saddw

Signed Add Wide

SADDW <Vd>.<Td>, <Vn>.<Td>, <Vm>.<Ts>

Adds a wide vector to the lower/upper half of a narrow vector.

Details

The Signed Add Wide instruction adds a wide vector to the lower/upper half of a narrow vector.

Pseudocode Operation

Vd ← Vn + Vm
// Flags affected: N, Z, C, V

Example

SADDW v0.4s.Td, v1.4s.Td, v2.4s.Ts

Encoding

Binary Layout
0
Q
001110
size
1
0000
Rm
0001
Rn
Rd
 
Format SIMD Three Register Diff
Opcode 0x0E201000
Extension NEON (SIMD)

Operands

  • Vd
    Destination SIMD/FP vector register
  • Vn
    Src Wide
  • Vm
    Src Narrow