Module target_features::docs::aarch64

aarch64 documentation

Features

Feature	Description	Also Enables†
aes	Enable AES support (FEAT_AES, FEAT_PMULL).	neon
bf16	Enable BFloat16 Extension (FEAT_BF16).
bti	Enable Branch Target Identification (FEAT_BTI).
crc	Enable ARMv8 CRC-32 checksum instructions (FEAT_CRC32).
dit	Enable v8.4-A Data Independent Timing instructions (FEAT_DIT).
dotprod	Enable dot product support (FEAT_DotProd).
dpb	Enable v8.2 data Cache Clean to Point of Persistence (FEAT_DPB).
dpb2	Enable v8.5 Cache Clean to Point of Deep Persistence (FEAT_DPB2).
f32mm	Enable Matrix Multiply FP32 Extension (FEAT_F32MM).	fp16, neon, sve
f64mm	Enable Matrix Multiply FP64 Extension (FEAT_F64MM).	fp16, neon, sve
fcma	Enable v8.3-A Floating-point complex number support (FEAT_FCMA).	neon
fhm	Enable FP16 FML instructions (FEAT_FHM).	fp16, neon
flagm	Enable v8.4-A Flag Manipulation Instructions (FEAT_FlagM).
fp16	Full FP16 (FEAT_FP16).	neon
frintts	Enable FRInt[32	64][Z
i8mm	Enable Matrix Multiply Int8 Extension (FEAT_I8MM).
jsconv	Enable v8.3-A JavaScript FP conversion instructions (FEAT_JSCVT).	neon
lor	Enables ARM v8.1 Limited Ordering Regions extension (FEAT_LOR).
lse	Enable ARMv8.1 Large System Extension (LSE) atomic instructions (FEAT_LSE).
mte	Enable Memory Tagging Extension (FEAT_MTE, FEAT_MTE2).
neon	Enable Advanced SIMD instructions (FEAT_AdvSIMD).
paca	Enable v8.3-A Pointer Authentication extension (FEAT_PAuth).	pacg
pacg	Enable v8.3-A Pointer Authentication extension (FEAT_PAuth).	paca
pan	Enables ARM v8.1 Privileged Access-Never extension (FEAT_PAN).
pmuv3	Enable Code Generation for ARMv8 PMUv3 Performance Monitors extension (FEAT_PMUv3).
rand	Enable Random Number generation instructions (FEAT_RNG).
ras	Enable ARMv8 Reliability, Availability and Serviceability Extensions (FEAT_RAS, FEAT_RASv1p1).
rcpc	Enable support for RCPC extension (FEAT_LRCPC).
rcpc2	Enable v8.4-A RCPC instructions with Immediate Offsets (FEAT_LRCPC2).	rcpc
rdm	Enable ARMv8.1 Rounding Double Multiply Add/Subtract instructions (FEAT_RDM).
sb	Enable v8.5 Speculation Barrier (FEAT_SB).
sha2	Enable SHA1 and SHA256 support (FEAT_SHA1, FEAT_SHA256).	neon
sha3	Enable SHA512 and SHA3 support (FEAT_SHA3, FEAT_SHA512).	neon, sha2
sm4	Enable SM3 and SM4 support (FEAT_SM4, FEAT_SM3).	neon
spe	Enable Statistical Profiling extension (FEAT_SPE).
ssbs	Enable Speculative Store Bypass Safe bit (FEAT_SSBS, FEAT_SSBS2).
sve	Enable Scalable Vector Extension (SVE) instructions (FEAT_SVE).	fp16, neon
sve2	Enable Scalable Vector Extension 2 (SVE2) instructions (FEAT_SVE2).	fp16, neon, sve
sve2-aes	Enable AES SVE2 instructions (FEAT_SVE_AES, FEAT_SVE_PMULL128).	aes, fp16, neon, sve, sve2
sve2-bitperm	Enable bit permutation SVE2 instructions (FEAT_SVE_BitPerm).	fp16, neon, sve, sve2
sve2-sha3	Enable SHA3 SVE2 instructions (FEAT_SVE_SHA3).	fp16, neon, sha2, sha3, sve, sve2
sve2-sm4	Enable SM4 SVE2 instructions (FEAT_SVE_SM4).	fp16, neon, sm4, sve, sve2
tme	Enable Transactional Memory Extension (FEAT_TME).
v8.1a	Support ARM v8.1a instructions.	crc, lor, lse, pan, rdm, vh
v8.2a	Support ARM v8.2a instructions.	crc, dpb, lor, lse, pan, ras, rdm, v8.1a, vh
v8.3a	Support ARM v8.3a instructions.	crc, dpb, fcma, jsconv, lor, lse, neon, paca, pacg, pan, ras, rcpc, rdm, v8.1a, v8.2a, vh
v8.4a	Support ARM v8.4a instructions.	crc, dit, dotprod, dpb, fcma, flagm, jsconv, lor, lse, neon, paca, pacg, pan, ras, rcpc, rcpc2, rdm, v8.1a, v8.2a, v8.3a, vh
v8.5a	Support ARM v8.5a instructions.	bti, crc, dit, dotprod, dpb, dpb2, fcma, flagm, frintts, jsconv, lor, lse, neon, paca, pacg, pan, ras, rcpc, rcpc2, rdm, sb, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, vh
v8.6a	Support ARM v8.6a instructions.	bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, flagm, frintts, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, ras, rcpc, rcpc2, rdm, sb, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, vh
v8.7a	Support ARM v8.7a instructions.	bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, flagm, frintts, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, ras, rcpc, rcpc2, rdm, sb, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, v8.6a, vh
vh	Enables ARM v8.1 Virtual Host extension (FEAT_VHE).
crt-static	Enables C Run-time Libraries to be statically linked.

^† This is often empirical, rather than specified in any standard, i.e. all available CPUs with a particular feature also have another feature.

CPUs

CPU	Enabled Features
a64fx	crc, dpb, fcma, fp16, lor, lse, neon, pan, pmuv3, ras, rdm, sha2, sve, v8.1a, v8.2a, vh
ampere1	aes, bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, flagm, frintts, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, rand, ras, rcpc, rcpc2, rdm, sb, sha2, sha3, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, v8.6a, vh
ampere1a	aes, bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, flagm, frintts, i8mm, jsconv, lor, lse, mte, neon, paca, pacg, pan, pmuv3, rand, ras, rcpc, rcpc2, rdm, sb, sha2, sha3, sm4, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, v8.6a, vh
apple-a10	aes, crc, lor, neon, pan, pmuv3, rdm, sha2, vh
apple-a11	aes, crc, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rdm, sha2, v8.1a, v8.2a, vh
apple-a12	aes, crc, dpb, fcma, fp16, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rdm, sha2, v8.1a, v8.2a, v8.3a, vh
apple-a13	aes, crc, dit, dotprod, dpb, fcma, fhm, flagm, fp16, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sha2, sha3, v8.1a, v8.2a, v8.3a, v8.4a, vh
apple-a14	aes, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, sha2, sha3, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, vh
apple-a15	aes, bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, sha2, sha3, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, v8.6a, vh
apple-a16	aes, bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, sha2, sha3, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, v8.6a, vh
apple-a7	aes, neon, pmuv3, sha2
apple-a8	aes, neon, pmuv3, sha2
apple-a9	aes, neon, pmuv3, sha2
apple-latest	aes, bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, sha2, sha3, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, v8.6a, vh
apple-m1	aes, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, sha2, sha3, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, vh
apple-m2	aes, bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, sha2, sha3, ssbs, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, v8.6a, vh
apple-s4	aes, crc, dpb, fcma, fp16, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rdm, sha2, v8.1a, v8.2a, v8.3a, vh
apple-s5	aes, crc, dpb, fcma, fp16, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rdm, sha2, v8.1a, v8.2a, v8.3a, vh
carmel	aes, crc, dpb, fp16, lor, lse, neon, pan, ras, rdm, sha2, v8.1a, v8.2a, vh
cortex-a34	aes, crc, neon, pmuv3, sha2
cortex-a35	aes, crc, neon, pmuv3, sha2
cortex-a510	bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, mte, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, ssbs, sve, sve2, sve2-bitperm, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, vh
cortex-a53	aes, crc, neon, pmuv3, sha2
cortex-a55	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, v8.1a, v8.2a, vh
cortex-a57	aes, crc, neon, pmuv3, sha2
cortex-a65	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, ssbs, v8.1a, v8.2a, vh
cortex-a65ae	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, ssbs, v8.1a, v8.2a, vh
cortex-a710	bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, mte, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, ssbs, sve, sve2, sve2-bitperm, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, vh
cortex-a715	bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, mte, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, spe, ssbs, sve, sve2, sve2-bitperm, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, vh
cortex-a72	aes, crc, neon, pmuv3, sha2
cortex-a73	aes, crc, neon, pmuv3, sha2
cortex-a75	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, v8.1a, v8.2a, vh
cortex-a76	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, ssbs, v8.1a, v8.2a, vh
cortex-a76ae	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, ssbs, v8.1a, v8.2a, vh
cortex-a77	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, ssbs, v8.1a, v8.2a, vh
cortex-a78	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, spe, ssbs, v8.1a, v8.2a, vh
cortex-a78c	aes, crc, dotprod, dpb, fhm, flagm, fp16, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rdm, sha2, spe, ssbs, v8.1a, v8.2a, vh
cortex-r82	crc, dit, dotprod, dpb, fcma, fhm, flagm, fp16, jsconv, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, ssbs
cortex-x1	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, spe, ssbs, v8.1a, v8.2a, vh
cortex-x1c	aes, crc, dotprod, dpb, flagm, fp16, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sha2, spe, ssbs, v8.1a, v8.2a, vh
cortex-x2	bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, mte, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, ssbs, sve, sve2, sve2-bitperm, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, vh
cortex-x3	bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, mte, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, spe, ssbs, sve, sve2, sve2-bitperm, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, vh
cyclone	aes, neon, pmuv3, sha2
exynos-m3	aes, crc, neon, pmuv3, sha2
exynos-m4	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rdm, sha2, v8.1a, v8.2a, vh
exynos-m5	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rdm, sha2, v8.1a, v8.2a, vh
falkor	aes, crc, neon, pmuv3, rdm, sha2
generic	neon
kryo	aes, crc, neon, pmuv3, sha2
neoverse-512tvb	aes, bf16, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, rand, ras, rcpc, rcpc2, rdm, sha2, spe, ssbs, sve, v8.1a, v8.2a, v8.3a, v8.4a, vh
neoverse-e1	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, ssbs, v8.1a, v8.2a, vh
neoverse-n1	aes, crc, dotprod, dpb, fp16, lor, lse, neon, pan, pmuv3, ras, rcpc, rdm, sha2, spe, ssbs, v8.1a, v8.2a, vh
neoverse-n2	aes, bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, flagm, fp16, frintts, i8mm, jsconv, lor, lse, mte, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sb, sha2, ssbs, sve, sve2, sve2-bitperm, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, vh
neoverse-v1	aes, bf16, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, i8mm, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, rand, ras, rcpc, rcpc2, rdm, sha2, spe, ssbs, sve, v8.1a, v8.2a, v8.3a, v8.4a, vh
neoverse-v2	bf16, bti, crc, dit, dotprod, dpb, dpb2, fcma, fhm, flagm, fp16, frintts, i8mm, jsconv, lor, lse, mte, neon, paca, pacg, pan, pmuv3, rand, ras, rcpc, rcpc2, rdm, sb, spe, ssbs, sve, sve2, sve2-bitperm, v8.1a, v8.2a, v8.3a, v8.4a, v8.5a, vh
saphira	aes, crc, dit, dotprod, dpb, fcma, flagm, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rcpc2, rdm, sha2, spe, v8.1a, v8.2a, v8.3a, v8.4a, vh
thunderx	aes, crc, neon, pmuv3, sha2
thunderx2t99	aes, crc, lor, lse, neon, pan, rdm, sha2, v8.1a, vh
thunderx3t110	aes, crc, dpb, fcma, jsconv, lor, lse, neon, paca, pacg, pan, pmuv3, ras, rcpc, rdm, sha2, v8.1a, v8.2a, v8.3a, vh
thunderxt81	aes, crc, neon, pmuv3, sha2
thunderxt83	aes, crc, neon, pmuv3, sha2
thunderxt88	aes, crc, neon, pmuv3, sha2
tsv110	aes, crc, dotprod, dpb, fhm, fp16, lor, lse, neon, pan, pmuv3, ras, rdm, sha2, spe, v8.1a, v8.2a, vh