x86-64.net

Instruction

VCVTBIASPS2BF8S

Converts packed single-precision values to E5M2 FP8 with a rounding bias, saturating values too large for FP8 to its largest normal.

Extensions
Forms
6 (6 EVEX)
Data
Intel XED v2026.08.23

Forms

Every encoding of VCVTBIASPS2BF8S that Intel XED knows, one row per XED instruction form (iform). How to read the notation.
InstructionEncodingRequires
VCVTBIASPS2BF8S xmm {k}{z}, xmm, xmm VCVTBIASPS2BF8S_XMMbf8_MASKmskw_XMMf32_XMMf32_AVX512EVEX.128.NP.MAP5.W0 3B /rAVX10_V2_AUX + AVX10
VCVTBIASPS2BF8S xmm {k}{z}, xmm, m128/m32bcst VCVTBIASPS2BF8S_XMMbf8_MASKmskw_XMMf32_MEMf32_AVX512EVEX.128.NP.MAP5.W0 3B /rAVX10_V2_AUX + AVX10
VCVTBIASPS2BF8S xmm {k}{z}, ymm, ymm VCVTBIASPS2BF8S_XMMbf8_MASKmskw_YMMf32_YMMf32_AVX512EVEX.256.NP.MAP5.W0 3B /rAVX10_V2_AUX + AVX10
VCVTBIASPS2BF8S xmm {k}{z}, ymm, m256/m32bcst VCVTBIASPS2BF8S_XMMbf8_MASKmskw_YMMf32_MEMf32_AVX512EVEX.256.NP.MAP5.W0 3B /rAVX10_V2_AUX + AVX10
VCVTBIASPS2BF8S xmm {k}{z}, zmm, zmm VCVTBIASPS2BF8S_XMMbf8_MASKmskw_ZMMf32_ZMMf32_AVX512EVEX.512.NP.MAP5.W0 3B /rAVX10_V2_AUX + AVX10
VCVTBIASPS2BF8S xmm {k}{z}, zmm, m512/m32bcst VCVTBIASPS2BF8S_XMMbf8_MASKmskw_ZMMf32_MEMf32_AVX512EVEX.512.NP.MAP5.W0 3B /rAVX10_V2_AUX + AVX10

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.

CPUID requirements and processors of the XED ISA sets above. Alternatives are separated by “or”; processors follow XED’s chip model, which covers AMD processors up to Zen 2.
ISA setCPUIDProcessors in XED
AVX10_V2_AUX_128

AVX10_V2_AUX + AVX10
CPUID.(EAX=24H,ECX=1):ECX[3] AVX10_V2_AUX
CPUID.(EAX=07H,ECX=1):EDX[19] AVX10

None yet: XED lists these instructions only under its placeholder for future processors.
AVX10_V2_AUX_256

AVX10_V2_AUX + AVX10
CPUID.(EAX=24H,ECX=1):ECX[3] AVX10_V2_AUX
CPUID.(EAX=07H,ECX=1):EDX[19] AVX10

None yet: XED lists these instructions only under its placeholder for future processors.
AVX10_V2_AUX_512

AVX10_V2_AUX + AVX10
CPUID.(EAX=24H,ECX=1):ECX[3] AVX10_V2_AUX
CPUID.(EAX=07H,ECX=1):EDX[19] AVX10

None yet: XED lists these instructions only under its placeholder for future processors.

More AVX10_V2_AUX instructions

Sources

  1. Intel XED v2026.08.23 (commit 0bcb6237345c): forms, encodings, ISA sets, CPUID bits and chip model.
  2. x86 Ecosystem Advisory Group: AI Compute Extensions (ACE) Specification, version 1.16.2 (July 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.