Instruction
VCOMISH
Compares the low half-precision values and sets ZF, PF and CF, clearing OF, SF and AF; any NaN signals an invalid exception.
- Extensions
- Forms
- 2 (2 EVEX)
- Data
- Intel XED v2026.08.23
Forms
| Instruction | Encoding | Requires |
|---|---|---|
VCOMISH xmm, xmm, {sae}
VCOMISH_XMMf16_XMMf16_AVX512 | EVEX.LIG.NP.MAP5.W0 2F /r | AVX10.1 or AVX512_FP16 |
VCOMISH xmm, m16
VCOMISH_XMMf16_MEMf16_AVX512 | EVEX.LIG.NP.MAP5.W0 2F /r | AVX10.1 or AVX512_FP16 |
CPUID and processors
Each form belongs to an XED ISA set. A form can be used when the processor reports every CPUID bit of one of its ISA set's alternatives.
| ISA set | CPUID | Processors in XED |
|---|---|---|
AVX512_FP16_SCALAR | AVX10.1 or AVX512_FP16 | Nova Lake, Sapphire Rapids, Emerald Rapids, Granite Rapids, Diamond Rapids |
More AVX10.1 instructions
- VBLENDMPS
- VBROADCASTF32X2
- VBROADCASTF32X4
- VBROADCASTF32X8
- VBROADCASTF64X2
- VBROADCASTF64X4
- VBROADCASTI32X2
- VBROADCASTI32X4
- VBROADCASTI32X8
- VBROADCASTI64X2
- VBROADCASTI64X4
- VBROADCASTSD
- VBROADCASTSS
- VCMPPD
- VCMPPH
- VCMPPS
- VCMPSD
- VCMPSH
- VCMPSS
- VCOMISD
- VCOMISS
- VCOMPRESSPD
- VCOMPRESSPS
- VCVTDQ2PD
- VCVTDQ2PH
- VCVTDQ2PS
- VCVTNE2PS2BF16
- VCVTNEPS2BF16
- VCVTPD2DQ
- VCVTPD2PH
- VCVTPD2PS
- VCVTPD2QQ
- VCVTPD2UDQ
- VCVTPD2UQQ
- VCVTPH2DQ
- VCVTPH2PD
- VCVTPH2PS
- VCVTPH2PSX
- VCVTPH2QQ
- VCVTPH2UDQ
Sources
- Intel XED v2026.08.23 (commit
0bcb6237345c): forms, encodings, ISA sets, CPUID bits and chip model. - Intel Advanced Vector Extensions 10.2 Architecture Specification, revision 6.0 (361050-006, January 2026)
The tables are derived from Intel XED, Copyright Intel Corporation, licensed under the Apache License 2.0; x86-64.net converted and reformatted them. The text is our own.