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Re:IBM ported Go to s390x mainframes by fowl2 on Monday January 11, 2016 @07:42PM (#10884779)
I think he's refering to things like Apple's "bitcode".

http://lowlevelbits.org/bitcode-demystified/

Re:IBM ported Go to s390x mainframes by praseodym on Tuesday January 12, 2016 @09:02AM (#10887414)
Bitcode isn't JIT (yet); it simply allows Apple to compile binaries targeted at new devices or with newer compilers, without the developer having to do anything.