vcnt

Vector Count Set Bits

VCNT<c>.8 <Qd>, <Qm>

Population count (number of 1s) per byte.

Details

The Vector Count Set Bits instruction population count (number of 1s) per byte.

Pseudocode Operation

// Population count (number of 1s) per byte

Example

VCNT.8 q0, q2

Encoding

Binary Layout
11110011
1
D
11
00
00
Vd
00101
Q
M
0
Vm
 
Format NEON 2-Reg
Opcode 0xF3B00500
Extension NEON (SIMD)

Operands

  • Qd
    Destination 128-bit SIMD register
  • Qm
    Second source 128-bit SIMD register