@ CHECK: qsub8le r1, r2, r3 @ encoding: [0xc2,0xfa,0x13,0xf1]
+@------------------------------------------------------------------------------
+@ RBIT
+@------------------------------------------------------------------------------
+ rbit r1, r2
+ it ne
+ rbitne r1, r2
+
+@ CHECK: rbit r1, r2 @ encoding: [0x92,0xfa,0xa2,0xf1]
+@ CHECK: it ne @ encoding: [0x18,0xbf]
+@ CHECK: rbitne r1, r2 @ encoding: [0x92,0xfa,0xa2,0xf1]
+
+
@------------------------------------------------------------------------------
@ SUB (register)
@------------------------------------------------------------------------------