6614036: REGRESSION: Java server x86 VM intermittently crash with SIGSEGV (0xb) Summary: restore destination address in x86 32-bit checkcast_arraycopy stub Reviewed-by: jrose, kvn, never

6621621: HashMap front cache should be enabled only with AggressiveOpts Reviewed-by: sbohne, xlu

6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long) Reviewed-by: kvn, rasbold

6664627: Merge changes made only in hotspot 11 forward to jdk 7 Reviewed-by: jcoomes

6673975: Disable ZapUnusedHeapArea to reduce GC execution times of debug JVM's. Summary: Mangling the unused space is having an adverse affect on testing with fastdebug builds so turn it off by default. Reviewed-by: ysr, tonyp

Merge

6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO Summary: Default values set by cms ergonomics are set with FLAG_SET_DEFAULT so down stream the values look like the default values and affect how later parameters are set. Set these values with FLAG_SET_ERGO instead and adjust how later parameters are interpreted. Reviewed-by: iveresov, apetrusenko, pbk, ysr

6668743: CMS: Consolidate block statistics reporting code Summary: Reduce the amount of related code replication and improve pretty printing. Reviewed-by: jmasa

6621728: Heap inspection should not crash in the face of C-heap exhaustion Summary: Deal more gracefully with situations where C-heap scratch space cannot be had Reviewed-by: jmasa

6362677: Change parallel GC collector default number of parallel GC threads. Summary: Use the same default number of GC threads as used by ParNewGC and ConcMarkSweepGC (i.e., the 5/8th rule). Reviewed-by: ysr, tonyp