4957990: Perm heap bloat in JVM Summary: Treat ProfileData in MDO's as a source of weak, not strong, roots. Fixes the bug for stop-world collection -- the case of concurrent collection will be fixed separately. Reviewed-by: jcoomes, jmasa, kvn, never

6841313: G1: dirty cards of survivor regions in parallel Reviewed-by: tonyp, iveresov

6845368: large objects cause a crash or unexpected exception Reviewed-by: jmasa, iveresov

6861660: OopMapBlock count/size confusion Reviewed-by: tonyp, iveresov

Merge

6871111: G1: remove the concurrent overhead tracker Summary: Removing the concurrent overhead tracker from G1, along with the GC overhead reporter and the G1AccountConcurrentOverhead (both of which rely on the the concurrent overhead tracker). Reviewed-by: iveresov, johnc

6798898: CMS: bugs related to class unloading Summary: Override should_remember_klasses() and remember_klass() as needed. Reviewed-by: ysr, jcoomes

Merge

6875329: fix for 6795465 broke exception handler cloning Reviewed-by: kvn

6873800: enable compressed oops by default Summary: enable compressed oops by default Reviewed-by: never, ysr

6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit Summary: use PcDesc to keep record of the reexecute bit instead of using DebugInfoStreams Reviewed-by: kvn, never, twisti

6873799: enable escape analysis by default Summary: enable escape analysis by default Reviewed-by: never

6873777: FPU control word optimization still performed with SSE Reviewed-by: kvn

6795465: Crash in assembler_sparc.cpp with client compiler on solaris-sparc Reviewed-by: twisti, cfang

6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59) Summary: delay dead code elimination in set_req_X to make it safe Reviewed-by: kvn, never