If combined with Vertical-First then much more complex operations may exploit
REMAP Schedules, such as Complex Number FFTs, by using Scalar intermediary
-temporary registers to compute results that have a Vector destination.
+temporary registers to compute results that have a Vector source
+or destination or both.
Contrast this with a Standard Horizontal-First Vector ISA where the only
way to perform Vectorised Complex Arithmetic would be to add Complex Vector
Arithmetic operations.