure. Reason is: out of memory
Summary: Add missing C->failing() check after Connection graph construction.
Reviewed-by: iveresov

8066312: Add new Node* Node::find_out(int opc) method.
Summary: Added methods find_user_with() and has_user_with() for searching for a particular out type.
Reviewed-by: kvn, jrose

8066199: C2 escape analysis prevents VM from exiting quickly
Summary: Check for safepoint and block during EA Connection graph construction.
Reviewed-by: roland, vlivanov, shade

8058148: MaxNodeLimit and LiveNodeCountInliningCutoff
Reviewed-by: kvn, roland

8041984: CompilerThread seems to occupy all CPU in a very rare situation
Summary: Add new timeout checks to EA.
Reviewed-by: iveresov, drchase

8058746: escape analysis special case code for array copy broken by 7173584
Summary: escape analysis doesn't handler arraycopy nodes properly
Reviewed-by: kvn, iveresov, vlivanov

8058825: EA: ConnectionGraph::split_unique_types does incorrect scalar replacement
Reviewed-by: kvn

8058968: Compiler time traces should be improved
Summary: Use CITime consistently, make C2 to report to CompilerBroker, more probes.
Reviewed-by: vlivanov, jrose

8055494: Add C2 x86 intrinsic for BigInteger::multiplyToLen() method
Summary: Add new C2 intrinsic for BigInteger::multiplyToLen() on x86 in 64-bit VM.
Reviewed-by: roland

8054033: Remove unused references to Compile*
Summary: Removed unused references to Compile* missed by JDK-8034812.
Reviewed-by: kvn, roland

8035968: Leverage CPU Instructions to Improve SHA Performance on SPARC
Summary: Add C2 SHA intrinsics on SPARC
Reviewed-by: kvn, roland
Contributed-by: james.cheng@oracle.com

8038048: assert(null_obj->escape_state() == PointsToNode::NoEscape,etc) runThese -full
Summary: use correct set_escape_state() method.
Reviewed-by: kvn, iignatyev
Contributed-by: Richard Reingruber <richard.reingruber@sap.com>

8001532: C2 node files refactoring
Summary: Split C2 node files into cast, convert, countbits, intrinsic, move, narrowptr and opaquenode classes
Reviewed-by: kvn, morris

8027388: JVM crashes with SIGSEGV (0xb) at pc=0x00000001077cbbf6
Summary: Make object non-scalarizable if it has field with multiple bases one of which is null
Reviewed-by: kvn, twisti

8007923: Tests on references fails
Reviewed-by: kvn, iveresov

7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
Summary: add intrinsics using new instruction to interpreter, C1, C2, for suitable x86; add test
Reviewed-by: kvn, twisti

8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>

8015441: runThese crashed with assert(opcode == Op_ConP || opcode == Op_ThreadLocal || opcode == Op_CastX2P ..) failed: sanity
Summary: Relax the assert to accept any raw ptr types.
Reviewed-by: roland

8014286: failed java/lang/Math/DivModTests.java after 6934604 changes
Summary: Corrected escape state for the result of boxing method. Added force inlining executed boxing methods.
Reviewed-by: twisti

8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
Summary: Add NULL checks and asserts for Type::make_ptr() returned value.
Reviewed-by: twisti

6934604: enable parts of EliminateAutoBox by default
Summary: Resurrected autobox elimination code and enabled part of it by default.
Reviewed-by: roland, twisti

6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
Summary: Use SSE4.2 and AVX2 instructions for encodeArray intrinsic.
Reviewed-by: roland

7092905: C2: Keep track of the number of dead nodes
Summary: keep an (almost) accurate running count of the reachable (live) flow graph nodes.
Reviewed-by: kvn, twisti, jrose, vlivanov

8002069: Assert failed in C2: assert(field->edge_count() > 0) failed: sanity
Summary: Added missed type check of initializing store in ConnectionGraph::find_init_values().
Reviewed-by: roland, twisti, vlivanov

7163534: VM could crashes assert(false) failed: infinite EA connection graph build
Summary: In case of time or iterations limit reached C2 stops EA and continue compilation without EA as it does in product VM already.
Reviewed-by: twisti

7184394: add intrinsics to use AES instructions
Summary: Use new x86 AES instructions for AESCrypt.
Reviewed-by: twisti, kvn, roland
Contributed-by: tom.deneau@amd.com

7054512: Compress class pointers after perm gen removal
Summary: support of compress class pointers in the compilers.
Reviewed-by: kvn, twisti

7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
Summary: use shorter instruction sequences for atomic add and atomic exchange when possible.
Reviewed-by: kvn, jrose

7187454: stack overflow in C2 compiler thread on Solaris x86
Summary: Added new FormatBufferResource class to use thread's resource area for error message buffer.
Reviewed-by: twisti

7023639: JSR 292 method handle invocation needs a fast path for compiled code
6984705: JSR 292 method handle creation should not go through JNI
Summary: remove assembly code for JDK 7 chained method handles
Reviewed-by: jrose, twisti, kvn, mhaupt
Contributed-by: John Rose <john.r.rose@oracle.com>, Christian Thalinger <christian.thalinger@oracle.com>, Michael Haupt <michael.haupt@oracle.com>

7154997: assert(false) failed: not G1 barrier raw StoreP
Summary: Skip only G1 cases and explicitly set global escape state in unsafe cases.
Reviewed-by: never

7147744: CTW: assert(false) failed: infinite EA connection graph build
Summary: rewrote Connection graph construction code in EA to reduce time spent there.
Reviewed-by: never

7146442: assert(false) failed: bad AD file
Summary: Take into account only stores captured by Initialize node. Added missing check for Top input in value() methods.
Reviewed-by: never

7129284: +DoEscapeAnalysis regression w/ early build of 7u4 (HotSpot 23) on Linux
Summary: Removed code which tried to create edges from fields of destination objects of arraycopy to fields of source objects. Added 30 sec time limit for EA graph construction.
Reviewed-by: never

7125896: Eliminate nested locks
Summary: Nested locks elimination done before lock nodes expansion by looking for outer locks of the same object.
Reviewed-by: never, twisti

7121140: Allocation paths require explicit memory synchronization operations for RMO systems
Summary: adds store store barrier after initialization of header and body of objects.
Reviewed-by: never, kvn

7112478: after 7105605 JRuby bench_define_method_methods.rb fails with NPE
Summary: Fixed several EA issues with Connection Graph construction.
Reviewed-by: never, twisti

6890673: Eliminate allocations immediately after EA
Summary: Try to eliminate allocations and related locks immediately after escape analysis.
Reviewed-by: never

7105605: Use EA info to optimize pointers compare
Summary: optimize pointers compare using EA information.
Reviewed-by: never, twisti

7059047: EA: can't find initializing store with several CheckCastPP
Summary: Split adjust_escape_state() method into two methods to find initializing stores.
Reviewed-by: never

7059039: EA: don't change non-escaping state of NULL pointer
Summary: NULL pointers do not escape but escape state propagation may change it leading to worser results.
Reviewed-by: never

7050280: assert(u->as_Unlock()->is_eliminated()) failed: sanity
Summary: Mark all associated (same box and obj) lock and unlock nodes for elimination if some of them marked already.
Reviewed-by: iveresov, never

7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
Summary: memory slices should be always created for non-static fields after allocation
Reviewed-by: never

6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
Summary: Swap checks: check for regular memory slice first and keep input phi.
Reviewed-by: never

7013538: Java memory leak with escape analysis
Summary: Don't allocate VectorSet iterator on C heap. Reuse resource storage in EA.
Reviewed-by: never

7003130: assert(iterations<CG_BUILD_ITER_LIMIT) failed: infinite EA connection graph
Summary: bump CG_BUILD_ITER_LIMIT to 20
Reviewed-by: iveresov

6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

6991188: C2 Crashes while compiling method
Summary: Do several iterations to build EA Connection Graph.
Reviewed-by: never, twisti, ysr

6982537: Crash in Node*step_through_mergemem
Reviewed-by: kvn

6966411: escape.cpp:450 assert(base->Opcode() == Op_ConP
Summary: Execute IGVN optimization before and after Escape Analysis
Reviewed-by: never

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

6953267: assert in EA code with -XX:+StressReflectiveCode
Summary: Add missing checks into EA code.
Reviewed-by: never

6913075: EA identifies escape state incorrectly after 6895383 fix
Summary: EA incorrectly identifies escape state of an allocation passed as call argument.
Reviewed-by: never

6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
Summary: Move instance store's memory users to corresponding memory slices when updating its memory edge.
Reviewed-by: never

6895383: JCK test throws NPE for method compiled with Escape Analysis
Summary: Add missing checks for MemBar nodes in EA.
Reviewed-by: never

6902036: WorldWind asserts on escape.cpp:1153: assert(addr->is_AddP(),"AddP required")
Summary: Remove the assert.
Reviewed-by: twisti

6896352: CTW fails hotspot/src/share/vm/opto/escape.cpp:1155
Summary: Always call C->get_alias_index(phase->type(address)) during parsing.
Reviewed-by: never

6879362: assert(!klass_is_exact(),"only non-exact klass")
Summary: Do nothing for AddP node which has type not related to the type of allocated object.
Reviewed-by: never

6880574: C2 assert in escape.cpp:445 on linux-amd64
Summary: Look through chained AddP nodes in get_addp_base().
Reviewed-by: jrose

Merge

6851742: (EA) allocation elimination doesn't work with UseG1GC
Summary: Fix eliminate_card_mark() to eliminate G1 pre/post barriers.
Reviewed-by: never

6862919: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 07/09
Reviewed-by: tbell, ohair

6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
Summary: Do not mark an allocation as scalar replaceable if its actual type in unknown statically.
Reviewed-by: never

6810672: Comment typos
Summary: I have collected some typos I have found while looking at the code.
Reviewed-by: kvn, never

6802499: EA: assert(false,"unknown node on this path")
Summary: Add missing checks for SCMemProj node in Escape analysis code.
Reviewed-by: never

6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
Summary: Create new "eliminated" BoxLock node for monitor debug info when corresponding locks are eliminated.
Reviewed-by: never

6732732: CTW with EA: assert(n != 0L,"Bad immediate dominator info.")
Summary: Missing edge to a call's return value in EA Connection Graph.
Reviewed-by: never

6741738: TypePtr::add_offset() set incorrect offset when the add overflows
Summary: Set offset to OffsetBot when the add overflows in TypePtr::add_offset()
Reviewed-by: jrose, never

6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
Summary: fixed few addP node type and narrow oop type problems.
Reviewed-by: rasbold, never

6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
Summary: Escape Analysis fixes.
Reviewed-by: never, rasbold

6723160: Nightly failure: Error: meet not symmetric
Summary: Add missing _instance_id settings and other EA fixes.
Reviewed-by: rasbold

Merge

6684714: Optimize EA Connection Graph build performance
Summary: switch on EA by default, optimize Connection Graph construction
Reviewed-by: rasbold, never

Merge

6716441: error in meet with +DoEscapeAnalysis
Summary: Set instance_id to InstanceBot for InstPtr->meet(AryPtr) when types are not related.
Reviewed-by: jrose, never

6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
Summary: Remove DecodeNNode::decode() and EncodePNode::encode() methods.
Reviewed-by: rasbold, never

6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell

6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
Summary: Generate addresses and implicit null checks with narrow oops to avoid decoding.
Reviewed-by: jrose, never

6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
Summary: Add LoadNKlass and CMoveN nodes, use CmpN and ConN nodes to generate narrow oops compare instructions.
Reviewed-by: never, rasbold

6695810: null oop passed to encode_heap_oop_not_null
Summary: fix several problems in C2 related to Escape Analysis and Compressed Oops.
Reviewed-by: never, jrose

6689060: Escape Analysis does not work with Compressed Oops
Summary: 64-bits VM crashes with -XX:+AggresiveOpts (Escape Analysis + Compressed Oops)
Reviewed-by: never, sgoldman

6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold

Merge

6681577: PIT: some VM tests fails with -XX:+AggressiveOpts in 6u5p b01
Summary: C2 spends > 60% in escape analysis code during test nsk/regression/b4675027.
Reviewed-by: never

6679854: assert in escape.cpp:397
Summary: The assert misses the case CastX2P 'base' for an unsafe field reference
Reviewed-by: never, jrose

6674588: (Escape Analysis) Improve Escape Analysis code
Summary: Current EA code has several problems which have to be fixed.
Reviewed-by: jrose, sgoldman

6667612: (Escape Analysis) disable loop cloning if it has a scalar replaceable allocation
Summary: Cloning an allocation will not allow scalar replacement since memory operations could not be associated with one allocation.
Reviewed-by: rasbold

6667610: (Escape Analysis) retry compilation without EA if it fails
Summary: During split unique types EA could exceed nodes limit and fail the method compilation.
Reviewed-by: rasbold

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