vplzcntd

Count Leading Zero Bits

VPLZCNTD zmm1 {k1}, zmm2/m512

Counts leading zeros for each doubleword element.

Details

The Count Leading Zero Bits instruction counts leading zeros for each doubleword element.

Pseudocode Operation

// Counts leading zeros for each doubleword element

Example

VPLZCNTD zmm1, zmm2/m512

Encoding

Binary Layout
EVEX
+0
66
+4
0F
+5
38
+6
44
+7
 
Format EVEX
Opcode 66 0F 38 44
Extension AVX-512CD

Operands

  • dest
    512-bit ZMM AVX-512 register
  • src
    512-bit ZMM AVX-512 register or Memory operand