Reviewed-by: dcubed, coleenp

Reviewed-by: jcoomes

Summary: Remove product flag -XX:CompilationRepeat
Reviewed-by: kvn, iveresov

Summary: New API for unlocking diagnostic argument.
Reviewed-by: dholmes, ccheung, egahlin, iklam, bdelsart

Summary: fixed order of DeoptReason values declaration so now it matches the order used in jdk9 and the names order in Deoptimization::_trap_reason_name.
Reviewed-by: kvn

Reviewed-by: kvn

Reviewed-by: kvn, jrose

Reviewed-by: kvn, jrose

8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
Summary: Remove -XX:-G1DeferredRSUpdate functionality as it is racy. During evacuation failure handling, threads where evacuation failure handling occurred may try to add remembered sets to regions which remembered sets are currently being scanned. The iterator to handle the remembered set scan does not support addition of entries during scan and so may skip valid references.
Reviewed-by: iveresov, brutisso, mgerdin

Reviewed-by: kvn

Summary: Marking G1 FullGC as a _full collection and passing down the correct before count.
Reviewed-by: brutisso, mgerdin

Summary: Ergonomics updates flags for number of GC threads
Reviewed-by: tschatzl, jwilhelm
Contributed-by: sangheon.kim@oracle.com

8058536: java/lang/instrument/NativeMethodPrefixAgent.java fails due to VirtualMachineError: out of space in CodeCache for method handle intrinsic
Summary: Make sure MH intrinsics can be created before compiler instances
Reviewed-by: kvn

Reviewed-by: coleenp, minqi

Summary: ClassLoader for array klass set to null and not the class loader of the component type.
Reviewed-by: dcubed, ctornqvi