Macro std::is_aarch64_feature_detected

macro_rules! is_aarch64_feature_detected {
    ("neon") => { ... };
    ("pmull") => { ... };
    ("fp") => { ... };
    ("fp16") => { ... };
    ("sve") => { ... };
    ("crc") => { ... };
    ("lse") => { ... };
    ("lse2") => { ... };
    ("rdm") => { ... };
    ("rcpc") => { ... };
    ("rcpc2") => { ... };
    ("dotprod") => { ... };
    ("tme") => { ... };
    ("fhm") => { ... };
    ("dit") => { ... };
    ("flagm") => { ... };
    ("ssbs") => { ... };
    ("sb") => { ... };
    ("pauth") => { ... };
    ("dpb") => { ... };
    ("dpb2") => { ... };
    ("sve2") => { ... };
    ("sve2-aes") => { ... };
    ("sve2-sm4") => { ... };
    ("sve2-sha3") => { ... };
    ("sve2-bitperm") => { ... };
    ("frintts") => { ... };
    ("i8mm") => { ... };
    ("f32mm") => { ... };
    ("f64mm") => { ... };
    ("bf16") => { ... };
    ("rand") => { ... };
    ("bti") => { ... };
    ("mte") => { ... };
    ("jsconv") => { ... };
    ("fcma") => { ... };
    ("aes") => { ... };
    ("sha2") => { ... };
    ("sha3") => { ... };
    ("sm4") => { ... };
    ("asimd") => { ... };
    ("ras") => { ... };
    ("v8.1a") => { ... };
    ("v8.2a") => { ... };
    ("v8.3a") => { ... };
    ("v8.4a") => { ... };
    ("v8.5a") => { ... };
    ("v8.6a") => { ... };
    ("v8.7a") => { ... };
    ($t : tt,) => { ... };
    ($t : tt) => { ... };
}

🔬 This is a nightly-only experimental API. (stdsimd #27731)

This macro tests, at runtime, whether an aarch64 feature is enabled on aarch64 platforms. Currently most features are only supported on linux-based platforms.

This macro takes one argument which is a string literal of the feature being tested for. The feature names are mostly taken from their FEAT_* definitiions in the ARM Architecture Reference Manual.

Supported arguments

• "asimd" or “neon” - FEAT_AdvSIMD
• "pmull" - FEAT_PMULL
• "fp" - FEAT_FP
• "fp16" - FEAT_FP16
• "sve" - FEAT_SVE
• "crc" - FEAT_CRC
• "lse" - FEAT_LSE
• "lse2" - FEAT_LSE2
• "rdm" - FEAT_RDM
• "rcpc" - FEAT_LRCPC
• "rcpc2" - FEAT_LRCPC2
• "dotprod" - FEAT_DotProd
• "tme" - FEAT_TME
• "fhm" - FEAT_FHM
• "dit" - FEAT_DIT
• "flagm" - FEAT_FLAGM
• "ssbs" - FEAT_SSBS
• "sb" - FEAT_SB
• "pauth" - FEAT_PAuth
• "dpb" - FEAT_DPB
• "dpb2" - FEAT_DPB2
• "sve2" - FEAT_SVE2
• "sve2-aes" - FEAT_SVE2_AES
• "sve2-sm4" - FEAT_SVE2_SM4
• "sve2-sha3" - FEAT_SVE2_SHA3
• "sve2-bitperm" - FEAT_SVE2_BitPerm
• "frintts" - FEAT_FRINTTS
• "i8mm" - FEAT_I8MM
• "f32mm" - FEAT_F32MM
• "f64mm" - FEAT_F64MM
• "bf16" - FEAT_BF16
• "rand" - FEAT_RNG
• "bti" - FEAT_BTI
• "mte" - FEAT_MTE
• "jsconv" - FEAT_JSCVT
• "fcma" - FEAT_FCMA
• "aes" - FEAT_AES
• "sha2" - FEAT_SHA1 & FEAT_SHA256
• "sha3" - FEAT_SHA512 & FEAT_SHA3
• "sm4" - FEAT_SM3 & FEAT_SM4