pmaddwd

Packed Multiply and Add Word to Doubleword

PMADDWD xmm1, xmm2/m128

Multiplies words, adds adjacent pairs to doublewords.

Details

The Packed Multiply and Add Word to Doubleword instruction multiplies words, adds adjacent pairs to doublewords.

Pseudocode Operation

// Multiplies words, adds adjacent pairs to doublewords

Example

PMADDWD xmm1, xmm2/m128

Encoding

Binary Layout
66
+0
0F
+1
F5
+2
 
Format SSE2
Opcode 66 0F F5
Extension SSE2

Operands

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