clippy: Some simple clippy fixes.

crates/core_arch/src/aarch64/tme.rs

@@ -21,9 +21,9 @@ extern "unadjusted" {
     #[link_name = "llvm.aarch64.tstart"]
     fn aarch64_tstart() -> u64;
     #[link_name = "llvm.aarch64.tcommit"]
-    fn aarch64_tcommit() -> ();
+    fn aarch64_tcommit();
     #[link_name = "llvm.aarch64.tcancel"]
-    fn aarch64_tcancel(imm0: u64) -> ();
+    fn aarch64_tcancel(imm0: u64);
     #[link_name = "llvm.aarch64.ttest"]
     fn aarch64_ttest() -> u64;
 }

crates/core_arch/src/wasm32/relaxed_simd.rs

@@ -307,7 +307,7 @@ mod tests {
     use super::super::simd128::*;
     use super::*;
     use core::ops::{Add, Div, Mul, Neg, Sub};
-    use std;
+
     use std::fmt::Debug;
     use std::mem::transmute;
     use std::num::Wrapping;

crates/core_arch/src/wasm32/simd128.rs

@@ -3202,7 +3202,7 @@ pub fn i32x4_shr(a: v128, amt: u32) -> v128 {
 #[doc(alias("i32x4.shr_u"))]
 #[stable(feature = "wasm_simd", since = "1.54.0")]
 pub fn u32x4_shr(a: v128, amt: u32) -> v128 {
-    unsafe { simd_shr(a.as_u32x4(), simd::u32x4::splat(amt as u32)).v128() }
+    unsafe { simd_shr(a.as_u32x4(), simd::u32x4::splat(amt)).v128() }
 }
 
 /// Adds two 128-bit vectors as if they were two packed four 32-bit integers.
@@ -4229,7 +4229,7 @@ pub fn f64x2_promote_low_f32x4(a: v128) -> v128 {
 mod tests {
     use super::*;
     use core::ops::{Add, Div, Mul, Neg, Sub};
-    use std;
+
     use std::fmt::Debug;
     use std::mem::transmute;
     use std::num::Wrapping;
@@ -4577,8 +4577,8 @@ mod tests {
                     u8::MAX.into(),
                 ),
                 i16x8(
-                    i16::MIN.into(),
-                    i16::MAX.into(),
+                    i16::MIN,
+                    i16::MAX,
                     u16::MIN as i16,
                     u16::MAX as i16,
                     0,
@@ -4603,8 +4603,8 @@ mod tests {
                     u8::MAX.into(),
                 ),
                 i16x8(
-                    i16::MIN.into(),
-                    i16::MAX.into(),
+                    i16::MIN,
+                    i16::MAX,
                     u16::MIN as i16,
                     u16::MAX as i16,
                     0,
@@ -4624,25 +4624,15 @@ mod tests {
         compare_bytes(
             i16x8_narrow_i32x4(
                 i32x4(0, -1, i16::MIN.into(), i16::MAX.into()),
-                i32x4(
-                    i32::MIN.into(),
-                    i32::MAX.into(),
-                    u32::MIN as i32,
-                    u32::MAX as i32,
-                ),
+                i32x4(i32::MIN, i32::MAX, u32::MIN as i32, u32::MAX as i32),
             ),
             i16x8(0, -1, i16::MIN, i16::MAX, i16::MIN, i16::MAX, 0, -1),
         );
 
         compare_bytes(
             u16x8_narrow_i32x4(
                 i32x4(u16::MAX.into(), -1, i16::MIN.into(), i16::MAX.into()),
-                i32x4(
-                    i32::MIN.into(),
-                    i32::MAX.into(),
-                    u32::MIN as i32,
-                    u32::MAX as i32,
-                ),
+                i32x4(i32::MIN, i32::MAX, u32::MIN as i32, u32::MAX as i32),
             ),
             i16x8(-1, 0, 0, i16::MAX, 0, -1, 0, 0),
         );

crates/core_arch/src/x86/avx.rs

@@ -1519,7 +1519,7 @@ pub unsafe fn _mm256_loadu_si256(mem_addr: *const __m256i) -> __m256i {
 }
 
 /// Stores 256-bits of integer data from `a` into memory.
-/// 	`mem_addr` does not need to be aligned on any particular boundary.
+/// `mem_addr` does not need to be aligned on any particular boundary.
 ///
 /// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm256_storeu_si256)
 #[inline]