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>

8179882: C2: Stale control info after cast node elimination during loop optimization pass
Reviewed-by: kvn, roland

8166742: SIGFPE in C2 Loop IV elimination
Reviewed-by: kvn

8161147: jvm crashes when -XX:+UseCountedLoopSafepoints is enabled
Summary: don't convert loop with safepoint on the backedge to Counted loop
Reviewed-by: kvn

8159715: Fix for 8072422 is incorrect
Summary: Fixed several issues introduced by 8072422.
Reviewed-by: zmajo, kvn

8153998: Masked vector post loops
Summary: Masked vectorization for post loops to execute in a single iteration in place of fixup scalar loops which used to take many iterations to complete work for user loops.
Reviewed-by: twisti, kvn

Merge

8151573: Multiversioning for range check elimination
Summary: range check elimination in post loops
Reviewed-by: kvn

8072422: Cleanup: Remove some unused flags/code in loop optimizations
Summary: Remove unused flags, change test using them.
Reviewed-by: kvn, twisti

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

8148754: C2 loop unrolling fails due to unexpected graph shape
Summary: Check if graph shape is appropriate for optimization, bail out optimization if not.
Reviewed-by: kvn, twisti, shade, dnsimon

8147645: get_ctrl_no_update() code is wrong
Summary: Array.fill intrinsification code doesn't mark replaced control as dead
Reviewed-by: kvn

8146629: Make phase->is_IterGVN() accessible from Node::Identity and Node::Value
Summary: Change arguments of Node::Identity() and Node::Value() from PhaseTransform* to PhaseGVN*.
Reviewed-by: kvn, roland

8145322: Code generated from unsafe loops can be slightly improved
Summary: improve code generated from checkIndex and unsafe loops
Reviewed-by: kvn, thartmann

8144487: PhaseIdealLoop::build_and_optimize() must restore major_progress flag if skip_loop_opts is true
Summary: Restore the major_progress flag before calling igvn.optimize().
Reviewed-by: kvn

8144935: C2: safepoint is pruned from a non-counted loop
Reviewed-by: roland

6869327: Add new C2 flag to keep safepoints in counted loops.
Reviewed-by: kvn, shade

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

8140424: don't prefix developer and notproduct flag variables with CONST_ in product builds
Reviewed-by: goetz, stefank

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>

8135252: IdealLoopTree::dump_head() prints negative trip count
Summary: IdealLoopTree::dump_head() should not cast float to int.
Reviewed-by: kvn

8080289: Intermediate writes in a loop not eliminated by optimizer
Summary: Move Stores out of loop (after or before) when possible
Reviewed-by: kvn, vlivanov

8011858: Use Compile::live_nodes() instead of Compile::unique() in appropriate places
Reviewed-by: kvn, vlivanov
Contributed-by: vlad.ureche@gmail.com

8085932: Fixing bugs in detecting memory alignments in SuperWord
Reviewed-by: kvn
Contributed-by: jan.civlin@intel.com

8129920: Vectorized loop unrolling
Summary: optimize loop opts for vectorizible loops.
Reviewed-by: kvn, roland

8080325: SuperWord loop unrolling analysis
Summary: Determine loop unroll factor based on supported vectors sizes.
Reviewed-by: roland, kvn

8076284: Improve vectorization of parallel streams
Summary: Improve vectorization of java/util/stream/Streams$RangeIntSpliterator::forEachRemaining() method and enable loop vectorization in a given method on demand.
Reviewed-by: kvn
Contributed-by: jan.civlin@intel.com

8072753: Nondeterministic wrong answer on arithmetic
Summary: Check for overflow when inverting the loop during the counted loop conversion
Reviewed-by: kvn

8067338: compiler/debug/TraceIterativeGVN.java segfaults
Reviewed-by: kvn

8040213: C2 does not put all modified nodes on IGVN worklist
Summary: Verification code is added that checks if modified nodes are put on the IGVN worklist and modified nodes are processed by 'PhaseIterGVN::transform_old()'
Reviewed-by: kvn, jrose

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

8037816: Fix for 8036122 breaks build with Xcode5/clang
Summary: Repaired or selectively disabled offending formats; future-proofed with additional checking
Reviewed-by: kvn, jrose, stefank

8039298: assert(base == NULL || t_adr->isa_rawptr() || !phase->type(base)->higher_equal(TypePtr::NULL_PTR))
Summary: Convert the assert into the runtime check to skip IGVN optimizations for problematic memory nodes. Eliminate dead nodes more aggressively.
Reviewed-by: twisti, iveresov

8039050: Crash in C2 compiler at Node::rematerialize
Summary: Added missing calls to record_for_igvn() in loop opts. Added verification of def-use domination.
Reviewed-by: iveresov

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

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

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>

8004640: C2 assert failure in memnode.cpp: NULL+offs not RAW address
Summary: always transform AddP nodes in IdealKit by calling _gvn.transform().
Reviewed-by: roland, twisti

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

8000313: C2 should use jlong for 64bit values
Summary: Replace all occurrences of long with jlong in C2 code.
Reviewed-by: kvn, twisti

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

7160161: Missed safepoint in non-Counted loop
Summary: Do not remove safepoints during peeling optimization.
Reviewed-by: twisti

6340864: Implement vectorization optimizations in hotspot-server
Summary: Added asm encoding and mach nodes for vector arithmetic instructions on x86.
Reviewed-by: roland

7119644: Increase superword's vector size up to 256 bits
Summary: Increase vector size up to 256-bits for YMM AVX registers on x86.
Reviewed-by: never, twisti, roland

7173340: C2: code cleanup: use PhaseIterGVN::replace_edge(Node*, int, Node*) where applicable
Summary: replace frequent C2 optimizer code patterns with new methods calls
Reviewed-by: kvn, twisti
Contributed-by: vladimir.x.ivanov@oracle.com

7140882: Don't return booleans from methods returning pointers
Summary: Changed "return false" to "return NULL"
Reviewed-by: dholmes, rottenha
Contributed-by: dbhole@redhat.com

7064302: JDK7 build 147 crashed after testing my java 6-compiled web app
Summary: Don't split CMove node if it's control edge is different from split region.
Reviewed-by: never

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

7110586: C2 generates incorrect results
Summary: Exact limit of empty loop calculated incorrectly.
Reviewed-by: iveresov, never

7107042: assert(no_dead_loop) failed: dead loop detected
Summary: Use dead nodes elimination code in PhaseIdealLoop before executing EA.
Reviewed-by: never, twisti

7035946: Up to 15% regression on JDK 7 b136 vs b135 on specjvm2008.crypto.rsa on x64
Summary: Revert changes which caused regression.
Reviewed-by: never

7077439: Possible reference through NULL in loopPredicate.cpp:726
Summary: Use cl->is_valid_counted_loop() check.
Reviewed-by: never

7068051: SIGSEGV in PhaseIdealLoop::build_loop_late_post
Summary: Removed predicate cloning from loop peeling optimization and from split fall-in paths.
Reviewed-by: never

7052494: Eclipse test fails on JDK 7 b142
Summary: Keep 'ne' test in Counted loop when we can't guarantee during compilation that init < limit.
Reviewed-by: never

5091921: Sign flip issues in loop optimizer
Summary: Fix integer overflow problem in the code generated by loop optimizer.
Reviewed-by: never

7004555: Add new policy for one iteration loops
Summary: Add new policy for one iteration loops (mostly formal pre- loops).
Reviewed-by: never

7004535: Clone loop predicate during loop unswitch
Summary: Clone loop predicate for clonned loops
Reviewed-by: never

7024475: loop doesn't terminate when compiled
Reviewed-by: kvn

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

7017240: C2: native memory leak in nsk/regression/b4675027 on windows-x86 in comp mode with G1
Summary: Add ResourceMark into PhaseIdealLoop::build_and_optimize().
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

4809552: Optimize Arrays.fill(...)
Reviewed-by: kvn

6677629: PhaseIterGVN::subsume_node() should call hash_delete() and add_users_to_worklist()
Summary: Use replace_node() method instead of subsume_node().
Reviewed-by: jrose, never

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

6894779: Loop Predication for Loop Optimizer in C2
Summary: Loop predication implementation
Reviewed-by: never, kvn

6901572: JVM 1.6.16 crash on loops: assert(has_node(i),"")
Summary: Skip the secondary induction variable handling if it is dead
Reviewed-by: never, kvn

6862956: PhaseIdealLoop should have a CFG verification mode
Reviewed-by: kvn, twisti

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

Merge

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

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

6796746: rename LoadC (char) opcode class to LoadUS (unsigned short)
Summary: Renaming LoadC to LoadUS would round up the planned introduction of LoadUB and LoadUI.
Reviewed-by: phh, kvn

6384206: Phis which are later unneeded are impairing our ability to inline based on static types
Reviewed-by: rasbold, jrose

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

Merge

6718676: putback for 6604014 is incomplete
Reviewed-by: kvn, jrose

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

6695049: (coll) Create an x86 intrinsic for Arrays.equals
Summary: Intrinsify java/util/Arrays.equals(char[], char[])
Reviewed-by: kvn, never

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

6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
Reviewed-by: kvn, rasbold

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