jdk-sandbox: Changelog

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

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

7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post Summary: memory slices should be always created for non-static fields after allocation Reviewed-by: never

7009346: java/dyn/InvokeDynamicPrintArgs.java fails with NPE on solaris-sparc with -Xcomp Reviewed-by: kvn, jrose, twisti

7037812: few more defaults changes for new AMD processors Summary: use PREFETCHW as default prefetch instruction, set UseXMMForArrayCopy and UseUnalignedLoadStores to true by default. Reviewed-by: kvn Contributed-by: tom.deneau@amd.com

7036960: TemplateTable::fast_aldc in templateTable_x86_64.cpp uses movptr instead of load_klass Reviewed-by: kvn, iveresov

7018355: JSR 292: VM crash in DefNewGeneration::copy_to_survivor_space Reviewed-by: kvn, jrose

7009923: JSR 292: VM crash in JavaThread::last_frame Summary: Handle stack overflow before the first frame is called, by printing out the called method and not walking the stack. Reviewed-by: dholmes, phh, dsamersoff

7035861: linux-armsflt: assert(ni->data() == (int)(x + o)) failed: instructions must match Summary: The change avoids generating relocation info entry for the staging area patching stub on systems that don't support movw/movt instructions Reviewed-by: bdelsart