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MoarVM has had a JIT since 2014. (MoarVM was announced in January 2014, got a type specializer in March of that year and got the beginnings of a JIT in August of that year)

What it just got recently is a pluggable specializer that allows more interesting optimizations to be written in a higher level language (NQP). Since this is closer to Perl 6 than the VM it has more information with which to decide how to optimize code. (Note that it also means you can do the same with any other language that runs on MoarVM, even if it is very different from Perl 6)

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