VWADD.VV

Vector Widening Integer Add

VWADD.VV vd, vs2, vs1, vm

Adds N-bit elements to produce 2*N-bit results (Widening).

Details

Performs a widening operation, producing results twice as wide as the source elements. Results are written to vd using 2× the element grouping (EEW). The number of elements and masking are governed by vl and vm.

Pseudocode Operation

foreach(i < vl): vd[i] = sext(vs1[i]) + sext(vs2[i]);

Example

VWADD.VV v1, v4, v2, v0.t

Encoding

Binary Layout
110001
31:26
vm
25
vs2
24:20
vs1
19:15
000
14:12
vd
11:7
1010111
6:0
 
Format OPIVV
Opcode 0x57
Extension V

Operands

  • vd
    Dest (2*SEW)
  • vs2
    Src 2 (SEW)
  • vs1
    Src 1 (SEW)