ktestd

Test Masks Doubleword

KTESTD k1, k2

ANDs 32-bit masks and sets EFLAGS (ZF/CF).

Details

The Test Masks Doubleword instruction aNDs 32-bit masks and sets EFLAGS (ZF/CF).

Pseudocode Operation

// ANDs 32-bit masks and sets EFLAGS (ZF/CF)

Example

KTESTD k1, k2

Encoding

Binary Layout
EVEX
+0
0F
+4
99
+5
 
Format EVEX
Opcode 0F 99
Extension AVX-512BW

Operands

  • dest
    AVX-512 opmask register (k0-k7)
  • src
    AVX-512 opmask register (k0-k7)