| //! Aarch64 run-time features. |
| |
| /// Checks if `aarch64` feature is enabled. |
| #[macro_export] |
| #[unstable(feature = "stdsimd", issue = "27731")] |
| #[allow_internal_unstable(stdsimd_internal,stdsimd)] |
| macro_rules! is_aarch64_feature_detected { |
| ("neon") => { |
| // FIXME: this should be removed once we rename Aarch64 neon to asimd |
| cfg!(target_feature = "neon") || |
| $crate::detect::check_for($crate::detect::Feature::asimd) |
| }; |
| ("asimd") => { |
| cfg!(target_feature = "neon") || |
| $crate::detect::check_for($crate::detect::Feature::asimd) |
| }; |
| ("pmull") => { |
| cfg!(target_feature = "pmull") || |
| $crate::detect::check_for($crate::detect::Feature::pmull) |
| }; |
| ("fp") => { |
| cfg!(target_feature = "fp") || |
| $crate::detect::check_for($crate::detect::Feature::fp) |
| }; |
| ("fp16") => { |
| cfg!(target_feature = "fp16") || |
| $crate::detect::check_for($crate::detect::Feature::fp16) |
| }; |
| ("sve") => { |
| cfg!(target_feature = "sve") || |
| $crate::detect::check_for($crate::detect::Feature::sve) |
| }; |
| ("crc") => { |
| cfg!(target_feature = "crc") || |
| $crate::detect::check_for($crate::detect::Feature::crc) |
| }; |
| ("crypto") => { |
| cfg!(target_feature = "crypto") || |
| $crate::detect::check_for($crate::detect::Feature::crypto) |
| }; |
| ("lse") => { |
| cfg!(target_feature = "lse") || |
| $crate::detect::check_for($crate::detect::Feature::lse) |
| }; |
| ("rdm") => { |
| cfg!(target_feature = "rdm") || |
| $crate::detect::check_for($crate::detect::Feature::rdm) |
| }; |
| ("rcpc") => { |
| cfg!(target_feature = "rcpc") || |
| $crate::detect::check_for($crate::detect::Feature::rcpc) |
| }; |
| ("dotprod") => { |
| cfg!(target_feature = "dotprod") || |
| $crate::detect::check_for($crate::detect::Feature::dotprod) |
| }; |
| ("ras") => { |
| compile_error!("\"ras\" feature cannot be detected at run-time") |
| }; |
| ("v8.1a") => { |
| compile_error!("\"v8.1a\" feature cannot be detected at run-time") |
| }; |
| ("v8.2a") => { |
| compile_error!("\"v8.2a\" feature cannot be detected at run-time") |
| }; |
| ("v8.3a") => { |
| compile_error!("\"v8.3a\" feature cannot be detected at run-time") |
| }; |
| ($t:tt,) => { |
| is_aarch64_feature_detected!($t); |
| }; |
| ($t:tt) => { compile_error!(concat!("unknown aarch64 target feature: ", $t)) }; |
| } |
| |
| /// ARM Aarch64 CPU Feature enum. Each variant denotes a position in a bitset |
| /// for a particular feature. |
| /// |
| /// PLEASE: do not use this, it is an implementation detail subject to change. |
| #[doc(hidden)] |
| #[allow(non_camel_case_types)] |
| #[repr(u8)] |
| #[unstable(feature = "stdsimd_internal", issue = "0")] |
| pub enum Feature { |
| /// ARM Advanced SIMD (ASIMD) |
| asimd, |
| /// Polynomial Multiply |
| pmull, |
| /// Floating point support |
| fp, |
| /// Half-float support. |
| fp16, |
| /// Scalable Vector Extension (SVE) |
| sve, |
| /// CRC32 (Cyclic Redundancy Check) |
| crc, |
| /// Crypto: AES + PMULL + SHA1 + SHA2 |
| crypto, |
| /// Atomics (Large System Extension) |
| lse, |
| /// Rounding Double Multiply (ASIMDRDM) |
| rdm, |
| /// Release consistent Processor consistent (RcPc) |
| rcpc, |
| /// Vector Dot-Product (ASIMDDP) |
| dotprod, |
| } |