PackagesUse the Extended MMX instruction set (a subset of SSE) ([mmxext] or [sse] in cpuinfo)
| Use Flag | Description |
|---|---|
| cpu_flags_x86_3dnow | Use the 3DNow! instruction set |
| cpu_flags_x86_3dnowext | Use the Enhanced 3DNow! instruction set |
| cpu_flags_x86_aes | Enable support for Intel's AES instruction set (AES-NI) |
| cpu_flags_x86_avx | Adds support for Advanced Vector Extensions instructions |
| cpu_flags_x86_avx2 | Adds support for Advanced Vector Extensions 2 instructions |
| cpu_flags_x86_avx512_4fmaps | Use AVX-512 Fused Multiply-Accumulate Packed Single Precision instruction set |
| cpu_flags_x86_avx512_4vnniw | Use AVX-512 Vector Neural Network Instructions Word Variable Precision |
| cpu_flags_x86_avx512_bf16 | Use AVX-512 BFloat16 instruction set |
| cpu_flags_x86_avx512_bitalg | Use AVX-512 Bit Algorithms instruction set |
| cpu_flags_x86_avx512bw | Use AVX-512 byte- and word instructions |
| cpu_flags_x86_avx512cd | Use AVX-512 conflict detection instructions |
| cpu_flags_x86_avx512dq | Use AVX-512 double- and quad-word instructions |
| cpu_flags_x86_avx512er | Use AVX-512 exponential and reciprocal instructions |
| cpu_flags_x86_avx512f | Adds support for AVX-512 Foundation instructions |
| cpu_flags_x86_avx512_fp16 | Use general-purpose numeric operations for 16-bit half-precision instruction set |
| cpu_flags_x86_avx512ifma | Use AVX-512 Integer Fused Multiply-Add instruction set |
| cpu_flags_x86_avx512pf | Use AVX-512 prefetch instructions |
| cpu_flags_x86_avx512vbmi | Use AVX-512 vector byte manipulation instructions |
| cpu_flags_x86_avx512_vbmi2 | Use AVX-512 Vector Bit Manipulation Instructions 2 |
| cpu_flags_x86_avx512vl | Use AVX-512 vector-length instructions |
| cpu_flags_x86_avx512_vnni | Use vector neural network instructions for 8- and 16-bit multiply-add operations |
| cpu_flags_x86_avx512_vp2intersect | Use AVX-512 Intersect instruction set |
| cpu_flags_x86_avx512_vpopcntdq | Use AVX-512 Vector Population Count Doubleword and Quadword instruction set |
| cpu_flags_x86_f16c | Adds support for F16C instruction set for converting between half-precision and single-precision floats |
| cpu_flags_x86_fma3 | Use the Fused Multiply Add 3 instruction set ([fma] in cpuinfo) |
| cpu_flags_x86_fma4 | Use the Fused Multiply Add 4 instruction set |
| cpu_flags_x86_mmx | Use the MMX instruction set |
| cpu_flags_x86_mmxext | Use the Extended MMX instruction set (a subset of SSE) ([mmxext] or [sse] in cpuinfo) |
| cpu_flags_x86_padlock | Use VIA padlock instructions ([phe] in cpuinfo) |
| cpu_flags_x86_pclmul | Use Carry-less Multiplication instructions ([pclmulqdq] in cpuinfo) |
| cpu_flags_x86_popcnt | Enable popcnt instruction support ([abm] or [popcnt] in cpuinfo) |
| cpu_flags_x86_rdrand | Use the RDRAND instruction for generating random numbers |
| cpu_flags_x86_sha | Use the SHA-NI instruction set |
| cpu_flags_x86_sse | Use the SSE instruction set |
| cpu_flags_x86_sse2 | Use the SSE2 instruction set |
| cpu_flags_x86_sse3 | Use the SSE3 instruction set ([pni] in cpuinfo, NOT ssse3) |
| cpu_flags_x86_sse4_1 | Enable SSE4.1 instruction support |
| cpu_flags_x86_sse4_2 | Enable SSE4.2 instruction support |
| cpu_flags_x86_sse4a | Enable SSE4a instruction support |
| cpu_flags_x86_ssse3 | Use the SSSE3 instruction set (NOT sse3/pni) |
| cpu_flags_x86_vpclmulqdq | Use Vector Carry-Less Multiplication of Quadwords instruction set |
| cpu_flags_x86_xop | Enable the XOP instruction set |