pmovsxbw

Packed Move with Sign Extend Byte to Word

PMOVSXBW xmm1, xmm2/m64

Sign extends 8-bit integers to 16-bit.

Details

The Packed Move with Sign Extend Byte to Word instruction sign extends 8-bit integers to 16-bit.

Pseudocode Operation

// Sign extends 8-bit integers to 16-bit

Example

PMOVSXBW xmm1, xmm2/m64

Encoding

Binary Layout
66
+0
0F
+1
38
+2
20
+3
 
Format SSE4.1
Opcode 66 0F 38 20
Extension SSE4.1

Operands

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