pcmpeqb

Packed Compare Equal Byte

PCMPEQB xmm, xmm/m128

Compares bytes for equality (Result mask 0xFF or 0x00).

Details

The Packed Compare Equal Byte instruction compares bytes for equality (Result mask 0xFF or 0x00).

Pseudocode Operation

// Compares bytes for equality (Result mask 0xFF or 0x00)

Example

PCMPEQB xmm0, xmm1

Encoding

Binary Layout
66
+0
0F
+1
74
+2
 
Format SSE2
Opcode 66 0F 74
Extension SSE2

Operands

  • dest
    128-bit SSE/AVX register (XMM)
  • src
    128-bit XMM register or 128-bit memory