are the sole exclusive bedrock.
2. No scalar instruction ever deviates in its encoding or meaning
just because it is prefixed (semantic caveats below)
-3. A hardware-level for-loop makes vector elements 100% synonymous
- with scalar instructions (the suffix)
+3. A hardware-level for-loop (the prefix) makes vector elements
+ 100% synonymous with scalar instructions (the suffix)
How can a Vector ISA even exist when no actual Vector instructions
are permitted to be added? It comes down to the strict RISC abstraction.