Auto merge of #149085 - matthiaskrgr:rollup-f8ia15e, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang/rust#147171 (recommend using a HashMap if a HashSet's second generic parameter doesn't implement BuildHasher)
 - rust-lang/rust#147421 (Add check if span is from macro expansion)
 - rust-lang/rust#147521 (Make SIMD intrinsics available in `const`-contexts)
 - rust-lang/rust#148201 (Start documenting autodiff activities)
 - rust-lang/rust#148797 (feat: Add `bit_width` for unsigned `NonZero<T>`)
 - rust-lang/rust#148798 (Match <OsString as Debug>::fmt to that of str)
 - rust-lang/rust#149082 (autodiff: update formating, improve examples for the unstable-book)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

tests/pass/intrinsics/portable-simd.rs

@@ -60,7 +60,7 @@ impl<T: Copy, const N: usize> PackedSimd<T, N> {
 
 #[rustc_intrinsic]
 #[rustc_nounwind]
-pub unsafe fn simd_shuffle_const_generic<T, U, const IDX: &'static [u32]>(x: T, y: T) -> U;
+pub const unsafe fn simd_shuffle_const_generic<T, U, const IDX: &'static [u32]>(x: T, y: T) -> U;
 
 fn simd_ops_f16() {
     use intrinsics::*;