| adx | Support ADX instructions. | ⛔️ |
| aes | Enable AES instructions. | ⛔️ |
| avx | Enable AVX instructions. | ⛔️ |
| avx2 | Enable AVX2 instructions. | ⛔️ |
| avx512bf16 | Support bfloat16 floating point. | ⛔️ |
| avx512bitalg | Enable AVX-512 Bit Algorithms. | ⛔️ |
| avx512bw | Enable AVX-512 Byte and Word Instructions. | ⛔️ |
| avx512cd | Enable AVX-512 Conflict Detection Instructions. | ⛔️ |
| avx512dq | Enable AVX-512 Doubleword and Quadword Instructions. | ⛔️ |
| avx512er | Enable AVX-512 Exponential and Reciprocal Instructions. | ⛔️ |
| avx512f | Enable AVX-512 instructions. | ⛔️ |
| avx512gfni | Enable Galois Field Arithmetic Instructions. | ⛔️ |
| avx512ifma | Enable AVX-512 Integer Fused Multiple-Add. | ⛔️ |
| avx512pf | Enable AVX-512 PreFetch Instructions. | ⛔️ |
| avx512vaes | Promote selected AES instructions to AVX512/AVX registers. | ⛔️ |
| avx512vbmi | Enable AVX-512 Vector Byte Manipulation Instructions. | ⛔️ |
| avx512vbmi2 | Enable AVX-512 further Vector Byte Manipulation Instructions. | ⛔️ |
| avx512vl | Enable AVX-512 Vector Length eXtensions. | ⛔️ |
| avx512vnni | Enable AVX-512 Vector Neural Network Instructions. | ⛔️ |
| avx512vp2intersect | Enable AVX-512 vp2intersect. | ⛔️ |
| avx512vpclmulqdq | Enable vpclmulqdq instructions. | ⛔️ |
| avx512vpopcntdq | Enable AVX-512 Population Count Instructions. | ⛔️ |
| bmi1 | Support BMI instructions. | ⛔️ |
| bmi2 | Support BMI2 instructions. | ⛔️ |
| cmpxchg16b | 64-bit with cmpxchg16b (this is true for most x86-64 chips, but not the first AMD chips). | ⛔️ |
| ermsb | REP MOVS/STOS are fast. | ⛔️ |
| f16c | Support 16-bit floating point conversion instructions. | ⛔️ |
| fma | Enable three-operand fused multiple-add. | ⛔️ |
| fxsr | Support fxsave/fxrestore instructions. | ⛔️ |
| lzcnt | Support LZCNT instruction. | ⛔️ |
| movbe | Support MOVBE instruction. | ⛔️ |
| pclmulqdq | Enable packed carry-less multiplication instructions. | ⛔️ |
| popcnt | Support POPCNT instruction. | ⛔️ |
| rdrand | Support RDRAND instruction. | ⛔️ |
| rdseed | Support RDSEED instruction. | ⛔️ |
| rtm | Support RTM instructions. | ⛔️ |
| sha | Enable SHA instructions. | ⛔️ |
| sse | Enable SSE instructions. | ⛔️ |
| sse2 | Enable SSE2 instructions. | ⛔️ |
| sse3 | Enable SSE3 instructions. | ⛔️ |
| sse4.1 | Enable SSE 4.1 instructions. | ⛔️ |
| sse4.2 | Enable SSE 4.2 instructions. | ⛔️ |
| sse4a | Support SSE 4a instructions. | ⛔️ |
| ssse3 | Enable SSSE3 instructions. | ⛔️ |
| tbm | Enable TBM instructions. | ⛔️ |
| xsave | Support xsave instructions. | ⛔️ |
| xsavec | Support xsavec instructions. | ⛔️ |
| xsaveopt | Support xsaveopt instructions. | ⛔️ |
| xsaves | Support xsaves instructions. | ⛔️ |
| crt-static | Enables C Run-time Libraries to be statically linked. | ⛔️ |
| 16bit-mode | 16-bit mode (i8086). | ✅ |
| 32bit-mode | 32-bit mode (80386). | ✅ |
| 3dnow | Enable 3DNow! instructions. | ✅ |
| 3dnowa | Enable 3DNow! Athlon instructions. | ✅ |
| 64bit | Support 64-bit instructions. | ✅ |
| 64bit-mode | 64-bit mode (x86_64). | ✅ |
| amx-bf16 | Support AMX-BF16 instructions. | ✅ |
| amx-int8 | Support AMX-INT8 instructions. | ✅ |
| amx-tile | Support AMX-TILE instructions. | ✅ |
| avx512fp16 | Support 16-bit floating point. | ✅ |
| avxvnni | Support AVX_VNNI encoding. | ✅ |
| branchfusion | CMP/TEST can be fused with conditional branches. | ✅ |
| cldemote | Enable Cache Line Demote. | ✅ |
| clflushopt | Flush A Cache Line Optimized. | ✅ |
| clwb | Cache Line Write Back. | ✅ |
| clzero | Enable Cache Line Zero. | ✅ |
| cmov | Enable conditional move instructions. | ✅ |
| crc32 | Enable SSE 4.2 CRC32 instruction (used when SSE4.2 is supported but function is GPR only). | ✅ |
| cx8 | Support CMPXCHG8B instructions. | ✅ |
| enqcmd | Has ENQCMD instructions. | ✅ |
| false-deps-getmant | VGETMANTSS/SD/SH and VGETMANDPS/PD(memory version) has a false dependency on dest register. | ✅ |
| false-deps-lzcnt-tzcnt | LZCNT/TZCNT have a false dependency on dest register. | ✅ |
| false-deps-mulc | VF[C]MULCPH/SH has a false dependency on dest register. | ✅ |
| false-deps-mullq | VPMULLQ has a false dependency on dest register. | ✅ |
| false-deps-perm | VPERMD/Q/PS/PD has a false dependency on dest register. | ✅ |
| false-deps-popcnt | POPCNT has a false dependency on dest register. | ✅ |
| false-deps-range | VRANGEPD/PS/SD/SS has a false dependency on dest register. | ✅ |
| fast-11bytenop | Target can quickly decode up to 11 byte NOPs. | ✅ |
| fast-15bytenop | Target can quickly decode up to 15 byte NOPs. | ✅ |
| fast-7bytenop | Target can quickly decode up to 7 byte NOPs. | ✅ |
| fast-bextr | Indicates that the BEXTR instruction is implemented as a single uop with good throughput. | ✅ |
| fast-gather | Indicates if gather is reasonably fast (this is true for Skylake client and all AVX-512 CPUs). | ✅ |
| fast-hops | Prefer horizontal vector math instructions (haddp, phsub, etc.) over normal vector instructions with shuffles. | ✅ |
| fast-lzcnt | LZCNT instructions are as fast as most simple integer ops. | ✅ |
| fast-movbe | Prefer a movbe over a single-use load + bswap / single-use bswap + store. | ✅ |
| fast-scalar-fsqrt | Scalar SQRT is fast (disable Newton-Raphson). | ✅ |
| fast-scalar-shift-masks | Prefer a left/right scalar logical shift pair over a shift+and pair. | ✅ |
| fast-shld-rotate | SHLD can be used as a faster rotate. | ✅ |
| fast-variable-crosslane-shuffle | Cross-lane shuffles with variable masks are fast. | ✅ |
| fast-variable-perlane-shuffle | Per-lane shuffles with variable masks are fast. | ✅ |
| fast-vector-fsqrt | Vector SQRT is fast (disable Newton-Raphson). | ✅ |
| fast-vector-shift-masks | Prefer a left/right vector logical shift pair over a shift+and pair. | ✅ |
| fma4 | Enable four-operand fused multiple-add. | ✅ |
| fsgsbase | Support FS/GS Base instructions. | ✅ |
| fsrm | REP MOVSB of short lengths is faster. | ✅ |
| harden-sls-ijmp | Harden against straight line speculation across indirect JMP instructions.. | ✅ |
| harden-sls-ret | Harden against straight line speculation across RET instructions.. | ✅ |
| hreset | Has hreset instruction. | ✅ |
| idivl-to-divb | Use 8-bit divide for positive values less than 256. | ✅ |
| idivq-to-divl | Use 32-bit divide for positive values less than 2^32. | ✅ |
| invpcid | Invalidate Process-Context Identifier. | ✅ |
| kl | Support Key Locker kl Instructions. | ✅ |
| lea-sp | Use LEA for adjusting the stack pointer (this is an optimization for Intel Atom processors). | ✅ |
| lea-uses-ag | LEA instruction needs inputs at AG stage. | ✅ |
| lvi-cfi | Prevent indirect calls/branches from using a memory operand, and precede all indirect calls/branches from a register with an LFENCE instruction to serialize control flow. Also decompose RET instructions into a POP+LFENCE+JMP sequence.. | ✅ |
| lvi-load-hardening | Insert LFENCE instructions to prevent data speculatively injected into loads from being used maliciously.. | ✅ |
| lwp | Enable LWP instructions. | ✅ |
| macrofusion | Various instructions can be fused with conditional branches. | ✅ |
| mmx | Enable MMX instructions. | ✅ |
| movdir64b | Support movdir64b instruction (direct store 64 bytes). | ✅ |
| movdiri | Support movdiri instruction (direct store integer). | ✅ |
| mwaitx | Enable MONITORX/MWAITX timer functionality. | ✅ |
| nopl | Enable NOPL instruction (generally pentium pro+). | ✅ |
| pad-short-functions | Pad short functions (to prevent a stall when returning too early). | ✅ |
| pconfig | platform configuration instruction. | ✅ |
| pku | Enable protection keys. | ✅ |
| prefer-128-bit | Prefer 128-bit AVX instructions. | ✅ |
| prefer-256-bit | Prefer 256-bit AVX instructions. | ✅ |
| prefer-mask-registers | Prefer AVX512 mask registers over PTEST/MOVMSK. | ✅ |
| prefetchwt1 | Prefetch with Intent to Write and T1 Hint. | ✅ |
| prfchw | Support PRFCHW instructions. | ✅ |
| ptwrite | Support ptwrite instruction. | ✅ |
| rdpid | Support RDPID instructions. | ✅ |
| rdpru | Support RDPRU instructions. | ✅ |
| retpoline | Remove speculation of indirect branches from the generated code, either by avoiding them entirely or lowering them with a speculation blocking construct. | ✅ |
| retpoline-external-thunk | When lowering an indirect call or branch using a `retpoline`, rely on the specified user provided thunk rather than emitting one ourselves. Only has effect when combined with some other retpoline feature. | ✅ |
| retpoline-indirect-branches | Remove speculation of indirect branches from the generated code. | ✅ |
| retpoline-indirect-calls | Remove speculation of indirect calls from the generated code. | ✅ |
| sahf | Support LAHF and SAHF instructions in 64-bit mode. | ✅ |
| sbb-dep-breaking | SBB with same register has no source dependency. | ✅ |
| serialize | Has serialize instruction. | ✅ |
| seses | Prevent speculative execution side channel timing attacks by inserting a speculation barrier before memory reads, memory writes, and conditional branches. Implies LVI Control Flow integrity.. | ✅ |
| sgx | Enable Software Guard Extensions. | ✅ |
| shstk | Support CET Shadow-Stack instructions. | ✅ |
| slow-3ops-lea | LEA instruction with 3 ops or certain registers is slow. | ✅ |
| slow-incdec | INC and DEC instructions are slower than ADD and SUB. | ✅ |
| slow-lea | LEA instruction with certain arguments is slow. | ✅ |
| slow-pmaddwd | PMADDWD is slower than PMULLD. | ✅ |
| slow-pmulld | PMULLD instruction is slow (compared to PMULLW/PMULHW and PMULUDQ). | ✅ |
| slow-shld | SHLD instruction is slow. | ✅ |
| slow-two-mem-ops | Two memory operand instructions are slow. | ✅ |
| slow-unaligned-mem-16 | Slow unaligned 16-byte memory access. | ✅ |
| slow-unaligned-mem-32 | Slow unaligned 32-byte memory access. | ✅ |
| soft-float | Use software floating point features. | ✅ |
| sse-unaligned-mem | Allow unaligned memory operands with SSE instructions (this may require setting a configuration bit in the processor). | ✅ |
| tagged-globals | Use an instruction sequence for taking the address of a global that allows a memory tag in the upper address bits.. | ✅ |
| tsxldtrk | Support TSXLDTRK instructions. | ✅ |
| uintr | Has UINTR Instructions. | ✅ |
| use-glm-div-sqrt-costs | Use Goldmont specific floating point div/sqrt costs. | ✅ |
| use-slm-arith-costs | Use Silvermont specific arithmetic costs. | ✅ |
| vzeroupper | Should insert vzeroupper instructions. | ✅ |
| waitpkg | Wait and pause enhancements. | ✅ |
| wbnoinvd | Write Back No Invalidate. | ✅ |
| widekl | Support Key Locker wide Instructions. | ✅ |
| x87 | Enable X87 float instructions. | ✅ |
| xop | Enable XOP instructions. | ✅ |