The other reason for not adding an SVP64-Prefixed instruction without
also having it as a Scalar un-prefixed instruction is that if the
-32-bit encoding is ever allocated to a completely unrelated operation
+32-bit encoding is ever allocated in a future revision
+of the Power ISA
+to a completely unrelated operation
then how can a Vectorised version of that new instruction ever be added?
+The uniformity and RISC Abstraction is irreparably damaged.
Bottom line here is that the fundamental RISC Principle is strictly adhered
to, even though these are Advanced 64-bit Vector instructions.
Advocates of the RISC Principle will appreciate the uniformity of