**Horizontal Parallelism Hint**
`SVSTATE.hphint` declares to hardware that groups of elements up to this
-size are 100% independent. With Reduction literally creating Dependency
+size are 100% independent (free of all Hazards inter-element but not inter-group).
+With Reduction literally creating Dependency
Hazards on every element-level sub-instruction it is pretty clear that setting
`hphint` *at all* would cause data corruption. However `sv.add *r0, *r4, *r0`
for example clearly leaves room for four parallel elements. Programmers must