it *is* useful...because it's a 128-bit atomic op. SVP64 doesn't
convert 64-bit ops into 128-bit atomic ops so therefore can't be
used to replace lq.
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
+Likewise, Load/Store Multiple make no sense to
have because they are not only provided by SV, the SV alternatives may
be predicated as well, making them far better suited to use in function
calls and context-switching.