Merge

8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
8182656: Make the required changes in GC code to build on OSX 10 + Xcode 8
8182657: Make the required changes in Runtime code to build on OSX 10 + Xcode 8
8182658: Make the required changes in Compiler code to build on OSX 10 + Xcode 8
Reviewed-by: jwilhelm, ehelin, phh
Contributed-by: phh <hohensee@amazon.com>, jwilhelm <jesper.wilhelmsson@oracle.com>

8181211: C2: Use profiling data to optimize on/off heap unsafe accesses
Reviewed-by: kvn

8176506: C2: loop unswitching and unsafe accesses cause crash
Reviewed-by: vlivanov, mcberg, kvn, simonis

Merge

Merge

8171813: Reported null pointer dereference defect groups
Summary: Added required explicit NULL checks
Reviewed-by: thartmann, zmajo

Merge

Merge

Merge

8172285: UL support for PrintCompilation
Reviewed-by: kvn

8181742: Load that bypasses arraycopy has wrong memory state
Summary: Set load memory edge to the memory state right before the arraycopy.
Reviewed-by: kvn, thartmann

8181292: Backport Rename internal Unsafe.compare methods from 10 to 9
Reviewed-by: psandoz, dholmes, thartmann, kvn
Contributed-by: ron.pressler@oracle.com, claes.redestad@oracle.com

8159995: Rename internal Unsafe.compare methods
Reviewed-by: psandoz, dholmes
Contributed-by: ron.pressler@oracle.com

8158168: Missing bounds checks for some String intrinsics
Reviewed-by: vlivanov, thartmann, sherman

8177346: hotspot change for 8176513 breaks jdk9 build on Ubuntu 16.04
Reviewed-by: dholmes, kvn, vlivanov

8176513: Poor code quality for ByteBuffers
Summary: Relaxes the condition under which MemBarCPUOrder nodes are added around unsafe accesses.
Reviewed-by: vlivanov, kvn, jrose

8174164: SafePointNode::_replaced_nodes breaks with irreducible loops
Reviewed-by: kvn

8172434: CompareAndExchangeObject inserts two pre-barriers
Reviewed-by: kvn

8172199: s390: Use same get_key_start_from_aescrypt_object implementation as PPC64
Reviewed-by: kvn

8169201: Montgomery multiply intrinsic should use correct name
Summary: Corrected stubName to montgomery_multiply for inline_montgomeryMultiply()
Reviewed-by: aph, thartmann, zmajo

8159611: C2: ArrayCopy elimination skips required parameter checks
Reviewed-by: kvn, zmajo, thartmann

8168662: Intrinsic support for event based tracing needs explicit control dependency
Reviewed-by: kvn, rehn

8166806: Add intrinsic support for writer used in event based tracing
Reviewed-by: kvn, egahlin

Merge

8154122: Intrinsify fused mac operations
Summary: added FMA intrinsics on x86
Reviewed-by: kvn, aph, darcy

Merge

8161720: Better byte behavior for off-heap data
Summary: Normalize boolean values read with Unsafe.
Reviewed-by: aph, simonis, jrose, psandoz

8163589: Add back class id intrinsic method for event based tracing
Reviewed-by: kvn, mgronlun

8155635: C2: Mixed unsafe accesses break alias analysis
Reviewed-by: jrose, kvn

8162101: C2: Handle "wide" aliases for unsafe accesses
Reviewed-by: kvn

Merge

8160360: Mismatched field loads are folded in LoadNode::Value
Reviewed-by: kvn, thartmann

8159129: TestStringIntrinsicRangeChecks fails w/ No exception thrown for compressByte/inflateByte
Summary: Need to convert char offsets to byte offsets before range check.
Reviewed-by: vlivanov

8160651: StubRoutines::_dtan does not restore callee save register rbx
Summary: Pop rbx before leaving stub.
Reviewed-by: vlivanov, vdeshpande

8161258: Simplify including platform files.
Summary: Include patform files with macros cpu_header() etc. Do various cleanups of macro usages. Remove _64/_32 from adlc generated files and platform .hpp files. Merge stubRoutines_x86*.hpp. Remove empty mutex_<os>* files.
Reviewed-by: dholmes, coleenp, kbarrett

8155781: C2: opaque unsafe access triggers an assert
Reviewed-by: kvn, lmesnik, ppunegov

8157726: VarHandles/Unsafe should support sub-word atomic ops
Reviewed-by: psandoz, vlivanov, lagergren

8152856: Xcode 7.3 -Wshift-negative-value compile failure on Mac OS X
Summary: Implement _lh_array_tag_type_value as const, not enum.
Reviewed-by: vlivanov, minqi

8141635: Implement VarHandles/Unsafe intrinsics on POWER
Reviewed-by: shade, kvn, simonis

Merge

Merge

8155965: Unsafe.weakCompareAndSetVolatile entry points and intrinsics
Reviewed-by: psandoz, vlivanov

8156068: Unsafe.{get|set}Opaque should be single copy atomic
Reviewed-by: psandoz, vlivanov

Merge

8155794: Move Objects.checkIndex BiFunction accepting methods to an internal package
Reviewed-by: shade, vlivanov

8150921: Update Unsafe getters/setters to use double-register variants
Reviewed-by: dholmes, shade, psandoz, jrose

8134918: C2: Type speculation produces mismatched unsafe accesses
Reviewed-by: kvn

Merge

8152590: C2: @Stable support doesn't always work w/ incremental inlining
Reviewed-by: kvn

8152907: Update for x86 tan and log10 in the math lib
Summary: Optimize Math.tan() and log10() for 64 and 32 bit X86 architecture using Intel LIBM implementation.
Reviewed-by: kvn, twisti
Contributed-by: shravya.rukmannagari@intel.com

8147844: new method j.l.Runtime.onSpinWait() and the corresponding x86 hotspot instrinsic
Summary: adds c1 & c2 x86 intrinsics for j.l.Runtime.onSpinWait() that utilize the PAUSE instruction
Reviewed-by: iveresov, kvn
Contributed-by: Ivan Krylov <ivan@azul.com>, Yuri Gaevsky <ygaevsky@azul.com>

Merge

8152172: PPC64: Support AES intrinsics
Reviewed-by: kvn, mdoerr, simonis
Contributed-by: horii@jp.ibm.com

Merge

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

8152698: Remove obsolete Unsafe.putOrdered{X} methods, usages, runtime and compiler support
Reviewed-by: kvn, psandoz

Merge

Merge

8150465: Unsafe methods to produce uninitialized arrays
Reviewed-by: jrose, kvn, psandoz, aph, twisti, flar

8149159: Clean up Unsafe
Reviewed-by: jrose, kvn, stsmirno, chegar, aph, psandoz, redestad, twisti

8142968: Module System implementation
Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282
Reviewed-by: acorn, ccheung, coleenp, ctornqvi, dholmes, dsimms, gtriantafill, iklam, jiangli, mgronlun, mseledtsov, cjplummer, sspitsyn, stefank, twisti, hseigel, lfoltan, alanb, mchung, dfazunen
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, harold.seigel@oracle.com, lois.foltan@oracle.com, calvin.cheung@oracle.com, christian.tornqvist@oracle.com, erik.joelsson@oracle.com, george.triantafillou@oracle.com, igor.ignatyev@oracle.com, ioi.lam@oracle.com, james.laskey@oracle.com, jean-francois.denise@oracle.com, jiangli.zhou@oracle.com, markus.gronlund@oracle.com, serguei.spitsyn@oracle.com, staffan.larsen@oracle.com, sundararajan.athijegannathan@oracle.com

Merge

8143226: Minor updates to Event Based tracing
Reviewed-by: jbachorik, egahlin

8150543: Mismatched access detection is inaccurate
Reviewed-by: kvn, shade

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

8150180: String.value contents should be trusted
Reviewed-by: vlivanov, redestad, jrose, twisti

Merge

8148047: Move the vtable length field to Klass
Reviewed-by: cjplummer, twisti, coleenp, kbarrett

8147461: Use byte offsets for vtable start and vtable length offsets
Reviewed-by: cjplummer, coleenp, dnsimon

8145336: PPC64: fix string intrinsics after CompactStrings change
Reviewed-by: mdoerr, aph, kvn

8144212: JDK 9 b93 breaks Apache Lucene due to compact strings
Summary: String compress/inflate intrinsics need to capture char and byte memory.
Reviewed-by: aph, roland, kvn

8086053: Address inconsistencies regarding ZeroTLAB
Summary: Add zero-initialization to C1 for fast TLAB refills; strenghten C2 conditions for skipping zero-initialization.
Reviewed-by: kvn, thartmann

8133612: new clone logic added in 8042235 is missing from compiler intrinsics
Reviewed-by: roland

8143353: update for x86 sin and cos in the math lib
Summary: Optimize Math.sin() and cos() for 64 and 32 bit X86 architecture using Intel LIBM implementation.
Reviewed-by: kvn

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

8145688: Update for x86 pow in the math lib
Summary: Optimizes Math.pow() for 64 and 32 bit X86 architecture using Intel LIBM implementation.
Reviewed-by: kvn
Contributed-by: vivek.r.deshpande@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

8072008: Emit direct call instead of linkTo* for recursive indy/MH.invoke* calls
Reviewed-by: jrose, dlong, aph, forax

8142303: C2 compilation fails with "bad AD file"
Summary: Move range checks into intrinsics for String methods.
Reviewed-by: kvn, aph

8140390: Char stores/loads accessing byte arrays must be marked as unmatched
Summary: Mark unmatched char stores/loads emitted by CompactStrings.
Reviewed-by: roland, vlivanov, jrose

8142386: Octane crashes with assert(is_Load())
Summary: Unsafe access to an array is wrongly marked as mismatched
Reviewed-by: vlivanov, thartmann

Merge

Merge

8042997: Make intrinsic some or all check index/range methods
Summary: Objects.checkIndex() intrinsic
Reviewed-by: vlivanov, shade

8140309: [REDO] failed: no mismatched stores, except on raw memory: StoreB StoreI
Summary: Mismatched stores on same slice possible with Unsafe.Put*Unaligned methods
Reviewed-by: kvn, thartmann

8141629: Hs-comp doesn't build with JDK-8139040
Summary: Fix benign uninitialized vars
Reviewed-by: roland

Merge

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>

Merge

8139891: Prepare Unsafe for true encapsulation
Reviewed-by: alanb, dholmes, jrose, psandoz, twisti

8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
Reviewed-by: stuefe, coleenp, roland

8139575: Update for x86 log in the math lib
Summary: Add new java.lang.Math() intrinsics from x86
Reviewed-by: kvn, iveresov
Contributed-by: vivek.r.deshpande@intel.com

8140267: assert(is_native_ptr || alias_type->adr_type() == TypeOopPtr::BOTTOM || alias_type->field() != __null || alias_type->element() != __null) failed: field, array element or unknown
Summary: back out 8136473
Reviewed-by: twisti

8137167: JEP165: Compiler Control: Implementation task
Summary: Compiler Control JEP
Reviewed-by: roland, twisti, zmajo, simonis

8136473: failed: no mismatched stores, except on raw memory: StoreB StoreI
Summary: Mismatched stores on same slice possible with Unsafe.Put*Unaligned methods
Reviewed-by: kvn, thartmann

Merge

8139259: aarch64: jtreg test TestLogSum segvs after 8132207
Summary: Fix jump to 0 caused by uninitialised _dexp in 8132207
Reviewed-by: roland, kvn

Merge

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

8132207: update for x86 exp in the math lib
Summary: Add new java.lang.Math() intrinsics from x86
Reviewed-by: kvn, iveresov
Contributed-by: vivek.r.deshpande@intel.com

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

8019968: Reference CAS induces GC store barrier even on failure
Reviewed-by: kvn, adinn, roland

8132457: Unify command-line flags controlling the usage of compiler intrinsics
Summary: Cleanup processing of command-line flags controlling intrinsics.
Reviewed-by: kvn

8130832: Extend the WhiteBox API to provide information about the availability of compiler intrinsics
Summary: Add a new method, sun.hotspot.WhiteBox.isIntrinsicAvailable, that can be used to determine if an intrinsic is available.
Reviewed-by: kvn, jrose

Merge

8078629: VM should constant fold Unsafe.get*() loads from final fields
Reviewed-by: kvn, jrose, psandoz

8075171: Contended Locking fast notify bucket
Summary: JEP-143/JDK-8073165 Contended Locking fast notify bucket
Reviewed-by: dholmes, acorn, dice, dcubed
Contributed-by: dave.dice@oracle.com, karen.kinnear@oracle.com, daniel.daugherty@oracle.com

8076112: Add @HotSpotIntrinsicCandidate annotation to indicate methods for which Java Runtime has intrinsics
Summary: Annotate possibly intrinsified methods with @HotSpotIntrinsicCandidate. Add checks omitted by intrinsics to the library code. Add CheckIntrinsics flags to check consistency of intrinsics.
Reviewed-by: jrose, kvn, thartmann, vlivanov, abuckley, darcy, ascarpino, briangoetz, alanb, aph, dnsimon

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

8074551: GWT can be marked non-compilable due to deopt count pollution
Reviewed-by: kvn

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

8077504: Unsafe load can loose control dependency and cause crash
Summary: Node::depends_only_on_test() should return false for Unsafe loads
Reviewed-by: kvn, adinn

8074676: java.lang.invoke.PermuteArgsTest.java fails with "assert(is_Initialize()) failed: invalid node class"
Summary: after guards in Arrays.copyOf() intrinsic, control may become top
Reviewed-by: kvn, vlivanov

8026049: (bf) Intrinsify ByteBuffer.put{Int, Double, Float, ...} methods
Summary: Use unaligned Unsafe loads and stores for ByteBuffer access on platforms which support unaligned access. Add intrinsics for Unsafe.{get,put}-X-Unaligned methods.
Reviewed-by: dholmes, jrose, psandoz, kvn

8075921: assert assert(allocx == alloc) fails in library_call.cpp
Summary: control becomes top after arraycopy guards and confuses tighly coupled allocation logic
Reviewed-by: kvn, vlivanov

Merge

8074548: Never-taken branches cause repeated deopts in MHs.GWT case
Reviewed-by: jrose, kvn

8075263: MHI::checkCustomized isn't eliminated for inlined MethodHandles
Reviewed-by: jrose, kvn

8073866: Fix for 8064703 is not sufficient
Summary: side effects between allocation and arraycopy can be reexecuted, unreachable uninitialized array can be seen by GCs
Reviewed-by: kvn, vlivanov

8073796: assert(check_obj_alignment(result)) failed: address not aligned: ...
Summary: Arrays.copyOf intrinsic can deoptimize with uninitialized new array
Reviewed-by: kvn

Merge

6912521: System.arraycopy works slower than the simple loop for little lengths
Summary: convert small array copies to series of loads and stores
Reviewed-by: kvn, vlivanov

8068687: Remove meta-index support and cleanup hotspot code for rt.jar etc in non-modular jdk image
Summary: Remove the meta-index code and rt.jar code and comments
Reviewed-by: mchung, gtriantafill

Merge

8068977: Remove unused sun.misc.Unsafe prefetch intrinsic support
Reviewed-by: kvn, vlivanov

8072016: Array copy may cause infinite cycle of deoptimization/compilation
Summary: Infinite deoptimization/recompilation cycles in case of arraycopy with tightly coupled allocation
Reviewed-by: kvn, vlivanov

8063137: Never-taken branches should be pruned when GWT LambdaForms are shared
Reviewed-by: jrose, kvn

8069580: String intrinsic related cleanups
Summary: Small cleanup of string intrinsic related code.
Reviewed-by: kvn, roland

6700100: optimize inline_native_clone() for small objects with exact klass
Summary: optimize small instance clones as loads/stores
Reviewed-by: kvn, iveresov

8064703: crash running specjvm98's javac following 8060252
Summary: uncommon trap between arraycopy and initialization may leave array initialized
Reviewed-by: kvn, vlivanov, goetz

8057622: java/util/stream/test/org/openjdk/tests/java/util/stream/InfiniteStreamWithLimitOpTest: SEGV inside compiled code (sparc)
Summary: In Parse::array_store_check(), add control edge FROM IfTrue branch of runtime type check of the destination array TO loading _element_klass from destination array.
Reviewed-by: kvn, roland, anoll

8060252: JDK-7173584 compiler changes regress SPECjvm2008 on SPARC
Summary: arraycopy code misses opportunities to optimize copies to just allocated array.
Reviewed-by: kvn

8054492: Casting can result in redundant null checks in generated code
Summary: add C2 intrinsic for Class.cast() method and force inline it too.
Reviewed-by: jrose, roland, drchase, iignatyev

8057758: Tests run TypeProfileLevel=222 crash with guarantee(0) failed: must find derived/base pair
Summary: Use TypeAryPtr::INT type with offset 0 in inline_multiplyToLen().
Reviewed-by: kvn, iveresov

Merge

8055910: closed/java/util/Collections/CheckedCollections.java failed with ClassCastException not thrown
Summary: missing subtype check for Arrays.copyOf intrinsic
Reviewed-by: kvn, iveresov

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

8049105: Move array component mirror to instance of java/lang/Class (hotspot part 2)
Summary: This removes component mirrors from arrayKlass metadata and the C2 intrinsic for them.
Reviewed-by: kvn, twisti, mgerdin

8055153: nsk/stress/jck60/jck60014 crashes on sparc
Summary: missing control for LoadRange and LoadKlass nodes created during arraycopy node expansion
Reviewed-by: kvn, iveresov

8054927: Missing MemNode::acquire ordering in some volatile Load nodes
Summary: Fixed memory ordering parameter and added missing barriers for volatile loads.
Reviewed-by: roland, iveresov

7173584: Implement arraycopy as a macro node
Summary: delay the conversion of arraycopy to stub calls to macro expansion
Reviewed-by: kvn, iveresov

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

8049325: Introduce and clean up umbrella headers for the files in the cpu subdirectories.
Summary: Introduce and clean up umbrella headers for the files in the cpu subdirectories.
Reviewed-by: lfoltan, coleenp, dholmes

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

8035605: Expand functionality of PredictedIntrinsicGenerator
Summary: Allow several predicates and separate intrinsic methods per one intrinsified (virtual) method.
Reviewed-by: roland

8026796: Make replace_in_map() on parent maps generic
Summary: propagate node replacements along control flow edges to callers
Reviewed-by: kvn, vlivanov

8033626: assert(ex_map->jvms()->same_calls_as(_exceptions->jvms())) failed: all collected exceptions must come from the same place
Reviewed-by: kvn, roland

8034812: remove IDX_INIT macro hack in Node class
Summary: The IDX_INIT macro used by Node::Node(...) to retrieve the Compile object is removed and replaced by a call to Compile::current(). The Node constructor, new operator and all calls to it are adapted accordingly.
Reviewed-by: kvn, jrose, iveresov, goetz

8011646: SEGV in compiled code with loop predication
Summary: Remove control edge of load node to ensure that castPP removal sets the control edge correctly
Reviewed-by: kvn, roland

8025580: Temporary flags: UseNewReflection and ReflectionWrapResolutionErrors
Summary: The fix removes all UseNewReflection/ReflectionWrapResolutionErrors occurrences/logic and adds them into the list of obsolete_jvm_flags in arguments.cpp.
Reviewed-by: coleenp, hseigel
Contributed-by: ygaevsky@azulsystems.com

8042052: assert(t != NULL) failed: must set before get
Summary: Added missing call to _gvn.transform to make sure the type of the PhiNode is recorded in the gvn.
Reviewed-by: kvn
Contributed-by: Tobias Hartmann <tobias.hartmann@oracle.com>

8029302: Performance regression in Math.pow intrinsic
Summary: Added special case for x^y where y == 2
Reviewed-by: kvn, roland

8007988: PrintInlining output is inconsistent with incremental inlining
Summary: fix duplicate and conflicting inlining output
Reviewed-by: kvn, vlivanov

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

8031755: Type speculation should be used to optimize explicit null checks
Summary: feed profiling data about reference nullness to type speculation.
Reviewed-by: kvn, iveresov

6653795: C2 intrinsic for Unsafe.getAddress performs pointer sign extension on 32-bit systems
Summary: Native pointers less than 64 bits wide should be extended as an unsigned number.
Reviewed-by: kvn, kevinw

8036102: part of the fix for 6498581 lost in mismerge
Summary: Restore code lost in mis-merge
Reviewed-by: dcubed

Merge

6498581: ThreadInterruptTest3 produces wrong output on Windows
Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set.
Reviewed-by: acorn, kvn
Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com

8027754: Enable loop optimizations for loops with MathExact inside
Reviewed-by: kvn, iveresov

8035394: PPC64: Make usage of intrinsic dsqrt depend on processor recognition.
Reviewed-by: kvn

Merge

8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes
Reviewed-by: dholmes, kvn
Contributed-by: martin.doerr@sap.com

8028515: PPPC64 (part 113.2): opto: Introduce LoadFence/StoreFence.
Summary: Use new nodes for loadFence/storeFence intrinsics in C2.
Reviewed-by: kvn, dholmes

8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering
Summary: Add a field to C2 LoadNode and StoreNode classes which indicates whether the load/store should do an acquire/release on platforms which support it.
Reviewed-by: kvn

8002074: Support for AES on SPARC
Summary: Add intrinsics/stub routines support for single-block and multi-block (as used by Cipher Block Chaining mode) AES encryption and decryption operations on the SPARC platform.
Reviewed-by: kvn, roland
Contributed-by: shrinivas.joshi@oracle.com

8027353: Exact intrinsics: assert(n != NULL) failed: must not be null
Reviewed-by: kvn, roland

8026844: Various Math functions needs intrinsification
Reviewed-by: kvn, twisti

8024070: C2 needs some form of type speculation
Summary: record unused type profile information with type system, propagate and use it.
Reviewed-by: kvn, twisti

8024069: replace_in_map() should operate on parent maps
Summary: type information gets lost because replace_in_map() doesn't update parent maps
Reviewed-by: kvn, twisti

8014447: Object.hashCode intrinsic breaks inline caches
Summary: Try to inline as normal method first, then fall back to intrinsic.
Reviewed-by: kvn, twisti

8024924: Intrinsify java.lang.Math.addExact
Reviewed-by: kvn, twisti

8022585: VM crashes when ran with -XX:+PrintInlining
Summary: use adr_at() to access inline info structures in growableArray. Add ability to specify print inlining per method.
Reviewed-by: twisti

Merge

8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
Summary: Enhance method resolution and resulting data structures, plus some refactoring.
Reviewed-by: twisti, acorn, jrose

Merge

8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel

8001107: @Stable annotation for constant folding of lazily evaluated variables
Reviewed-by: rbackman, twisti, kvn
Contributed-by: john.r.rose@oracle.com, vladimir.x.ivanov@oracle.com

8023597: Optimize G1 barriers code for unsafe load_store
Summary: Avoid loading old values in G1 pre-barriers for inlined unsafe load_store nodes.
Reviewed-by: kvn, tonyp
Contributed-by: Martin Doerr <martin.doerr@sap.com>

8022675: Redundant class init check
Reviewed-by: kvn, twisti

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>

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

Merge

8004336: Better handling of method handle intrinsic frames
Reviewed-by: kvn, jrose, ahgross

7198429: need checked categorization of caller-sensitive methods in the JDK
Reviewed-by: kvn, jrose

8007959: Use expensive node logic for more math nodes
Summary: use expensive node logic for other more math nodes.
Reviewed-by: kvn

7197327: 40% regression on 8 b41 comp 8 b40 on specjvm2008.mpegaudio on oob
Summary: Add support for expensive nodes.
Reviewed-by: kvn

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

8006127: remove printing code added with 8006031
Reviewed-by: kvn

8006031: LibraryCallKit::inline_array_copyOf disabled unintentionally with 7172640
Reviewed-by: kvn

Merge

8004318: JEP-171: Support Unsafe fences intrinsics
Summary: Add three memory-ordering intrinsics to the sun.misc.Unsafe class.
Reviewed-by: twisti, kvn
Contributed-by: Aleksey Shipilev <aleksey.shipilev@oracle.com>

Merge

8003135: HotSpot inlines and hoists the Thread.currentThread().isInterrupted() out of the loop
Summary: Make the load of TLS._osthread._interrupted flag in Thread.isInterrupted(Z)Z intrinsic effectively volatile.
Reviewed-by: kvn, jrose

8005031: Some cleanup in c2 to prepare for incremental inlining support
Summary: collection of small changes to prepare for incremental inlining.
Reviewed-by: twisti, kvn

8004898: library_call.cpp build error after 7172640 with GCC 4.7.2
Summary: fix opto/library_call.cpp compilation errors
Reviewed-by: twisti, coleenp

8004319: test/gc/7168848/HumongousAlloc.java fails after 7172640
Reviewed-by: kvn, johnc

7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
Reviewed-by: kvn, jrose

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

8000623: tools/javac/Diagnostics/6769027/T6769027.java crashes in PSPromotionManager::copy_to_survivor_space
Summary: Fix type of method pointer load from vtable.
Reviewed-by: twisti, johnc, roland

Merge

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

8000263: JSR 292: signature types may appear to be unloaded
Reviewed-by: kvn, jrose

8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
Summary: Capitalize these metadata types (and objArrayKlass)
Reviewed-by: stefank, twisti, kvn

7193318: C2: remove number of inputs requirement from Node's new operator
Summary: Deleted placement new operator of Node - node(size_t, Compile *, int).
Reviewed-by: kvn, twisti
Contributed-by: bharadwaj.yadavalli@oracle.com

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

6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
Summary: In C2 add software membar after load from Reference.referent field to prevent commoning of loads across safepoint since GC can change its value. In C1 always generate Reference.get() intrinsic.
Reviewed-by: roland, twisti, dholmes, johnc

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>

7177917: Failed test java/lang/Math/PowTests.java
Summary: When c2 intrinsifies pow/exp, it should never inline the java implementations.
Reviewed-by: kvn

7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
Summary: Arrays.copyOfRange(original, from, to) with from > original.length tries to do a copy with a negative length.
Reviewed-by: kvn, twisti

7174218: remove AtomicLongCSImpl intrinsics
Reviewed-by: kvn, twisti
Contributed-by: Krystal Mok <sajia@taobao.com>

7133857: exp() and pow() should use the x87 ISA on x86
Summary: use x87 instructions to implement exp() and pow() in interpreter/c1/c2.
Reviewed-by: kvn, never, twisti

6924259: Remove String.count/String.offset
Summary: Allow a version of String class that doesn't have count and offset fields.
Reviewed-by: never, coleenp

7160570: Intrinsification support for tracing framework
Reviewed-by: sla, never

7152957: VM crashes with assert(false) failed: bad AD file
Reviewed-by: kvn, never
Contributed-by: nils.eliasson@oracle.com

6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
Summary: Allow fallback to non-intrinsic inline case
Reviewed-by: kvn, jrose, never
Contributed-by: nils.eliasson@oracle.com

Merge

7132690: InstanceKlass:_reference_type should be u1 type
Summary: Change InstanceKlass::_reference_type to u1 type.
Reviewed-by: dholmes, coleenp, acorn
Contributed-by: Jiangli Zhou <jiangli.zhou@oracle.com>

7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
Summary: Adjust the assert and code in eliminate_card_mark() method for case when stored value is NULL.
Reviewed-by: iveresov, never

7128352: assert(obj_node == obj) failed
Summary: Compare uncasted object nodes.
Reviewed-by: never

Merge

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

7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
Summary: Moved sizeof(klassOopDesc), changed the return type to ByteSize and removed the _in_bytes suffix.
Reviewed-by: never, bdelsart, coleenp, jrose

7117052: instanceKlass::_init_state can be u1 type
Summary: Change instanceKlass::_init_state field to u1 type.
Reviewed-by: bdelsart, coleenp, dholmes, phh, never
Contributed-by: Jiangli Zhou <jiangli.zhou@oracle.com>

7081933: Use zeroing elimination optimization for large array
Summary: Don't zero new typeArray during runtime call if the allocation is followed by arraycopy into it.
Reviewed-by: twisti

7047069: Array can dynamically change size when assigned to an object field
Summary: Fix initialization of a newly-allocated array with arraycopy
Reviewed-by: never

7041100: The load in String.equals intrinsic executed before null check
Summary: Remove control from loads in String.equals intrinsic and cast argument to not-null.
Reviewed-by: never

Merge

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

7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
Summary: Missing parentheses around a casted expression and some missing casts were causing build failures with the jdk6 build tools.
Reviewed-by: kvn, brutisso

Merge

7035117: G1: nsk/stress/jni/jnistress002 fails with assertion failure
Summary: Allow long type for offset in G1 code in compiler implementations of Unsafe.getObject
Reviewed-by: never, iveresov

Merge

7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
Summary: A referent object that is only weakly reachable at the start of concurrent marking but is re-attached to the strongly reachable object graph during marking may not be marked as live. This can cause the reference object to be processed prematurely and leave dangling pointers to the referent object. Implement a read barrier for the java.lang.ref.Reference::referent field by intrinsifying the Reference.get() method, and intercepting accesses though JNI, reflection, and Unsafe, so that when a non-null referent object is read it is also logged in an SATB buffer.
Reviewed-by: kvn, iveresov, never, tonyp, dholmes

7033154: Improve C1 arraycopy performance
Summary: better static analysis. Take advantage of array copy stubs.
Reviewed-by: never

7032314: Allow to generate CallLeafNoFPNode in IdealKit
Summary: Added CallLeafNoFPNode generation to IdealKit. Added i_o synchronization.
Reviewed-by: never

7022998: JSR 292 recursive method handle calls inline themselves infinitely
Reviewed-by: never, kvn

Merge

7008866: Missing loop predicate for loop with multiple entries
Summary: Add predicates when loop head bytecode is parsed instead of when back branch bytecode is parsed.
Reviewed-by: never

6962931: move interned strings out of the perm gen
Reviewed-by: never, coleenp, ysr, jwilhelm

6627983: G1: Bad oop deference during marking
Summary: Bulk zeroing reduction didn't work with G1, because arraycopy would call pre-barriers on uninitialized oops. The solution is to have version of arraycopy stubs that don't have pre-barriers. Also refactored arraycopy stubs generation on SPARC to be more readable and reduced the number of stubs necessary in some cases.
Reviewed-by: jrose, kvn, never

6942326: x86 code in string_indexof() could read beyond reserved heap space
Summary: copy small (<8) strings on stack if str+16 crosses a page boundary and load from stack into XMM. Back up pointer when loading string's tail.
Reviewed-by: never

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

6980792: Crash "exception happened outside interpreter, nmethods and vtable stubs (1)"
Reviewed-by: kvn

6978355: renaming for 6961697
Summary: This is the renaming part of 6961697 to keep the actual changes small for review.
Reviewed-by: kvn, never

6912064: type profiles need to be exploited more for dynamic language support
Reviewed-by: kvn

6959430: Make sure raw loads have control edge
Summary: check that raw loads have control edge
Reviewed-by: never, twisti

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

Merge

6948602: Disable use of SSE4.2 in String.indexOf intrinsic until 6942326 is fixed
Summary: Disable the use of pcmpestri until it can be guaranteed that the load doesn't cross in to the uncommited space. See 6942326.
Reviewed-by: never, kvn

6951190: assert(!klass_is_exact(),"only non-exact klass") while building JDK
Reviewed-by: kvn

6946040: add intrinsic for short and char reverseBytes
Reviewed-by: never, twisti
Contributed-by: Hiroshi Yamauchi <yamauchi@google.com>

6914206: change way of permission checking for generated MethodHandle adapters
Summary: Put generated MH adapter in InvokeDynamic/MethodHandle classes to be able to indentify them easily in the compiler.
Reviewed-by: kvn, never, jrose

6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
6889757: G1: enable card mark elision for initializing writes from compiled code (ReduceInitialCardMarks)
Summary: Defer the (compiler-elided) card-mark upon a slow-path allocation until after the store and before the next subsequent safepoint; G1 now answers yes to can_elide_tlab_write_barriers().
Reviewed-by: jcoomes, kvn, never

6827605: new String intrinsics may prevent EA scalar replacement
6875866: Intrinsic for String.indexOf() is broken on x86 with SSE4.2
Summary: Modify String intrinsic methods to pass char[] pointers instead of string oops.
Reviewed-by: never

6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
Summary: Removed second CheckCastPP and use MembarCPUOrder after arraycopy to cloned object.
Reviewed-by: never

6875577: CTW fails with /hotspot/src/share/vm/opto/memnode.cpp
Summary: Fix do_null_check to check for unloaded klass for all oop pointers.
Reviewed-by: never, cfang

6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
Summary: Improvement on reexecute implementation to fix the assertion failure
Reviewed-by: kvn, never

6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
Summary: developed a reexecute logic for the interpreter to reexecute the bytecode when deopt happens
Reviewed-by: kvn, never, jrose, twisti

Merge

6860920: serialize.cpp shouldn't use objArrayOopDesc::base_offset_in_bytes(T_BYTE)
Summary: serialize.cpp currently uses objArrayOopDesc::base_offset_in_bytes(T_BYTE), which seems to be wrong.
Reviewed-by: coleenp, kvn

6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
Summary: remove useless lazy evaluation of intrinsics; add LAST_COMPILER_INLINE to help categorize them
Reviewed-by: kvn

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

6857661: 64-bit server VM: assert(is_Initialize(),"invalid node class")
Summary: Move the secondary raw memory barrier to the correct place in generate_arraycopy().
Reviewed-by: never

6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
Summary: Put missed reference to allocated array in copyOf() intrinsic into OopMap for the call slow_arraycopy().
Reviewed-by: never

6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
Reviewed-by: kvn

6818666: G1: Type lost in g1 pre-barrier
Reviewed-by: kvn

6772683: Thread.isInterrupted() fails to return true on multiprocessor PC
Summary: Set the control edge for the field _interrupted load in inline_native_isInterrupted().
Reviewed-by: never

6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
Summary: These methods can be instrinsified by using bit scan, bit test, and population count instructions.
Reviewed-by: kvn, never

6589834: deoptimization problem with -XX:+DeoptimizeALot
Summary: Relocate the stack pointer adjustment to where uncommon_trap is actually inserted for new_array.
Reviewed-by: kvn, jrose

6761600: Use sse 4.2 in intrinsics
Summary: Use SSE 4.2 in intrinsics for String.{compareTo/equals/indexOf} and Arrays.equals.
Reviewed-by: kvn, never, jrose

6378821: bitCount() should use POPC on SPARC processors and AMD+10h
Summary: bitCount() should use POPC on SPARC processors where POPC is implemented directly in hardware.
Reviewed-by: kvn, never

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

6462850: generate biased locking code in C2 ideal graph
Summary: Inline biased locking code in C2 ideal graph during macro nodes expansion
Reviewed-by: never

Merge

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

6709972: runThese failed with assert(false,"bad AD file")
Summary: guard AryEqNode construction with has_match_rule() test, set SpecialArraysEquals default off
Reviewed-by: kvn, never

6695049: (coll) Create an x86 intrinsic for Arrays.equals
Summary: Intrinsify java/util/Arrays.equals(char[], char[])
Reviewed-by: kvn, 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

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

6667581: Don't generate initialization (by 0) code for arrays with size 0
Summary: generate_arraycopy() does not check the size of allocated array.
Reviewed-by: jrose, never

6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
Summary: T_ADDRESS size is defined as 'int' size (4 bytes) but C2 use it for raw pointers and as memory type for StoreP and LoadP nodes.
Reviewed-by: jrose

Initial load