diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs
index 97add8f2c6a..1ab7481b7ba 100644
--- a/library/core/src/lib.rs
+++ b/library/core/src/lib.rs
@@ -412,12 +412,10 @@ pub mod arch {
 #[allow(missing_debug_implementations, dead_code, unsafe_op_in_unsafe_fn, unused_unsafe)]
 #[allow(rustdoc::bare_urls)]
 #[unstable(feature = "portable_simd", issue = "86656")]
-#[cfg(not(all(miri, doctest)))] // Skip SIMD doctests in Miri
 mod core_simd;
 
 #[doc = include_str!("../../portable-simd/crates/core_simd/src/core_simd_docs.md")]
 #[unstable(feature = "portable_simd", issue = "86656")]
-#[cfg(not(all(miri, doctest)))] // Skip SIMD doctests in Miri
 pub mod simd {
     #[unstable(feature = "portable_simd", issue = "86656")]
     pub use crate::core_simd::simd::*;
diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index 166b3434372..32d8988f149 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -16,7 +16,6 @@
 use crate::ptr;
 use crate::result::Result;
 use crate::result::Result::{Err, Ok};
-#[cfg(not(all(miri, doctest)))] // Miri skips SIMD doctests
 use crate::simd::{self, Simd};
 use crate::slice;
 
@@ -3544,7 +3543,6 @@ pub unsafe fn align_to_mut<U>(&mut self) -> (&mut [T], &mut [U], &mut [T]) {
     /// assert_eq!(basic_simd_sum(&numbers[1..99]), 4949.0);
     /// ```
     #[unstable(feature = "portable_simd", issue = "86656")]
-    #[cfg(not(all(miri, doctest)))] // Miri skips SIMD doctests
     pub fn as_simd<const LANES: usize>(&self) -> (&[T], &[Simd<T, LANES>], &[T])
     where
         Simd<T, LANES>: AsRef<[T; LANES]>,
@@ -3588,7 +3586,6 @@ pub fn as_simd<const LANES: usize>(&self) -> (&[T], &[Simd<T, LANES>], &[T])
     /// be lifted in a way that would make it possible to see panics from this
     /// method for something like `LANES == 3`.
     #[unstable(feature = "portable_simd", issue = "86656")]
-    #[cfg(not(all(miri, doctest)))] // Miri skips SIMD doctests
     pub fn as_simd_mut<const LANES: usize>(&mut self) -> (&mut [T], &mut [Simd<T, LANES>], &mut [T])
     where
         Simd<T, LANES>: AsMut<[T; LANES]>,
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
index ad3b8cd5c43..a464f2d4c74 100644
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@@ -501,10 +501,8 @@
 #[allow(missing_debug_implementations, dead_code, unsafe_op_in_unsafe_fn, unused_unsafe)]
 #[allow(rustdoc::bare_urls)]
 #[unstable(feature = "portable_simd", issue = "86656")]
-#[cfg(not(all(miri, doctest)))] // Miri does not support all SIMD intrinsics
 mod std_float;
 
-#[cfg(not(all(miri, doctest)))] // Miri does not support all SIMD intrinsics
 #[doc = include_str!("../../portable-simd/crates/core_simd/src/core_simd_docs.md")]
 #[unstable(feature = "portable_simd", issue = "86656")]
 pub mod simd {