Remember we are talking about _building_, actually JITing a JIT using a dynamic language _for_ a dynamic language.
I haven't run a 32 bit desktop or server system since 2004. 32 bit is quite dead. In 4 years, only the cheapest ARM SoCs will be 32 bits. In embedded devices, yes 32 bits will be around for a great long while.
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Remember we are talking about _building_, actually JITing a JIT using a dynamic language _for_ a dynamic language.
I haven't run a 32 bit desktop or server system since 2004. 32 bit is quite dead. In 4 years, only the cheapest ARM SoCs will be 32 bits. In embedded devices, yes 32 bits will be around for a great long while.