Summary: Under certain circumstances, two cleanup threads can claim and process the same region.
Reviewed-by: apetrusenko, ysr

6652160: G1: assert(cur_used_bytes == _g1->recalculate_used(),"It should!") at g1CollectorPolicy.cpp:1425
Summary: In attempt_allocation_slow() wait for the concurrent cleanup to complete before modifying _summary_bytes_used.
Reviewed-by: jmasa, apetrusenko

6723570: G1: assertion failure: p == current_top or oop(p)->is_oop(),"p is not a block start" (revisited!)
Summary: Fixed the incorrect assigment to G1OffsetTableContigSpace::_gc_time_stamp. Also added a little more paranoia to operations on a global timestamp.
Reviewed-by: tonyp

6702387: G1: assertion failure: assert(p == current_top || oop(p)->is_oop(),"p is not a block start")
Summary: Do not coalesce dead and moved objects when removing self-forwarding pointers during the evacuation failure. Also fixed a issue in a BOT refinement code for TLABs.
Reviewed-by: tonyp, jcoomes

Summary: experimental() flags will protect features of an experimental nature that are not supported in the regular product build. Made UseG1GC an experimental flag.
Reviewed-by: jmasa, kamg, coleenp

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

Summary: Fixed the mismerge by deleting the lines that were inadvertently left in place.
Reviewed-by: iveresov

Reviewed-by: kvn, jrose

Summary: Remove DecodeNNode::decode() and EncodePNode::encode() methods.
Reviewed-by: rasbold, never

Reviewed-by: kvn, jrose

Summary: Initialize the field correctly in ContiguousSpace's constructor and initialize() methods, using the latter for the survivor spaces upon initial construction or a subsequent resizing of the young generation. Add some missing Space sub-class constructors.
Reviewed-by: apetrusenko

Summary: For small (1-3 bits) left long shifts in 32-bits VM use sets of add+addc instructions instead of shld+shl on new AMD cpus.
Reviewed-by: never
Contributed-by: shrinivas.joshi@amd.com

Summary: verify the adr_type of a mach node was not changed
Reviewed-by: rasbold, never

6714694: assertion in 64bit server vm (store->find_edge(load) != -1,"missing precedence edge") with COOPs
Summary: The method raise_LCA_above_marks() terminates LCA search early.
Reviewed-by: rasbold, never

Summary: ensure that GCTask threads release resource and handle memory
Reviewed-by: jmasa, chrisphi

Summary: Fixed the cast from char* to const char* and tried to use const char* as much as possible
Reviewed-by: never, kamg
Contributed-by: xiaobin.lu@sun.com

Summary: Add missed checks for TOP and missed checks for non-dominating cases
Reviewed-by: rasbold, jrose, never

Summary: Poke String.stringCacheEnabled during vm initialization
Reviewed-by: never

Reviewed-by: kvn

Reviewed-by: kvn

6710665: G1: guarantee(_cm->out_of_regions() && _cm->region_stack_empty() && _task_queue->size() == 0, ...)
Summary: Remove the incorrect assumptions from guarantee()s.
Reviewed-by: ysr, tonyp

Summary: Expand cardtable without committing over existing regions.
Reviewed-by: apetrusenko

Summary: Make FreeChunk read markword instead of LSB in _klass pointer to indicate that it's a FreeChunk for compressed oops.
Reviewed-by: ysr, jmasa

Summary: The fix takes care of three issues that can create a hole less a minimal object in the lgrp chunk
Reviewed-by: ysr, apetrusenko

Summary: comment out code that turns on compressed oops
Reviewed-by: never, phh

Reviewed-by: kvn, jrose, rasbold

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

6711083: 64bit JVM crashes with Internal Error (type.cpp:763) - ShouldNotReachHere() with enabled COOPs
Summary: Add NarrowOop to various xmeet routines
Reviewed-by: kvn, sgoldman, jrose, rasbold

Summary: Code in gen_subtype_check was encoding rax as an oop on a path where rax was not an oop.
Reviewed-by: never, kvn

Summary: exclude UEP size from nmethod code size and use narrow klass oop to load prototype header.
Reviewed-by: jrose, never

Reviewed-by: kvn, jrose

Summary: The assertion can failure due to race conditions.
Reviewed-by: never

Summary: guard AryEqNode construction with has_match_rule() test, set SpecialArraysEquals default off
Reviewed-by: kvn, never

Summary: Intrinsify java/util/Arrays.equals(char[], char[])
Reviewed-by: kvn, never

Summary: Generate addresses and implicit null checks with narrow oops to avoid decoding.
Reviewed-by: jrose, never

Summary: Update the copyrights
Reviewed-by: ohair

Summary: decouple set_klass() with zeroing the gap when compressed.
Reviewed-by: kvn, ysr, jrose

Summary: xsl output tag not at top level
Reviewed-by: never, kvn, rasbold
Contributed-by: gnu_andrew@member.fsf.org

Summary: Make max classfile version number dependent on JDK version
Reviewed-by: acorn, never

Summary: Use the gap also for a narrow oop field and a boxing object value.
Reviewed-by: coleenp, never