gentoo-overlay/profiles/desc/cpu_flags_x86.desc

# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

# Whenever the flag name does not correspond to /proc/cpuinfo flags,
# please put the cpuinfo flag in square brackets. If more than one flag
# is specified, any of them will enable the respective USE flag.

3dnow - Use the 3DNow! instruction set
3dnowext - Use the Enhanced 3DNow! instruction set
aes - Enable support for Intel's AES instruction set (AES-NI)
avx - Adds support for Advanced Vector Extensions instructions
avx2 - Adds support for Advanced Vector Extensions 2 instructions
avx512_4fmaps - Use AVX-512 Fused Multiply-Accumulate Packed Single Precision instruction set
avx512_4vnniw - Use AVX-512 Vector Neural Network Instructions Word Variable Precision
avx512_bf16 - Use AVX-512 BFloat16 instruction set
avx512_bitalg - Use AVX-512 Bit Algorithms instruction set
avx512_fp16 - Use general-purpose numeric operations for 16-bit half-precision instruction set
avx512_vbmi2 - Use AVX-512 Vector Bit Manipulation Instructions 2
avx512_vnni - Use vector neural network instructions for 8- and 16-bit multiply-add operations
avx512_vp2intersect - Use AVX-512 Intersect instruction set
avx512_vpopcntdq - Use AVX-512 Vector Population Count Doubleword and Quadword instruction set
avx512dq - Use AVX-512 double- and quad-word instructions
avx512f - Adds support for AVX-512 Foundation instructions
avx512ifma - Use AVX-512 Integer Fused Multiply-Add instruction set
avx512vl - Use AVX-512 vector-length instructions
f16c - Adds support for F16C instruction set for converting between half-precision and single-precision floats
fma3 - Use the Fused Multiply Add 3 instruction set ([fma] in cpuinfo)
fma4 - Use the Fused Multiply Add 4 instruction set
mmx - Use the MMX instruction set
mmxext - Use the Extended MMX instruction set (a subset of SSE) ([mmxext] or [sse] in cpuinfo)
padlock - Use VIA padlock instructions ([phe] in cpuinfo)
pclmul - Use Carry-less Multiplication instructions ([pclmulqdq] in cpuinfo)
popcnt - Enable popcnt instruction support ([abm] or [popcnt] in cpuinfo)
rdrand - Use the RDRAND instruction for generating random numbers
sha - Use the SHA-NI instruction set
sse - Use the SSE instruction set
sse2 - Use the SSE2 instruction set
sse3 - Use the SSE3 instruction set ([pni] in cpuinfo, NOT ssse3)
sse4_1 - Enable SSE4.1 instruction support
sse4_2 - Enable SSE4.2 instruction support
sse4a - Enable SSE4a instruction support
ssse3 - Use the SSSE3 instruction set (NOT sse3/pni)
vpclmulqdq - Use Vector Carry-Less Multiplication of Quadwords instruction set
xop - Enable the XOP instruction set