Values for mm field (bits 12:13 above):
-* mm = 00 -> use current global saturation or rounding, no mask
-* mm = 00 -> force saturation or rounding for this instruction only
-* mm = 10 -> use v1 as predicate mask
-* mm = 11 -> use ~v1 as predicate mask
+* mm = 00 -> no predicate mask, and use current global saturation / rounding settings
+* mm = 00 -> no predicate mask, and force saturation or rounding for this instruction only
+* mm = 10 -> use v1 as predicate mask, and use global saturation / rounding settings
+* mm = 11 -> use ~v1 as predicate mask, and use global saturation / rounding settings
## Register file