src/stdsimd/crates/std_detect/src/detect/arch/aarch64.rs

   1 //! Aarch64 run-time features.
   2
   3 /// Checks if `aarch64` feature is enabled.
   4 #[macro_export]
   5 #[unstable(feature = "stdsimd", issue = "27731")]
   6 #[allow_internal_unstable(stdsimd_internal,stdsimd)]
   7 macro_rules! is_aarch64_feature_detected {
   8     ("neon") => {
   9         // FIXME: this should be removed once we rename Aarch64 neon to asimd
  10         cfg!(target_feature = "neon") ||
  11             $crate::detect::check_for($crate::detect::Feature::asimd)
  12     };
  13     ("asimd") => {
  14         cfg!(target_feature = "neon") ||
  15             $crate::detect::check_for($crate::detect::Feature::asimd)
  16     };
  17     ("pmull") => {
  18         cfg!(target_feature = "pmull") ||
  19             $crate::detect::check_for($crate::detect::Feature::pmull)
  20     };
  21     ("fp") => {
  22         cfg!(target_feature = "fp") ||
  23             $crate::detect::check_for($crate::detect::Feature::fp)
  24     };
  25     ("fp16") => {
  26         cfg!(target_feature = "fp16") ||
  27             $crate::detect::check_for($crate::detect::Feature::fp16)
  28     };
  29     ("sve") => {
  30         cfg!(target_feature = "sve") ||
  31             $crate::detect::check_for($crate::detect::Feature::sve)
  32     };
  33     ("crc") => {
  34         cfg!(target_feature = "crc") ||
  35             $crate::detect::check_for($crate::detect::Feature::crc)
  36     };
  37     ("crypto") => {
  38         cfg!(target_feature = "crypto") ||
  39             $crate::detect::check_for($crate::detect::Feature::crypto)
  40     };
  41     ("lse") => {
  42         cfg!(target_feature = "lse") ||
  43             $crate::detect::check_for($crate::detect::Feature::lse)
  44     };
  45     ("rdm") => {
  46         cfg!(target_feature = "rdm") ||
  47             $crate::detect::check_for($crate::detect::Feature::rdm)
  48     };
  49     ("rcpc") => {
  50         cfg!(target_feature = "rcpc") ||
  51             $crate::detect::check_for($crate::detect::Feature::rcpc)
  52     };
  53     ("dotprod") => {
  54         cfg!(target_feature = "dotprod") ||
  55             $crate::detect::check_for($crate::detect::Feature::dotprod)
  56     };
  57     ("ras") => {
  58         compile_error!("\"ras\" feature cannot be detected at run-time")
  59     };
  60     ("v8.1a") => {
  61         compile_error!("\"v8.1a\" feature cannot be detected at run-time")
  62     };
  63     ("v8.2a") => {
  64         compile_error!("\"v8.2a\" feature cannot be detected at run-time")
  65     };
  66     ("v8.3a") => {
  67         compile_error!("\"v8.3a\" feature cannot be detected at run-time")
  68     };
  69     ($t:tt,) => {
  70         is_aarch64_feature_detected!($t);
  71     };
  72     ($t:tt) => { compile_error!(concat!("unknown aarch64 target feature: ", $t)) };
  73 }
  74
  75 /// ARM Aarch64 CPU Feature enum. Each variant denotes a position in a bitset
  76 /// for a particular feature.
  77 ///
  78 /// PLEASE: do not use this, it is an implementation detail subject to change.
  79 #[doc(hidden)]
  80 #[allow(non_camel_case_types)]
  81 #[repr(u8)]
  82 #[unstable(feature = "stdsimd_internal", issue = "0")]
  83 pub enum Feature {
  84     /// ARM Advanced SIMD (ASIMD)
  85     asimd,
  86     /// Polynomial Multiply
  87     pmull,
  88     /// Floating point support
  89     fp,
  90     /// Half-float support.
  91     fp16,
  92     /// Scalable Vector Extension (SVE)
  93     sve,
  94     /// CRC32 (Cyclic Redundancy Check)
  95     crc,
  96     /// Crypto: AES + PMULL + SHA1 + SHA2
  97     crypto,
  98     /// Atomics (Large System Extension)
  99     lse,
 100     /// Rounding Double Multiply (ASIMDRDM)
 101     rdm,
 102     /// Release consistent Processor consistent (RcPc)
 103     rcpc,
 104     /// Vector Dot-Product (ASIMDDP)
 105     dotprod,
 106 }