Reviewed-by: never, phh, stefank, kamg, dholmes, coleenp

Reviewed-by: kvn

Reviewed-by: kvn, coleenp, twisti, stefank

Reviewed-by: kvn

7011865: JSR 292 CTW fails: !THREAD->is_Compiler_thread() failed: Can not load classes with the Compiler thre
Reviewed-by: kvn, never

Summary: This new default has shown improvement across many workloads.
Reviewed-by: kvn
Contributed-by: tom.deneau@amd.com

Summary: Use _max_num_q = max(discovery_degree, processing_degree), and let balance_queues() redistribute from discovery_degree to processing_degree of queues. This should also allow a more dynamic and flexible parallelism policy in the future.
Reviewed-by: jmasa, johnc

Summary: And out lsb which is set for symbols in constant pool slots to distinguish them from strings
Reviewed-by: phh, dholmes, never, dcubed

6627787: CMS: JVM refuses to start up with -Xms16m -Xmx16m
7000125: CMS: Anti-monotone young gen sizing with respect to maximum whole heap size specification
7027529: CMS: retire CMSUseOldDefaults flag
Summary: Simplify CMS heap sizing code, relying on ergonomic initial sizing consistent with other collectors for the most part, controlling only young gen sizing to rein in pause times. Make CMS young gen sizing default statically cpu-dependant. Remove inconsistencies wrt generation sizing and policy code, allowing for the fixing for 6627787 and 7000125. For 7027529, retire the flag CMSUseOldDefaults which had been introduced as a bridge from JDK 5 to JDK 6 a number of years ago.
Reviewed-by: brutisso, poonam

7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
Summary: Change nmethod_lock() to also prevent zombification of the nmethod. CompiledMethodUnload events also need to lock the nmethod. Clean ups in nmethod::make_not_entrant_or_zombie()
Reviewed-by: dholmes, kamg, never, dsamersoff, ysr, coleenp, acorn

Summary: Move initialization of the '_instance' field to avoid race with ServiceThread start.
Reviewed-by: dholmes, kamg, never, dsamersoff, ysr, coleenp, acorn

Summary: Count enable_icms() and disable_icms() events so as to prevent inteference between concurrent calls, which can cause the iCMS thread to be left stranded in icms_wait() with an unserviced request and no young allocations to unwedge it.
Reviewed-by: jcoomes, poonam

Summary: package and class renaming only; delete unused methods and classes
Reviewed-by: twisti

Summary: consolidate runtime support in java.dyn.MethodHandleNatives; include transitional compatibility logic
Reviewed-by: twisti

Summary: Remove _last_pc_desc and use pcdescs[0] instead.
Reviewed-by: dcubed, coleenp, ysr

Summary: add missing check this->dual() != TypeAryPtr::OOPS into TypeAryPtr::klass().
Reviewed-by: never

Summary: Check that -XX:ParGCArrayScanChunk has a value larger than zero.
Reviewed-by: johnc, jmasa, ysr

Summary: incorrect handling of c2i deoptimization on little endian architectures
Reviewed-by: never

Summary: removed an ifdef IA32 around harmless code useful for some ports
Reviewed-by: chrisphi, never

Summary: Use largest_free_block() instead of unallocated_capacity().
Reviewed-by: iveresov, never, ysr

Summary: Put symbol printing under Verbose and WizardMode so you can get this information if you really want it.
Reviewed-by: phh, stefank, never, dholmes, jcoomes

6965570: assert(!needs_patching && x->is_loaded(),"how do we know it's volatile if it's not loaded")
Reviewed-by: iveresov

Summary: arrays pointers meet must fall to bottom if exact array klasses in upper lattice are not equal or super klass is exact.
Reviewed-by: never

Reviewed-by: kvn, iveresov

Summary: This implements adaptive tiered compilation policy.
Reviewed-by: kvn, never

Summary: Update the HS21 build number to 04
Reviewed-by: jcoomes