…buttons visibility

To remove a side effect (process exit) when parsing config.

…c)]`

…gnostic)]`

…anslatable

…agnostic)]`

…agnostic)]`

…nostic)]`

…gnostic)]`

…ostic)]`

The special case was failing to handle invisible delimiters on one path.

Fixes rust-lang#128895.

If another thread calls `set_backtrace_style` while a `get_backtrace_style` is reading the environment variables, `get_backtrace_style` will overwrite the value. Use an atomic CAS to avoid this.

…ouxu,Amanieu,Jubilee

nontemporal_store: make sure that the intrinsic is truly just a hint

The `!nontemporal` flag for stores in LLVM *sounds* like it is just a hint, but actually, it is not -- at least on x86, non-temporal stores need very special treatment by the programmer or else the Rust memory model breaks down. LLVM still treats these stores as-if they were normal stores for optimizations, which is [highly dubious](llvm/llvm-project#64521). Let's avoid all that dubiousness by making our own non-temporal stores be truly just a hint, which is possible on some targets (e.g. ARM). On all other targets, non-temporal stores become regular stores.

~~Blocked on rust-lang/stdarch#1541 propagating to the rustc repo, to make sure the `_mm_stream` intrinsics are unaffected by this change.~~

Fixes rust-lang#114582
Cc `@Amanieu` `@workingjubilee`

…tdoc

Unify run button display with "copy code" button and with mdbook buttons

Follow-up of rust-lang#128339.

It looks like this (coherency++, yeay!):

![Screenshot from 2024-07-30 15-16-31](https://github.com/user-attachments/assets/5e262e5b-f338-4085-94ca-e223033a43db)

Can be tested [here](https://rustdoc.crud.net/imperio/run-button/foo/struct.Bar.html).

r? `@notriddle`

…r=RalfJung,nikic

const vector passed through to codegen

This allows constant vectors using a repr(simd) type to be propagated
through to the backend by reusing the functionality used to do a similar
thing for the simd_shuffle intrinsic

rust-lang#118209

r​? RalfJung

…nieu

std: do not overwrite style in `get_backtrace_style`

If another thread calls `set_backtrace_style` while a `get_backtrace_style` is reading the environment variables, `get_backtrace_style` will overwrite the value. Use an atomic CAS to avoid this.

Slightly refactor `Flags` in bootstrap

The next step for rust-lang#126819 is to track commands executed inside `Config::parse`. This is quite challenging, because (tracked) command execution needs to access some state that is stored inside `Config`, which creates a sort of a chicken-and-egg problem.

I would like to first untangle `Config::parse` a little bit, which is what this PR starts with.

Tracking issue: rust-lang#126819

r? `@onur-ozkan`

…stic, r=nnethercote

Get rid of some `#[allow(rustc::untranslatable_diagnostic)]`

`@rustbot` label +A-translation
cc rust-lang#100717

…s, r=compiler-errors

Fix codegen-units tests that were disabled 8 years ago

I don't know if any of these tests still have value. They were disabled by rust-lang#33890, and we've survived without them for a while. But considering how small this test suite is, maybe it's worth having them.

I also had to add some normalization to the codegen-units tests output. I think the fact that I had to add some underscores how poor our test coverage is.

Fix warnings in rmake tests on `x86_64-unknown-linux-gnu`

r? `@jieyouxu`

This PR fixes some warnings I saw in rmake tests. I didn't deny more warnings in this PR until `@jieyouxu` gives their opinion, but maybe we should actually deny all warnings in `rmake.rs` files?

I've also only looked at non-ignored tests on `x86_64-unknown-linux-gnu`, and denying warnings would require a try build for all targets 😓.

…jieyouxu

Use `assert_matches` around the compiler more

It's a useful assertion, especially since it actually prints out the LHS.

…more, r=compiler-errors

Fix bug in `Parser::look_ahead`.

The special case was failing to handle invisible delimiters on one path.

Fixes (but doesn't close until beta backported) rust-lang#128895.

r? `@davidtwco`