Reviewed-by: jcoomes

Reviewed-by: dholmes, bdelsart, kvn, twisti

Summary: Fix exception handler stub size, enable guarantees to check for the correct deopt and exception stub sizes in the future
Reviewed-by: kvn, never, twisti

Summary: Decoder API changes did not reflect in os_bsd
Reviewed-by: kamg, dcubed

Summary: fix for debug method frame::describe
Reviewed-by: never, kvn

Summary: Made decoder thread-safe
Reviewed-by: coleenp, kamg

Reviewed-by: jcoomes

Summary: Relax verification and locks elimination checks for new implementation (EliminateNestedLocks).
Reviewed-by: iveresov

Summary: Do not common BoxLock nodes and avoid creating phis of boxes.
Reviewed-by: never

Summary: Don't split CMove node if it's control edge is different from split region.
Reviewed-by: never

Reviewed-by: phh, bobv, coleenp, dcubed
Contributed-by: NJiangli Zhou <jiangli.zhou@oracle.com>

Summary: Added a nop tracing infrastructure, JFR makefile changes and other infrastructure used only by JFR.
Reviewed-by: acorn, sspitsyn
Contributed-by: markus.gronlund@oracle.com

Summary: Compare uncasted object nodes.
Reviewed-by: never

Summary: This change simplifies the interaction between GC and concurrent marking. By disabling survivor spaces during the initial-mark pause we don't need to propagate marks of objects we copy during each GC (since we never need to copy an explicitly marked object).
Reviewed-by: johnc, brutisso

Reviewed-by: tonyp, jmasa

Reviewed-by: brutisso, johnc

Reviewed-by: acorn, phh, dcubed, sspitsyn

Summary: Nested locks elimination done before lock nodes expansion by looking for outer locks of the same object.
Reviewed-by: never, twisti

Summary: Change yank_if_dead() to recursive method to remove all dead inputs.
Reviewed-by: never

Summary: Store the "next chunk start index" in the length field of the to-space object, instead of the from-space object, so that we can always reliably read the size of all from-space objects.
Reviewed-by: johnc, ysr, jmasa