the sole exceptions potentially being any operations with 128-bit
operands such as `vrlq` (Rotate Quad Word) and `xsaddqp` (Scalar
Quad-precision Add).
-SV effectively *replaces* VSX requiring far less instructions, and provides,
-at the very minimum, predication (which VSX was designed without).
-Thus all VSX Major Opcodes - all of them - are "unused" and must raise
-illegal instruction exceptions in SV Prefix Mode.
+SV effectively *replaces* the majority of VSX, requiring far less
+instructions, and provides, at the very minimum, predication
+(which VSX was designed without).
Likewise, `lq` (Load Quad), and Load/Store Multiple make no sense to
have because they are not only provided by SV, the SV alternatives may