8071811: gc/arguments/TestG1ConcRefinementThreads.java failed on Exception: java.lang.RuntimeException: Actual G1ConcRefinementThreads(0) is not equal to expected value(23) Reviewed-by: jwilhelm, iignatyev

8072693: [BACKOUT] GCCause should distinguish jcmd GC.run from System.gc() Reviewed-by: jwilhelm, tschatzl

Merge

8071821: Assert failed in UnexpectedDeoptimizationTest.java Summary: assert fires in case of concurrent initialization of ciInstanceKlass::_has_injected_fields Reviewed-by: kvn

8072016: Array copy may cause infinite cycle of deoptimization/compilation Summary: Infinite deoptimization/recompilation cycles in case of arraycopy with tightly coupled allocation Reviewed-by: kvn, vlivanov

8071999: SA's buildreplayjars fail with exception Summary: support default methods when dumping classes in SA Reviewed-by: vlivanov, kvn, dsamersoff

8071533: assert(n0->is_Call()) failed: expect a call here Summary: remove_dead_region() call missing from ArrayCopyNode::Ideal() Reviewed-by: kvn, vlivanov

8068003: compiler/whitebox/DeoptimizeFramesTest.java fails: compilation 48 can't be available Summary: disabled DeoptimizeALot for test runs Reviewed-by: kvn

8072398: assert fails in L1RGenerator::increment_event_counter_impl Summary: Change scaling code to allow scaling with 0.0; change set_tiered_flags() to treat CompileThresholdScaling==0.0 in a special way. Reviewed-by: kvn, iveresov

8071996: split_if accesses NULL region of ConstraintCast Reviewed-by: kvn

Merge

8068440: Test6857159.java times out Summary: Replace shell script with Java-only code Reviewed-by: kvn, iignatyev