Summary: Add the events bits to the early events bits
Reviewed-by: dholmes, dsamersoff

Summary: The high byte of a long variable on a 64-bit platform is now zeroed when it is pushed to stack.
Reviewed-by: coleenp, dlong

8164948: Initializing stores of HeapRegions are not ordered with regards to their use in G1ConcurrentMark
Summary: Add a storestore barrier before publishing newly initialized HeapRegion instances, and place a loadload barrier before use of members.
Reviewed-by: sjohanss, sangheki

Summary: Transitions to Java clear the pending pointer
Reviewed-by: dholmes, neliasso, coleenp

Reviewed-by: dholmes, dsamersoff, egahlin

Reviewed-by: hseigel

Reviewed-by: tschatzl, mgerdin

Reviewed-by: egahlin, tschatzl

8165313: Inserting freed regions during Free Collection Set serial phase takes very long on huge heaps
Summary: Sort the collection set in ascending order so that the optimization when adding free regions can be exploited.
Reviewed-by: sjohanss, mgerdin