VIOTA.M

Vector Iota

VIOTA.M vd, vs2, vm

Writes the index of the active element to the destination. Useful for parallel prefix sums.

Writes to each element of vd the sum of set mask bits in vs2 at positions less than the current element index.

count = 0; foreach(i < vl): if vm[i]: vd[i] = count++;

VIOTA.M v1, v4, v0.t

Binary Layout

010100

31:26

vs2

24:20

10000

19:15

010

14:12

11:7

1010111

6:0

Format OPMVV

Opcode 0x57

Extension V