8209783: AArch64: Combine Multiply and Neg operations in C2 Summary: Generate mneg instructions for a*(-b) or (-a)*b to save one instruction Reviewed-by: adinn Contributed-by: pengfei.li@arm.com

8209686: cleanup arguments to PhaseIdealLoop() constructor Reviewed-by: thartmann, kvn, pliden

8209839: [Backout] Backout JDK-8206467 Refactor G1ParallelCleaningTask into shared Reviewed-by: zgu

8209667: Explicit barriers for C1/LIR Reviewed-by: eosterlund, roland

8208172: SIGSEGV when owner of invokedynamic bootstrap method throws an exception - Symbol::increment_refcount()+0x0 Summary: table for resolution errors always expect non-null message string. Reviewed-by: dholmes, iklam

8208601: Introduce native oop barriers in C2 for OopHandle Reviewed-by: neliasso, kvn

8209801: Rename C1_WRITE_ACCESS and C1_READ_ACCESS decorators to ACCESS_READ and ACCESS_WRITE Reviewed-by: kbarrett, pliden

8209684: Intrinsics that assume some input non null should use GraphKit::must_be_not_null() Reviewed-by: kvn, thartmann

8209420: Track membars for volatile accesses so they can be properly optimized Reviewed-by: adinn, aph, thartmann

8209829: SpnegoUnknownMech.java does not contain the SpnegoUnknownMech class Reviewed-by: dholmes

8209826: Undefined reference to os::write after JDK-8209657 (filemap.hpp cleanup) Summary: include os_inline.hpp instead Reviewed-by: jiangli

8186186: GSSContext.isEstablished() can return true on error state Reviewed-by: weijun Contributed-by: weijun.wang@oracle.com