Reviewed-by: stefank, jmasa

Summary: Revamp of the mechanism that chooses old regions for inclusion in the CSet. It simplifies the code and introduces min and max bounds on the number of old regions added to the CSet at each mixed GC to avoid pathological cases. It also ensures that when we do a mixed GC we'll always find old regions to add to the CSet (i.e., it eliminates the case where a mixed GC will collect no old regions which can happen today).
Reviewed-by: johnc, brutisso

Summary: Replace calls to os::javaTimeMillis() that are used to update the milliseconds since the last GC to an equivalent that uses a monotonically non-decreasing time source.
Reviewed-by: ysr, jmasa

Summary: If we try to schedule an initial-mark GC in order to explicit start a conc mark cycle and it gets pre-empted by antoher GC, we should retry the attempt as long as it's appropriate for the GC cause.
Reviewed-by: brutisso, johnc

Summary: Prunes scavenge roots in code list every young GC, promote objects directly pointed by the code immediately
Reviewed-by: johnc, jcoomes

Reviewed-by: phh, jmasa

Reviewed-by: kvn

Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa

Summary: too optimistic inlining decision confuses local value numbering.
Reviewed-by: never

Reviewed-by: never

Summary: Use unknown_obj instead of empty_map for NULL or Constant Pool object constants in bytecode Escape Analyzer.
Reviewed-by: iveresov, never

Summary: 7u4 new experimental flag -XX:PredictedClassLoadedCount=#
Reviewed-by: dholmes, phh, dcubed

Summary: Fix pure c2 builds
Reviewed-by: kvn, brutisso, never

Summary: Add define of INCLUDE_TRACE
Reviewed-by: sla, kamg

Summary: Changed "return false" to "return NULL"
Reviewed-by: dholmes, rottenha
Contributed-by: dbhole@redhat.com

Reviewed-by: kvn, iveresov, dholmes

Summary: Temporarily disabled multi-threaded reference discovery when entering a single-threaded remark phase.
Reviewed-by: brutisso, tonyp, jmasa, jcoomes

Summary: Changed to the correct annotation arrays
Reviewed-by: kamg, dholmes, sla

Summary: Add CriticalPriority == MaxPriority+1 and enable scheduling class as well as thread priority to change on Solaris.
Reviewed-by: dholmes, dcubed

Summary: Some minor profile based optimizations. Reduce the number of branches and branch mispredicts by removing some virtual calls, through closure specalization, and refactoring some conditional statements.
Reviewed-by: brutisso, tonyp

Summary: Make sure that CompilationPolicy::event() doesn't throw exceptions
Reviewed-by: kvn, never

Summary: improvements of TraceMethodHandles for JSR292
Reviewed-by: never, twisti

Summary: handle not loaded array klass in Parse::do_checkcast().
Reviewed-by: kvn, never

Summary: disable UseAdaptiveSizePolicy with the CMS and ParNew
Reviewed-by: johnc, brutisso

Reviewed-by: dholmes, dcubed

Summary: Re-enable survivors during the initial-mark pause. Afterwards, the concurrent marking threads have to scan them and mark everything reachable from them. The next GC will have to wait for the survivors to be scanned.
Reviewed-by: brutisso, johnc

Summary: Added dcmd to unlock or check status of UnlockingCommercialFeature flag
Reviewed-by: fparain, rottenha

Summary: Block::schedule_local() may write beyond end of ready_cnt array
Reviewed-by: never, kvn

Summary: Use !higher_equal() check to skip top and values which fit.
Reviewed-by: never

Summary: Change the value of Tier3BackEdgeThreshold from 7000 to 60000
Reviewed-by: kvn, never

Summary: Make GCStatInfo a resource object
Reviewed-by: phh, coleenp

Summary: improvements of frame_describe
Reviewed-by: never, twisti

Reviewed-by: kamg, phh, dsamersoff
Contributed-by: NRickard Backman <rickard.backman@oracle.com>

Reviewed-by: kvn, iveresov

Summary: reset jvmtithreadstate exception state after frame pop and forceearlyreturn processed
Reviewed-by: minqi, dholmes, dlong
Contributed-by: bill.pittore@oracle.com

Summary: Pass correct type to branch in LIRGenerator::do_SwitchRanges()
Reviewed-by: kvn, never

Summary: Add Value() methods to short and byte Load nodes to truncate constants which does not fit.
Reviewed-by: jrose

Reviewed-by: dholmes, bdelsart, kvn, twisti

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

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