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

Summary: Fixed stack walking code in sparc to start frame walk from last_java_sp.
Reviewed-by: sgoldman

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: Change Hotspot version and build number for opening of HS14
Reviewed-by: jcoomes

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

Reviewed-by: sspitsyn

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

Reviewed-by: kvn