Support compilation outside x86-64

.cargo/config.toml

@@ -1,4 +1,4 @@
-[target.x86_64-apple-darwin]
+[build]
 rustflags = [
   "-C", "link-arg=-undefined",
   "-C", "link-arg=dynamic_lookup",

instant-distance-py/src/lib.rs

@@ -371,10 +371,12 @@ big_array! { BigArray; DIMENSIONS }
 
 impl Point for FloatArray {
     fn distance(&self, rhs: &Self) -> f32 {
+        #[cfg(target_arch = "x86_64")]
+        {
             use std::arch::x86_64::{
                 _mm256_castps256_ps128, _mm256_extractf128_ps, _mm256_fmadd_ps, _mm256_load_ps,
-            _mm256_setzero_ps, _mm256_sub_ps, _mm_add_ps, _mm_add_ss, _mm_cvtss_f32, _mm_fmadd_ps,
-            _mm_load_ps, _mm_movehl_ps, _mm_shuffle_ps, _mm_sub_ps,
+                _mm256_setzero_ps, _mm256_sub_ps, _mm_add_ps, _mm_add_ss, _mm_cvtss_f32,
+                _mm_fmadd_ps, _mm_load_ps, _mm_movehl_ps, _mm_shuffle_ps, _mm_sub_ps,
             };
             debug_assert_eq!(self.0.len() % 8, 4);
 
@@ -403,6 +405,13 @@ impl Point for FloatArray {
                 _mm_cvtss_f32(acc_4x)
             }
         }
+        #[cfg(not(target_arch = "x86_64"))]
+        self.0
+            .iter()
+            .zip(rhs.0.iter())
+            .map(|(&a, &b)| (a - b).powi(2))
+            .sum::<f32>()
+    }
 }
 
 #[derive(Clone, Deserialize, Serialize)]