Auto merge of #158455 - JonathanBrouwer:rollup-3fPbHms, r=JonathanBrouwer

Rollup of 15 pull requests

Successful merges:

 - rust-lang/rust#153697 (Add arg splat experiment initial tuple impl)
 - rust-lang/rust#158360 (Various borrowck cleanups and param_env/opaque_types_defined_by query simplifications for typeck children)
 - rust-lang/rust#158438 (Use rigidness marker in fast_reject)
 - rust-lang/rust#157127 (cg_LLVM: Stop needing an alloca for volatile loads)
 - rust-lang/rust#158376 (Suggest `>=` for `=>` typo in closure and call argument positions)
 - rust-lang/rust#158185 (perf: Make stable_crate_ids reads lock-free after crate loading)
 - rust-lang/rust#158244 (Attribute docs `deprecated` , `warn`, `allow`, `cfg`, `deny`, and `forbid` )
 - rust-lang/rust#158355 (Fixup the refactoring errors in rust-lang/rust#156246)
 - rust-lang/rust#158361 (Move `check_ffi_pure` into the attribute parser)
 - rust-lang/rust#158382 (Add safety section for SliceIndex::get_unchecked(mut))
 - rust-lang/rust#158399 (std: truncate thread names on NetBSD)
 - rust-lang/rust#158418 (Eliminate double length check in `Vec::into_array`)
 - rust-lang/rust#158430 (Guard clone suggestion against empty obligation errors)
 - rust-lang/rust#158446 (Update Enzyme submodule)
 - rust-lang/rust#158448 (Cleanup `NumBuffer` comment and replace `ilog(10)` with `ilog10()`)

Author: bors