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

8173195: [BACKOUT] 8087341: C2 doesn't optimize redundant memory operations with G1
Summary: Backing out 8087341 due to 8172850. Will be re-implemented with 8173196.
Reviewed-by: kvn

8158639: C2 compilation fails with SIGSEGV
Summary: fixed the jvms for callsite traps based on declared signature.
Reviewed-by: kvn, vlivanov, dlong

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

8087341: C2 doesn't optimize redundant memory operations with G1
Summary: effect of memory barrier in post barrier is too wide
Reviewed-by: kvn, aph
Contributed-by: adinn <adinn@redhat.com>

6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type
Summary: Emit CastII to make narrow ConvI2L dependent on the corresponding range check.
Reviewed-by: kvn, roland

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

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

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>

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

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

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

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

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

Merge

8072911: Remove includes of oop.inline.hpp from .hpp files
Reviewed-by: brutisso, coleenp, jwilhelm, simonis, dholmes

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

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

8057737: Avoid G1 write barriers on newly allocated objects
Reviewed-by: mgerdin, kvn, iveresov
Contributed-by: Staffan Friberg <staffan.friberg@oracle.com>

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

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

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

8031752: Failed speculative optimizations should be reattempted when root of compilation is different
Summary: support for speculative traps that keep track of the root of the compilation in which a trap occurs.
Reviewed-by: kvn, twisti

Merge

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

8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov

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

8024067: Missing replace_in_map() calls following null checks
Summary: add replace_in_map() calls following some null checks in type checks
Reviewed-by: kvn

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>

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

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

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>

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>

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

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

Merge

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

Merge

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

7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair

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

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

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

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

6902182: 4/4 Starting with jdwp agent should not incur performance penalty
Summary: Rename can_post_exceptions support to can_post_on_exceptions. Add support for should_post_on_exceptions flag to permit per JavaThread optimizations.
Reviewed-by: never, kvn, dcubed
Contributed-by: tom.deneau@amd.com

6892658: C2 should optimize some stringbuilder patterns
Reviewed-by: kvn, twisti

6877254: Server vm crashes with no branches off of store slice" when run with CMS and UseSuperWord(default)
Summary: design StoreCMNode::Ideal to promote its oopStore input if the input is a MergeMem node
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

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

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

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

6814575: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair

6442502: assert(bits,"Use TypePtr for NULL") on linux-x86
Reviewed-by: kvn

6711316: Open source the Garbage-First garbage collector
Summary: First mercurial integration of the code for the Garbage-First garbage collector.
Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr

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