VUCOMISD

REG0=XMM_R():r:dq:f64 MEM0:r:q:f64 REG0=XMM_R():r:dq:f64 REG1=XMM_B():r:q:f64

x86_64 X86_LEGACY AVX512 AVX source: xed

XED_VUCOMISD_X86_LEGACY_ONEBYTE_2E_42549

Encoding

encoding_kindX86_LEGACY
opcode_bytes2E 2E
opcode_mapONEBYTE
mandatory_prefix-
has_modrmTrue
attributessimd_scalar MXCSR
exception_classavx-type-3
cpl3
raw_encodingVV1 0x2E V66 V0F NOVSR MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM() VV1 0x2E V66 V0F NOVSR MOD[0b11] MOD=3 REG[rrr] RM[nnn]

Operands (4)

# Role Kind Class / Reg Width Access Visibility Encoded in
0 REG0 REG f64 R EXPLICIT MODRM_REG
1 MEM0 MEM q R EXPLICIT MODRM_RM
2 REG1 REG f64 R EXPLICIT MODRM_REG
3 REG2 REG q R EXPLICIT MODRM_REG

Flag effects (6)

CF = WRITE PF = WRITE AF = SET_0 ZF = WRITE SF = SET_0 OF = SET_0

Micro-ops sequence (0)

No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.