Windows: Use futex implementation for `Once`
Keep the queue implementation for win7.
Inspired by PR #121956
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`uname -m` on Linux reports `aarch64`, but on MacOS reports `arm64`.
Commonize this to `aarch64`.
With this fix, it is now possible to run aarch64 CI docker images on Arm
MacOS.
Reorganize the `run-make-support` library
The `run_make_support` library has a kitchen sink `lib.rs` that make discovery/learning very difficult. Let's try to improve that by breaking up `lib.rs` into smaller more organized modules. This is a precursor to improving the documentation and learnability of the `run_make_support` library.
### Changes
- Breakup `lib.rs` into smaller modules according to functionality
- Rename `recursive_diff` -> `assert_dirs_are_equal`
- Rename one of the `read_dir` with callback interface as `read_dir_entries`
- Coalesced fs-related stuff onto a `fs` module, re-exported to tests as `rfs`
- Minor doc improvements / fixes in a few places (I have a follow-up documentation PR planned)
This PR is best reviewed commit-by-commit.
r? `@Kobzol` (or Mark, or T-compiler or T-bootstrap)
try-job: x86_64-msvc
try-job: aarch64-apple
try-job: test-various
try-job: armhf-gnu
try-job: dist-x86_64-linux
In llvm/llvm-project@f0eb5587ce all
support for 3DNow! intrinsics and instructions were removed. Per the commit message
there, only AMD chips between 1998 and 2011 or so actually supported
these instructions, and they were effectively replaced by SSE which was
available on many more chips. I'd be very surprised if anyone had ever
used these from Rust.
Remove invalid further restricting suggestion for type bound
This PR partially addresses #127555, it will remove the obvious error suggestion:
```console
| ^^^^ required by this bound in `<Baz as Foo>::bar`
help: consider further restricting this bound
|
12 | F: FnMut() + Send + std::marker::Send,
| +++++++++++++++++++
```
I may create another PR to get a better diagnostic for `impl has stricter requirements than trait` scenario.
Don't use implicit features in `Cargo.toml` in `compiler/`
Fixes compiler crates to stop using implicit features (https://github.com/rust-lang/cargo/issues/12826) which are denied in in edition 2024.
Solve a error `.clone()` suggestion when moving a mutable reference
If the moved value is a mut reference, it is used in a generic function and it's type is a generic param, suggest it can be reborrowed to avoid moving.
for example:
```rust
struct Y(u32);
// x's type is '& mut Y' and it is used in `fn generic<T>(x: T) {}`.
fn generic<T>(x: T) {}
```
fixes#127285
MIR building: Stop using `unpack!` for `BlockAnd<()>`
This is a subset of #127416, containing only the parts related to `BlockAnd<()>`.
The first patch removes the non-assigning form of the `unpack!` macro, because it is frustratingly inconsistent with the main form. We can replace it with an ordinary method that discards the `()` and returns the block.
The second patch then finds all of the remaining code that was using `unpack!` with `BlockAnd<()>`, and updates it to use that new method instead.
---
Changes since original review of #127416:
- Renamed `fn unpack_block` → `fn into_block`
- Removed `fn unpack_discard`, replacing it with `let _: BlockAnd<()> = ...` (2 occurrences)
- Tweaked `arm_end_blocks` to unpack earlier and build `Vec<BasicBlock>` instead of `Vec<BlockAnd<()>>`
Move a few intrinsics to Rust abi
Move a few more intrinsic functions to the convention added in #121192. In the second commit, I added documentation about their safety requirements. Let me know if you would like me to move the second commit to a different PR.
Note: I kept the same signature of `pref_align_of`, but I was wondering why this function is considered unsafe?
Use ordinal number in argument error
Add an ordinal number to two argument errors ("unexpected" and "missing") for ease of understanding error.
```
error[E0061]: this function takes 3 arguments but 2 arguments were supplied
--> test.rs:11:5
|
11 | f(42, 'a');
| ^ --- 2nd argument of type `f32` is missing
|
(snip)
error[E0061]: this function takes 3 arguments but 4 arguments were supplied
--> test.rs:12:5
|
12 | f(42, 42, 1.0, 'a');
| ^ ----
| | |
| | unexpected 2nd argument of type `{integer}`
| help: remove the extra argument
```
To get an ordinal number, I copied `ordinalize` from other crate `rustc_resolve` because I think it is too much to link `rustc_resolve` for this small function. Please let me know if there is a better way.
There were *two* `read_dir` helpers, one being a simple
`std::fs::read_dir` wrapper, the other has a different callback-based
signature. We also rename the callback-based `read_dir` as
`read_dir_entries`.
Also don't top-level re-export most `fs::*` helpers.
