| 19 | RT | RA | | XO[0:4] | XO[5:9] |Rc| XL-Form |
| 19 | RT | RA |imm | imm // vs ms | NNNNN |Rc| setvl |
+Note that imm spans 7 bits (16 to 22)
+
Note that setmvli is a pseudo-op, based on RA/RT=0, and setvli likewise
* setvli VL=8 : setvl r5, r0, VL=8