…late bound regions

… in impls

…x, r=RalfJung

Correct the simd_masked_{load,store} intrinsic docs

Explains the uniform pointer being used for these two operations and how elements are offset from it.

…rt-num, r=dtolnay

Refactor trait implementations in `core::convert::num`.

Tracking issue: rust-lang#120257

Implement conversion traits using generic `NonZero` type, and refactor all macros to use a consistent format/order of parameters.

r? `@dtolnay`

…lment-ice, r=lcnr

Don't ICE when hitting overflow limit in fulfillment loop in next solver

As the title says, let's not ICE when hitting the overflow limit in fulfill. On the other hand, we don't want to treat these as true errors, since it means that whether something is considered a true error or an ambiguity is dependent on overflow handling in the solver, which seems not worth it.

Now that we use the presence of true errors in fulfillment for implicit negative coherence, we especially don't want to tie together coherence and overflow.

I guess I could also drain these errors out of fulfillment and put them into some `ambiguities` storage so we could return them in `select_all_or_error` without having to re-process them every time we call `select_where_possible`. Let me know if that's desired.

r? lcnr

…=oli-obk

Don't use raw parameter types in `find_builder_fn`

We shouldn't really ever be using `EarlyBinder::skip_binder` then performing type equality, since param types will never be equal to other types. When checking compatibility with the signature, we instead create some fresh args.

Fixes rust-lang#121314

Expand weak alias types before collecting constrained/referenced late bound regions + refactorings

Fixes rust-lang#114220.
Follow-up to rust-lang#120780.

r? `@oli-obk`

Fix stray trait mismatch in `resolve_associated_item` for `AsyncFn`

Copy-paste error meant that we were calling `fn_trait_kind_from_def_id` instead of `async_fn_trait_kind_from_def_id`. But turns out we don't even need to do that, since we already matched the trait def id above.

Fixes rust-lang#121306

r? oli-obk

docs: add missing "the" to `str::strip_prefix` doc

Fix rust-lang#121348