On big-endian the values need to be right-aligned within a 64-bit register, as if the value had been read with a 64-bit load instruction.

Rationale:

  - `abort()` lowers to `wasm32::unreachable()` anyway.
  - `abort()` isn't `unsafe`.
  - `abort()` matches the comment better.
  - `abort()` avoids confusion by future readers (e.g.
    rust-lang#81527): the naming of wasm's
    `unreachable' instruction is a bit unfortunate because it is not
    related to the `unreachable()` intrinsic (intended to trigger UB).

Codegen is likely to be different since `unreachable()` is `inline`
while `abort()` is `cold`. Since it doesn't look like we are expecting
here to trigger this case, the latter seems better anyway.

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

This patch adds doc aliases for "delete". The added aliases are
supposed to reference usages `delete` in other programming
languages.

- `HashMap::remove`, `BTreeMap::remove` -> `Map#delete` and `delete`
  keyword in JavaScript.

- `HashSet::remove`, `BTreeSet::remove` -> `Set#delete` in JavaScript.

- `mem::drop` -> `delete` keyword in C++.

- `fs::remove_file`, `fs::remove_dir`, `fs::remove_dir_all`
  -> `File#delete` in Java, `File#delete` and `Dir#delete` in Ruby.

Before this change, searching for "delete" in documentation
returned no results.

…>>` later on

The span of `panic!` produced by the `assert` macro did not carry the
right edition. This changes `assert` to call the right version.

Scalars can represent integers up to u128, but the docs state otherwise.

Previously, it's not clear what exactly should be added in the suggested where clause,
so this adds an example to demonstrate.

Editorconfig is a lightweight specification that
helps maintaining consistent coding/formatting style
accross editors, especially those editors
that are not explicitly aware of Rust and rustfmt.

https://editorconfig.org/

Upgrade Chalk

~~Blocked on rust-lang/chalk#670~~
~~Now blocked on rust-lang/chalk#680 and release~~

In addition to the straight upgrade, I also tried to fix some tests by properly returning variables and max universes in the solution. Unfortunately, this actually triggers the same perf problem that rustc traits code runs into in `canonicalizer`. Not sure what the root cause of this problem is, or why it's supposed to be solved in chalk.

r? ```@nikomatsakis```

…Simulacrum

Add .editorconfig

This adds a .editorconfig file to rust-lang/rust, matching Clippy's. It's not clear that this will benefit many people, but the cost is low and the rewards are potentially meaningful.

Add AArch64 big-endian and ILP32 targets

This PR adds 3 new AArch64 targets:
- `aarch64_be-unknown-linux-gnu`
- `aarch64-unknown-linux-gnu_ilp32`
- `aarch64_be-unknown-linux-gnu_ilp32`

It also fixes some ABI issues on big-endian ARM and AArch64.

Remove remnants of the santizer runtime crates from bootstrap

…32-unreachable, r=Mark-Simulacrum

sys: use `process::abort()` instead of `arch::wasm32::unreachable()`

Rationale:

  - `abort()` lowers to `wasm32::unreachable()` anyway.
  - `abort()` isn't `unsafe`.
  - `abort()` matches the comment better.
  - `abort()` avoids confusion by future readers (e.g. rust-lang#81527): the naming of wasm's `unreachable` instruction is a bit unfortunate because it is not related to the `unreachable()` intrinsic (intended to trigger UB).

Codegen is likely to be different since `unreachable()` is `inline` while `abort()` is `cold`. Since it doesn't look like we are expecting here to trigger this case, the latter seems better anyway.

Add better diagnostic for unbounded Abst. Const

~~In the case where a generic abst. const requires a trivial where bound: `where TypeWithConst<const_fn(N)>: ,`,
instead of requiring a where bound, just check that only consts are being substituted in to skip over where check.~~

~~This is pretty sketchy, but I think it works. Presumably, if there is checking for type bounds added later, it can first check nested requirements, and see if they're satisfied by the current `ParamEnv`.~~

Changed the diagnostic to add a better example, which is more practical than what was previously proposed.

r? ```@lcnr```

…acrum

Add doc aliases for "delete"

This patch adds doc aliases for "delete". The added aliases are supposed to reference usages `delete` in other programming languages.

- `HashMap::remove`, `BTreeMap::remove` -> `Map#delete` and `delete` keyword in JavaScript.

- `HashSet::remove`, `BTreeSet::remove` -> `Set#delete` in JavaScript.

- `mem::drop` -> `delete` keyword in C++.

- `fs::remove_file`, `fs::remove_dir`, `fs::remove_dir_all`-> `File#delete` in Java, `File#delete` and `Dir#delete` in Ruby.

Before this change, searching for "delete" in documentation returned no results.

…ulacrum

rustbuild: Don't build compiler twice for error-index-generator.

When using `--stage=1`, the error-index-generator was forcing the compiler to be built twice.  This isn't necessary; the error-index-generator just needs the same unusual logic that rustdoc uses to build with stage minus one.

`--stage=0` and `--stage=2` should be unaffected by this change.

cc rust-lang#76371

…planation-e0521, r=GuillaumeGomez

Add long explanation e0521

Helps with rust-lang#61137

Directly use `Option<&[T]>` instead of converting from `Option<&Vec<T>>` later on

```@rustbot``` modify labels +C-cleanup +T-compiler

…nkov

Fix bug with assert!() calling the wrong edition of panic!().

The span of `panic!` produced by the `assert` macro did not carry the right edition. This changes `assert` to call the right version.

Also adds tests for the 2021 edition of panic and assert, that would've caught this.

…ewording, r=estebank

Improve wording of suggestion about accessing field

Follow-up to rust-lang#81504

The compiler at this moment suggests "you might have meant to use field `b` of type `B`", sounding like it's type `B` which has the field `b`.
r? ```@estebank```

Fix out of date `Scalar` documentation

Scalars can represent integers up to `u128`, but the docs state otherwise.

Add more associated type tests

Closes rust-lang#24159
Closes rust-lang#37808
Closes rust-lang#39532
Closes rust-lang#37883

r? ``@estebank``