VPOPCNTB
REG0=ZMM_R3():w:zu8 REG1=MASK1():r:mskw:TXT=ZEROSTR MEM0:r:zd:u8
x86_64 X86_LEGACY AVX512 AVX512_BITALG_512 source: xed
XED_VPOPCNTB_ZMMu8_MASKmskw_MEMu8_AVX512
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | 54 |
| opcode_map | ONEBYTE |
| mandatory_prefix | - |
| has_modrm | True |
| vex_l | 2 |
| attributes | MEMORY_FAULT_SUPPRESSION MASKOP_EVEX DISP8_FULLMEM |
| exception_class | AVX512-E4 |
| cpl | 3 |
| raw_encoding | EVV 0x54 V66 V0F38 MOD[mm] MOD!=3 UBIT=1 REG[rrr] RM[nnn] BCRC=0 MODRM() VL512 W0 NOEVSR ESIZE_8_BITS() NELEM_FULLMEM() |
Operands (3)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | REG0 | REG | w | W | EXPLICIT | MODRM_REG | |
| 1 | REG1 | REG | R | EXPLICIT | MODRM_REG | ||
| 2 | MEM0 | MEM | R | EXPLICIT | MODRM_RM |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.