vphaddbw

Vector Packed Horizontal Add Byte to Word

VPHADDBW xmm1, xmm2/m128

Adds adjacent bytes to words.

Details

The Vector Packed Horizontal Add Byte to Word instruction adds adjacent bytes to words.

Pseudocode Operation

// Adds adjacent bytes to words

Example

VPHADDBW xmm1, xmm2/m128

Encoding

Binary Layout
VEX
+0
opcode
+3
ModRM
+4
 
Format XOP
Opcode 8F ... C1
Extension XOP

Operands

  • dest
    128-bit XMM SIMD register
  • src
    128-bit XMM SIMD register or Memory operand