8171008: Integrate AOT compiler into JDK
Reviewed-by: erikj, mchung, psandoz, coleenp, iklam, stefank, simonis
Contributed-by: Bharadwaj Yadavalli <bharadwaj.yadavalli@oracle.com>, Christian Thalinger <cthalinger@twitter.com>, Dean Long <dean.long@oracle.com>, Dmitrij Pochepko <dmitrij.pochepko@oracle.com>, Dmitry Chuyko <dmitry.chuyko@oracle.com>, Doug Simon <doug.simon@oracle.com>, Eric Caspole <eric.caspole@oracle.com>, Igor Ignatyev <igor.ignatyev@oracle.com>, Igor Veresov <igor.veresov@oracle.com>, John Rose <john.r.rose@oracle.com>, Morris Meyer <morris.meyer@oracle.com>, Niclas Adlertz <niclas.adlertz@oracle.com>, Rickard Backman <rickard.backman@oracle.com>

8167679: G1 phase logging is messy
Reviewed-by: sjohanss, tschatzl

8168904: Initialize and reset G1 phase times to zero
Reviewed-by: sjohanss, jprovino

8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
Summary: The call to ClassLoaderDataGraph::clear_claimed_marks() during initial mark in g1CollectedHeap.cpp:4420 is misplaced.
Reviewed-by: tschatzl, kbarrett

8034842: Parallelize the Free CSet phase in G1
Reviewed-by: jmasa, ehelin

8152952: Allow G1 phase logging to use individual number of threads
Reviewed-by: tschatzl, jmasa

8150068: Log the main G1 phases at info level
Reviewed-by: sjohanss, tschatzl

8150630: Add logging for ParScanThreadState merge phase
Summary: Improve visibility of the per-thread scan state merge phase by adding appropriate logging.
Reviewed-by: jmasa, tbenson

8076463: Add logging for the preserve CM referents task
Summary: Add logging and do minor refactoring to CM referents handling task.
Reviewed-by: jmasa

8148734: G1: Make G1GCPhaseTimes keep track of the start GC time
Reviewed-by: sjohanss, tschatzl

8145303: Clean up the units for log_gc_footer
Reviewed-by: david, tschatzl, goetz

8145092: Use Unified Logging for the GC logging
Summary: JEP-271. VM changes contributed by brutisso, test changes contributed by david.
Reviewed-by: sjohanss, david, brutisso
Contributed-by: bengt.rutisson@oracle.com, david.lindholm@oralce.com

8144145: G1GCPhaseTimes should allow externally accounted time
Reviewed-by: ehelin, tschatzl

8140509: Add note_gc_start to G1CollectorPolicy
Reviewed-by: mgerdin, tschatzl

8140508: Add utility method for logging phases to G1CollectorPolicy
Reviewed-by: mgerdin, tschatzl

8060017: G1: Report heap sizing time
Summary: Report heap expansion time done on VM thread after collection. Previously this was included in "Other" time.
Reviewed-by: mgerdin, tschatzl

8069330: Adjustment of concurrent refinement thresholds does not take hot card cache into account
Summary: Measure HCC processing time separately and remove that time from the calculation of the refinement thresholds. HCC processing time is still taken into account for general pause time predictions.
Reviewed-by: tbenson, jmasa

8079792: GC directory structure cleanup
Reviewed-by: brutisso, stefank, david