diff --git a/crates/core_arch/src/aarch64/test_support.rs b/crates/core_arch/src/aarch64/test_support.rs
index 9c5994b150..e21cbfd1ed 100644
--- a/crates/core_arch/src/aarch64/test_support.rs
+++ b/crates/core_arch/src/aarch64/test_support.rs
@@ -1,5 +1,5 @@
 use crate::core_arch::{aarch64::neon::*, arm_shared::*, simd::*};
-use std::{i16, i32, i8, mem::transmute, u16, u32, u8, vec::Vec};
+use std::{mem::transmute, vec::Vec};
 
 macro_rules! V_u64 {
     () => {
@@ -23,11 +23,11 @@ macro_rules! V_f64 {
             -1.0f64,
             1.2f64,
             2.4f64,
-            std::f64::MAX,
-            std::f64::MIN,
-            std::f64::INFINITY,
-            std::f64::NEG_INFINITY,
-            std::f64::NAN,
+            f64::MAX,
+            f64::MIN,
+            f64::INFINITY,
+            f64::NEG_INFINITY,
+            f64::NAN,
         ]
     };
 }
diff --git a/crates/core_arch/src/arm_shared/neon/mod.rs b/crates/core_arch/src/arm_shared/neon/mod.rs
index d323ab0634..19bdca228b 100644
--- a/crates/core_arch/src/arm_shared/neon/mod.rs
+++ b/crates/core_arch/src/arm_shared/neon/mod.rs
@@ -10124,7 +10124,7 @@ mod tests {
     use crate::core_arch::arm::*;
     use crate::core_arch::arm_shared::test_support::*;
     use crate::core_arch::simd::*;
-    use std::{i16, i32, i8, mem::transmute, u16, u32, u8, vec::Vec};
+    use std::{mem::transmute, vec::Vec};
     use stdarch_test::simd_test;
 
     #[simd_test(enable = "neon")]
diff --git a/crates/core_arch/src/arm_shared/test_support.rs b/crates/core_arch/src/arm_shared/test_support.rs
index 0776a03717..e2828f8556 100644
--- a/crates/core_arch/src/arm_shared/test_support.rs
+++ b/crates/core_arch/src/arm_shared/test_support.rs
@@ -5,7 +5,7 @@ use crate::core_arch::arm::*;
 use crate::core_arch::aarch64::*;
 
 use crate::core_arch::simd::*;
-use std::{i16, i32, i8, mem::transmute, u16, u32, u8, vec::Vec};
+use std::{mem::transmute, vec::Vec};
 
 macro_rules! V_u8 {
     () => {
@@ -100,11 +100,11 @@ macro_rules! V_f32 {
             -1.0f32,
             1.2f32,
             2.4f32,
-            std::f32::MAX,
-            std::f32::MIN,
-            std::f32::INFINITY,
-            std::f32::NEG_INFINITY,
-            std::f32::NAN,
+            f32::MAX,
+            f32::MIN,
+            f32::INFINITY,
+            f32::NEG_INFINITY,
+            f32::NAN,
         ]
     };
 }
diff --git a/crates/core_arch/src/powerpc/altivec.rs b/crates/core_arch/src/powerpc/altivec.rs
index 3808446b4a..5f8d53d096 100644
--- a/crates/core_arch/src/powerpc/altivec.rs
+++ b/crates/core_arch/src/powerpc/altivec.rs
@@ -4680,7 +4680,7 @@ mod tests {
                 let a: vector_float = transmute(f32x4::new($($a),+));
 
                 let d: vector_float = transmute(f32x4::new($($d),+));
-                let r = transmute(vec_cmple(vec_abs(vec_sub($fn(a), d)), vec_splats(std::f32::EPSILON)));
+                let r = transmute(vec_cmple(vec_abs(vec_sub($fn(a), d)), vec_splats(f32::EPSILON)));
                 let e = m32x4::new(true, true, true, true);
                 assert_eq!(e, r);
             }
@@ -6610,10 +6610,7 @@ mod tests {
         let r8: vector_float = transmute(f32x4::new(0.0, 536870900.0, 536870900.0, 5.25));
 
         let check = |a, b| {
-            let r = transmute(vec_cmple(
-                vec_abs(vec_sub(a, b)),
-                vec_splats(std::f32::EPSILON),
-            ));
+            let r = transmute(vec_cmple(vec_abs(vec_sub(a, b)), vec_splats(f32::EPSILON)));
             let e = m32x4::new(true, true, true, true);
             assert_eq!(e, r);
         };
@@ -6662,10 +6659,7 @@ mod tests {
         let r8: vector_float = transmute(f32x4::new(-268435460.0, 268435460.0, 268435460.0, 5.25));
 
         let check = |a, b| {
-            let r = transmute(vec_cmple(
-                vec_abs(vec_sub(a, b)),
-                vec_splats(std::f32::EPSILON),
-            ));
+            let r = transmute(vec_cmple(vec_abs(vec_sub(a, b)), vec_splats(f32::EPSILON)));
             println!("{:?} {:?}", a, b);
             let e = m32x4::new(true, true, true, true);
             assert_eq!(e, r);
diff --git a/crates/core_arch/src/wasm32/simd128.rs b/crates/core_arch/src/wasm32/simd128.rs
index be18710eb4..03567d8fc6 100644
--- a/crates/core_arch/src/wasm32/simd128.rs
+++ b/crates/core_arch/src/wasm32/simd128.rs
@@ -5646,13 +5646,13 @@ mod tests {
     test_bop!(f32x4[f32; 4] | f32x4_min[f32x4_min_test]:
               ([0., -1., 7., 8.], [1., -3., -4., 10.]) => [0., -3., -4., 8.]);
     test_bop!(f32x4[f32; 4] | f32x4_min[f32x4_min_test_nan]:
-              ([0., -1., 7., 8.], [1., -3., -4., std::f32::NAN])
-              => [0., -3., -4., std::f32::NAN]);
+              ([0., -1., 7., 8.], [1., -3., -4., f32::NAN])
+              => [0., -3., -4., f32::NAN]);
     test_bop!(f32x4[f32; 4] | f32x4_max[f32x4_max_test]:
               ([0., -1., 7., 8.], [1., -3., -4., 10.]) => [1., -1., 7., 10.]);
     test_bop!(f32x4[f32; 4] | f32x4_max[f32x4_max_test_nan]:
-              ([0., -1., 7., 8.], [1., -3., -4., std::f32::NAN])
-              => [1., -1., 7., std::f32::NAN]);
+              ([0., -1., 7., 8.], [1., -3., -4., f32::NAN])
+              => [1., -1., 7., f32::NAN]);
     test_bop!(f32x4[f32; 4] | f32x4_add[f32x4_add_test]:
               ([0., -1., 7., 8.], [1., -3., -4., 10.]) => [1., -4., 3., 18.]);
     test_bop!(f32x4[f32; 4] | f32x4_sub[f32x4_sub_test]:
@@ -5667,13 +5667,13 @@ mod tests {
     test_bop!(f64x2[f64; 2] | f64x2_min[f64x2_min_test]:
                ([0., -1.], [1., -3.]) => [0., -3.]);
     test_bop!(f64x2[f64; 2] | f64x2_min[f64x2_min_test_nan]:
-               ([7., 8.], [-4., std::f64::NAN])
-               => [ -4., std::f64::NAN]);
+               ([7., 8.], [-4., f64::NAN])
+               => [ -4., f64::NAN]);
     test_bop!(f64x2[f64; 2] | f64x2_max[f64x2_max_test]:
                ([0., -1.], [1., -3.]) => [1., -1.]);
     test_bop!(f64x2[f64; 2] | f64x2_max[f64x2_max_test_nan]:
-               ([7., 8.], [ -4., std::f64::NAN])
-               => [7., std::f64::NAN]);
+               ([7., 8.], [ -4., f64::NAN])
+               => [7., f64::NAN]);
     test_bop!(f64x2[f64; 2] | f64x2_add[f64x2_add_test]:
                ([0., -1.], [1., -3.]) => [1., -4.]);
     test_bop!(f64x2[f64; 2] | f64x2_sub[f64x2_sub_test]:
diff --git a/crates/core_arch/src/x86/sha.rs b/crates/core_arch/src/x86/sha.rs
index 90127398cd..144677818a 100644
--- a/crates/core_arch/src/x86/sha.rs
+++ b/crates/core_arch/src/x86/sha.rs
@@ -121,9 +121,7 @@ pub unsafe fn _mm_sha256rnds2_epu32(a: __m128i, b: __m128i, k: __m128i) -> __m12
 #[cfg(test)]
 mod tests {
     use std::{
-        f32,
-        f64::{self, NAN},
-        i32,
+        f32, f64,
         mem::{self, transmute},
     };
 
@@ -133,6 +131,8 @@ mod tests {
     };
     use stdarch_test::simd_test;
 
+    const NAN: f64 = f64::NAN;
+
     #[simd_test(enable = "sha")]
     #[allow(overflowing_literals)]
     unsafe fn test_mm_sha1msg1_epu32() {
diff --git a/crates/core_arch/src/x86/sse.rs b/crates/core_arch/src/x86/sse.rs
index 42bd1da2a0..42d73ee661 100644
--- a/crates/core_arch/src/x86/sse.rs
+++ b/crates/core_arch/src/x86/sse.rs
@@ -2002,11 +2002,13 @@ pub unsafe fn _mm_stream_ps(mem_addr: *mut f32, a: __m128) {
 #[cfg(test)]
 mod tests {
     use crate::{hint::black_box, mem::transmute, ptr};
-    use std::{boxed, f32::NAN};
+    use std::boxed;
     use stdarch_test::simd_test;
 
     use crate::core_arch::{simd::*, x86::*};
 
+    const NAN: f32 = f32::NAN;
+
     #[simd_test(enable = "sse")]
     unsafe fn test_mm_add_ps() {
         let a = _mm_setr_ps(-1.0, 5.0, 0.0, -10.0);
diff --git a/crates/core_arch/src/x86/sse2.rs b/crates/core_arch/src/x86/sse2.rs
index 58a999a88d..c6273cfc13 100644
--- a/crates/core_arch/src/x86/sse2.rs
+++ b/crates/core_arch/src/x86/sse2.rs
@@ -3046,14 +3046,14 @@ mod tests {
         hint::black_box,
     };
     use std::{
-        boxed, f32,
-        f64::{self, NAN},
-        i32,
+        boxed, f32, f64,
         mem::{self, transmute},
         ptr,
     };
     use stdarch_test::simd_test;
 
+    const NAN: f64 = f64::NAN;
+
     #[test]
     fn test_mm_pause() {
         unsafe { _mm_pause() }