Encoding
From Mill Computing Wiki
The Mill architecure employ a unique split stream instruction encoding that through being wide issue and very dense enables sustained decoding rates of over 30 operations per cycle. And it provides those unparalleled numbers, it does so at the fraction of the energy and transistor cost of mainstream variable instruction length instruction sets like x46.
Semantics
Extended Basic Block
Code on the Mill is organised into EBBs, i.e. batches of code with one entry point and one or more exit points.