diff --git a/simd/src/arm/mod.rs b/simd/src/arm/mod.rs
index de85a679..deed1b7e 100644
--- a/simd/src/arm/mod.rs
+++ b/simd/src/arm/mod.rs
@@ -10,6 +10,7 @@
 
 use std::arch::aarch64::{self, float32x2_t, float32x4_t, int32x2_t, int32x4_t};
 use std::arch::aarch64::{uint32x2_t, uint32x4_t};
+use std::intrinsics::simd::*;
 use std::f32;
 use std::fmt::{self, Debug, Formatter};
 use std::mem;
@@ -869,33 +870,6 @@ impl Index<usize> for U32x4 {
     }
 }
 
-// Intrinsics
-
-extern "platform-intrinsic" {
-    fn simd_add<T>(x: T, y: T) -> T;
-    fn simd_div<T>(x: T, y: T) -> T;
-    fn simd_mul<T>(x: T, y: T) -> T;
-    fn simd_sub<T>(x: T, y: T) -> T;
-
-    fn simd_shr<T>(x: T, y: T) -> T;
-
-    fn simd_and<T>(x: T, y: T) -> T;
-    fn simd_or<T>(x: T, y: T) -> T;
-    fn simd_xor<T>(x: T, y: T) -> T;
-
-    fn simd_fmin<T>(x: T, y: T) -> T;
-    fn simd_fmax<T>(x: T, y: T) -> T;
-
-    fn simd_eq<T, U>(x: T, y: T) -> U;
-    fn simd_gt<T, U>(x: T, y: T) -> U;
-    fn simd_le<T, U>(x: T, y: T) -> U;
-    fn simd_lt<T, U>(x: T, y: T) -> U;
-
-    fn simd_shuffle<T, I, U>(x: T, y: T, idx: I) -> U;
-
-    fn simd_cast<T, U>(x: T) -> U;
-}
-
 extern "C" {
     #[link_name = "llvm.fabs.v2f32"]
     fn fabs_v2f32(a: float32x2_t) -> float32x2_t;
diff --git a/simd/src/lib.rs b/simd/src/lib.rs
index a05817f2..4759d883 100644
--- a/simd/src/lib.rs
+++ b/simd/src/lib.rs
@@ -8,7 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![cfg_attr(pf_rustc_nightly, feature(link_llvm_intrinsics, platform_intrinsics))]
+#![cfg_attr(pf_rustc_nightly, allow(internal_features))]
+#![cfg_attr(pf_rustc_nightly, feature(link_llvm_intrinsics, core_intrinsics))]
 #![cfg_attr(all(target_arch = "aarch64", pf_rustc_nightly), feature(stdarch_arm_crc32))]
 #![cfg_attr(pf_rustc_nightly, feature(simd_ffi))]