JIT compilation and profiler handling for native reference related operations. Various dynamic optimizer improvements, enhancing quality of produced code and decreasing overhead. Big Endian fixes for Power (32 and 64 bit), along with other porting work. Native calling enhancements. And numerous other fixes and improvements.
Short for "Metamodel On A Runtime", MoarVM is a virtual machine built especially for Rakudo Perl 6 and the NQP Compiler Toolchain. MoarVM stands out amongst the various Rakudo and NQP compilation targets by:
For long-running workloads where startup time doesn't matter and you need tried-and-tested threading support, Rakudo on the JVM may be a better bet. It may also - once the slow startup is overcome - win on performance for some workloads, once its sophisticated JIT compiler gets to work. MoarVM is under active development in these areas, and the gap will close as time goes by.