VWMACCUS.VV

Vector Widening MAC (Unsigned * Signed)

VWMACCUS.VV vd, vs1, vs2, vm

vd = vd + (unsigned(vs1) * signed(vs2)).

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

vd += zext(vs1) * sext(vs2);

Example

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

Encoding

Binary Layout
111110
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
    Acc
  • vs1
    Unsigned
  • vs2
    Signed