8158232: PPC64: improve byte, int and long array copy stubs by using VSX instructions Reviewed-by: goetz, mdoerr Contributed-by: Michihiro Horie <horie@jp.ibm.com>

8157726: VarHandles/Unsafe should support sub-word atomic ops Reviewed-by: psandoz, vlivanov, lagergren

8159244: Partially initialized string object created by C2's string concat optimization may escape Summary: Emit release barrier after String creation to prevent partially initialized object from escaping. Reviewed-by: kvn

8158360: C1: SEGV in generated code Summary: update test to store Object fields Reviewed-by: kvn

8159282: quarantine compiler/jvmci/compilerToVM/ReprofileTest.java Reviewed-by: iignatyev

Merge

8160088: update hotspot tests depending on GC to use @requires vm.gc.X Reviewed-by: iignatyev, mchernov, dholmes

8160102: Typo in message for NULL memory size arguments in diagnosticArgument.cpp Reviewed-by: dholmes, rehn

Merge

8157758: JDK9 does not compile on Linux with GCC 6.1 because left-shifting a negative number has undefined behavior Summary: Replace shifts of -1 with shifts of ~0u. Reviewed-by: kbarrett, mockner Contributed-by: alexhenrie24@gmail.com

8160189: Fix for 8159335 breaks AArch64 Reviewed-by: kvn

8155099: Remove duplicate comments from G1Policy Reviewed-by: jmasa, drwhite

Merge

8152438: Threads may do significant work out of the non-shared overflow buffer Summary: Before processing an element in the non-shared overflow buffer, try to push it into the local shared buffer to keep it full. Reviewed-by: jmasa, ehelin, sjohanss

8159370: Add FlagGuard for easier modification of flags for unit tests Reviewed-by: kbarrett, jwilhelm

8153743: AllocateHeap() and ReallocateHeap() should use ALWAYSINLINE macro Reviewed-by: dholmes, zgu

8155949: Support relaxed semantics in cmpxchg Reviewed-by: dholmes, kbarrett, goetz, aph Contributed-by: horii@jp.ibm.com, martin.doerr@sap.com

8151283: Implement setting jtreg @requires property vm.isG1Supported. Reviewed-by: tschatzl, iignatyev, mchernov

8159590: Remove deprecated methods from jdk.internal.misc.VM Reviewed-by: chegar, dholmes

8155730: HeapInfoDCmd should get Heap_lock Reviewed-by: tschatzl, jprovino

8159666: Better CDS support for Event-based tracing Reviewed-by: jiangli, mgronlun

Merge

8159470: Error message for ICCE for MethodHandle constant pool not helpful Summary: Reworded message and added test. Reviewed-by: hseigel, gtriantafill, dholmes

8157592: StackTraceLogging fails with stack overflow on 32-bit Windows Reviewed-by: coleenp, dholmes, jiangli

8159366: Header guards missing for unittest.hpp Reviewed-by: jwilhelm, stefank, pliden

8159365: assert is not defined for unit tests Reviewed-by: jwilhelm, coleenp

8159364: Gtest unit tests does not support PCH Reviewed-by: erikj, jwilhelm, gtriantafill

8159340: Add extension to CompileGtest.gmk Reviewed-by: dholmes, gtriantafill, jwilhelm