… external crate

Adapt for the LLVM API changes from
llvm/llvm-project@721f975#diff-5a347903b8412ed1b1b1948c3fce47f9a6ff05dc70bfaeedb6d06b622e399d91.

`display: block` is the [default UA style] for dt.

[default UA style]: https://html.spec.whatwg.org/multipage/rendering.html#lists

Previously an exact match of the `instruction_set` attribute was required for an MIR inline to be considered. This change checks for an exact match *only* if the callee sets an `instruction_set` in the first place. When the callee does not declare an instruction set then it is considered to be platform agnostic code and it's allowed to be inline'd into the caller.

…set-missing-on-callee, r=tmiasko

Refine `instruction_set` MIR inline rules

Previously an exact match of the `instruction_set` attribute was required for an MIR inline to be considered. This change checks for an exact match *only* if the callee sets an `instruction_set` in the first place. When the callee does not declare an instruction set then it is considered to be platform agnostic code and it's allowed to be inline'd into the caller.

cc ``@oli-obk``

[Edit] Zulip Context: https://rust-lang.zulipchat.com/#narrow/stream/189540-t-compiler.2Fwg-mir-opt/topic/What.20exactly.20does.20the.20MIR.20optimizer.20do.3F

Unsupported query error now specifies if its unsupported for local or external crate

Fixes rust-lang#101666.
I had to move `keys.rs` from `rustc_query_impl` to `rustc_middle`. I don't know if that is problematic. I couldn't think of any other way to get the needed information inside `rustc_middle`.

r? ```@jyn514```

…n, r=scottmcm

improve array_from_fn documenation

Improves array::from_fn documentation
Fixes rust-lang#102609

There were also unresolved comments from [this PR rust-lang#100462](rust-lang#100462), which have been added to my PR

[llvm-wrapper] adapt for LLVM API change

Adapt for the LLVM API changes from llvm/llvm-project@721f975.

Found via our experimental rust + llvm @ HEAD bot: https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/15203#0184ae73-5169-4b9b-92f4-d4e6e9b86ad9/194-531

…llaumeGomez

rustdoc: remove no-op CSS `#help dt { display: block }`

`display: block` is the [default UA style] for dt.

[default UA style]: https://html.spec.whatwg.org/multipage/rendering.html#lists

…x, r=compiler-errors

Remove AscribeUserTypeCx

r? ``@compiler-errors``

This basically inlines `AscribeUserTypeCx::relate_mir_and_user_ty` into `type_op_ascribe_user_type_with_span` which is the only place where it's used and makes direct use of `ObligationCtxt` API.