Merge

7037276: Unnecessary double traversal of dirty card windows Summary: Short-circuited an unnecessary double traversal of dirty card windows when iterating younger refs. Also renamed some cardtable methods for more clarity. Reviewed-by: jmasa, stefank, poonam

7034464: Support transparent large pages on Linux Summary: Support transparent huge pages on Linux available since 2.6.38 Reviewed-by: iveresov, ysr Contributed-by: aph@redhat.com

7011855: G1: non-product flag to artificially grow the heap Summary: It introduces non-product cmd line parameter G1DummyRegionsPerGC which indicates how many "dummy" regions to allocate at the end of each GC. This allows the G1 heap to grow artificially and makes concurrent marking cycles more frequent irrespective of what the application that is running is doing. The dummy regions will be found totally empty during cleanup so this parameter can also be used to stress the concurrent cleanup operation. Reviewed-by: brutisso, johnc

Merge

7032162: assert(flat != TypePtr::BOTTOM) failed: cannot alias-analyze an untyped ptr Reviewed-by: kvn

7029167: add support for conditional card marks Reviewed-by: iveresov, kvn

7039586: test/java/util/Collections/Rotate.java failing with hs21-b09 Summary: A predicate should not be moved in partial peel optimization since it will invalidate jvm state of its uncommon trap. Reviewed-by: never

7030715: JSR 292 JRuby test/test_super_call_site_caching.rb asserts with +DoEscapeAnalysis Reviewed-by: twisti

6993078: JSR 292 too many pushes: Lesp points into register window Reviewed-by: kvn, never