Check out struct_target_features

src/lib.rs

@@ -1,5 +1,6 @@
 #![doc = include_str!("../README.md")]
-
+#![allow(incomplete_features)]
+#![feature(target_feature_11, struct_target_features)]
 #![deny(rust_2018_idioms)]
 #![deny(missing_docs)]
 #![cfg_attr(not(feature = "std"), no_std)]

src/xxhash3_64.rs

@@ -476,6 +476,7 @@ impl StripeAccumulator {
     }
 
     #[inline]
+    #[target_feature(from_args)]
     fn process_stripe(
         &mut self,
         vector: impl Vector,
@@ -555,22 +556,6 @@ macro_rules! dispatch {
             $fn_name(scalar::Impl, $($arg_name),*)
         }
 
-        /// # Safety
-        ///
-        /// You must ensure that the CPU has the NEON feature
-        #[inline]
-        #[target_feature(enable = "neon")]
-        #[cfg(all(target_arch = "aarch64", feature = "std"))]
-        unsafe fn do_neon<$($gen),*>($($arg_name : $arg_ty),*) $(-> $ret_ty)?
-        where
-            $($wheres)*
-        {
-            // Safety: The caller has ensured we have the NEON feature
-            unsafe {
-                $fn_name(neon::Impl::new_unchecked(), $($arg_name),*)
-            }
-        }
-
         /// # Safety
         ///
         /// You must ensure that the CPU has the AVX2 feature
@@ -606,7 +591,7 @@ macro_rules! dispatch {
         // Now we invoke the right function
 
         #[cfg(_internal_xxhash3_force_neon)]
-        return unsafe { do_neon($($arg_name),*) };
+        return unsafe { $fn_name(neon::Impl, $($arg_name),*) };
 
         #[cfg(_internal_xxhash3_force_avx2)]
         return unsafe { do_avx2($($arg_name),*) };
@@ -625,7 +610,7 @@ macro_rules! dispatch {
             {
                 if std::arch::is_aarch64_feature_detected!("neon") {
                     // Safety: We just ensured we have the NEON feature
-                    return unsafe { do_neon($($arg_name),*) };
+                    return unsafe { $fn_name(neon::Impl, $($arg_name),*) };
                 }
             }