6667618: disable LoadL->ConvL2I ==> LoadI optimization Summary: this optimization causes problems (sizes of Load and Store nodes do not match) for objects initialization code and Escape Analysis Reviewed-by: jrose, never

6667588: Don't generate duplicated CMP for float/double values Summary: float CMove generation add duplicated CMPF if there are more then one Move depending on the condition. Reviewed-by: jrose, never, rasbold

6667581: Don't generate initialization (by 0) code for arrays with size 0 Summary: generate_arraycopy() does not check the size of allocated array. Reviewed-by: jrose, never

6667580: Optimize CmpP for allocations Summary: CmpP could be optimized out if it compares new allocated objects. Reviewed-by: jrose, never, rasbold

6667573: Use set_req_X() in AddPNode::Ideal() for Iterative GVN Summary: set_req_X() puts dependent nodes on IGVN worklist which allows to improve graph and gives more opportunities for EA scalar replacement. Reviewed-by: jrose, never

6590177: jck60019 test assert(!repeated,"do not walk merges twice") Summary: A mergemem node could be not in worklist_store but in should_not_repeat vectorset since it was processed and removed from worklist_store before. Reviewed-by: jrose, never

6610906: inexplicable IncompatibleClassChangeError Summary: dependency check must treat polymorphic interfaces consistently Reviewed-by: kvn, never, sgoldman

6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM Summary: T_ADDRESS size is defined as 'int' size (4 bytes) but C2 use it for raw pointers and as memory type for StoreP and LoadP nodes. Reviewed-by: jrose

6650373: Assert in methodOopDesc::make_adapters() Summary: AdapterHandlerLibrary::get_create_adapter_index() returns incorrect value (-2) when CodeCache is full. Reviewed-by: sgoldman

6498878: client compiler crashes on windows when dealing with breakpoint instructions Summary: _is_compilable check prevents breakpoint bytecodes reversion when loading bytecodes for ciMethod. Reviewed-by: never

6621084: ciMethodBlocks::split_block_at() is broken for methods with exception handler Summary: After an exception handler block is split the exception information is not moved to the new block which starts in exception handler BCI. Reviewed-by: jrose

6621094: PrintOptoAssembly is broken for oops information in DebugInfo Summary: OopMapValue and VMRegImpl classes miss the virtual method print_on(st). Reviewed-by: rasbold, jrose, never

6614330: Node::dump(n) does not print full graph for specified depth. Summary: A node is not processed in dump_nodes() if it was visited during processing previous inputs. Reviewed-by: rasbold

6621098: "* HeapWordSize" for TrackedInitializationLimit is missing Summary: '* HeapWordSize' is missing in GraphKit::set_output_for_allocation() Reviewed-by: rasbold, jrose, never

6646946: Kernel installation failed on Japanese and Chinese XP SP2 (VM part) Summary: convert strings from Download Manager into native encoding in the VM Reviewed-by: sbohne, never, phh, kamg, xlu

6635560: segv in reference processor on t1000 Summary: Revert back to using the default page size for the card table Reviewed-by: pbk, phh

6629887: 64-bit windows should not restrict default heap size to 1400m Reviewed-by: jmasa, sbohne, ikrylov, xlu

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

6642634: Test nsk/regression/b6186200 crashed with SIGSEGV Summary: Use correct allocation path in expand_and_allocate() so object's mark and p-bits are set as appropriate. Reviewed-by: jmasa, pbk

6665445: Backout change to CardTableModRefBS::resize_covered_region() Summary: Backed out part of cahnge for 6624765 because of nightly testing regressions. Reviewers below were for 6624765. Reviewed-by: ysr, apetrusenko

6621144: CMS: assertion failure "is_cms_thread == Thread::current()->is_ConcurrentGC_thread()" Summary: Take lock conditionally (in asynchronous mode only) when updating the dead-object map. Reviewed-by: jmasa

6624765: Guarantee failure "Unexpected dirty card found" Summary: In verification take into account partial coverage of a region by a card and expansion of the card table. Reviewed-by: ysr, apetrusenko

6659981: +ParallelRefProcEnabled crashes on single core platform Summary: Disable parallel reference processing when there are no worker threads Reviewed-by: apetrusenko, pbk, jmasa, tonyp