| Age | Commit message (Collapse) | Author | Lines |
|---|
|
Fixes #132564
|
|
better test for const HashMap; remove const_hash leftovers
The existing `const_with_hasher` test is kind of silly since the HashMap it constructs can never contain any elements. So this adjusts the test to construct a usable HashMap, which is a bit non-trivial since the default hash builder cannot be built in `const`. `BuildHasherDefault::new()` helps but is unstable (https://github.com/rust-lang/rust/issues/123197), so we also have a test that does not involve that type.
The second commit removes the last remnants of https://github.com/rust-lang/rust/issues/104061, since they aren't actually useful -- without const traits, you can't do any hashing in `const`.
Cc ``@rust-lang/libs-api`` ``@rust-lang/wg-const-eval``
Closes #104061
Related to https://github.com/rust-lang/rust/issues/102575
|
|
|
|
|
|
|
|
Remove the `Arc` rt::init allocation for thread info
Removes an allocation pre-main by just not storing anything in std::thread::Thread for the main thread.
- The thread name can just be a hard coded literal, as was done in #123433.
- Storing ThreadId and Parker in a static that is initialized once at startup. This uses SyncUnsafeCell and MaybeUninit as this is quite performance critical and we don't need synchronization or to store a tag value and possibly leave in a panic.
|
|
|
|
|
|
|
|
Make some float methods unstable `const fn`
Some float methods are now `const fn` under the `const_float_methods` feature gate.
I also made some unstable methods `const fn`, keeping their constness under their respective feature gate.
In order to support `min`, `max`, `abs` and `copysign`, the implementation of some intrinsics had to be moved from Miri to rustc_const_eval (cc `@RalfJung).`
Tracking issue: https://github.com/rust-lang/rust/issues/130843
```rust
impl <float> {
// #[feature(const_float_methods)]
pub const fn recip(self) -> Self;
pub const fn to_degrees(self) -> Self;
pub const fn to_radians(self) -> Self;
pub const fn max(self, other: Self) -> Self;
pub const fn min(self, other: Self) -> Self;
pub const fn clamp(self, min: Self, max: Self) -> Self;
pub const fn abs(self) -> Self;
pub const fn signum(self) -> Self;
pub const fn copysign(self, sign: Self) -> Self;
// #[feature(float_minimum_maximum)]
pub const fn maximum(self, other: Self) -> Self;
pub const fn minimum(self, other: Self) -> Self;
// Only f16/f128 (f32/f64 already const)
pub const fn is_sign_positive(self) -> bool;
pub const fn is_sign_negative(self) -> bool;
pub const fn next_up(self) -> Self;
pub const fn next_down(self) -> Self;
}
```
r? libs-api
try-job: dist-s390x-linux
|
|
Some float methods are now `const fn` under the `const_float_methods` feature gate.
In order to support `min`, `max`, `abs` and `copysign`, the implementation of some intrinsics had to be moved from Miri to rustc_const_eval.
|
|
Autodiff Upstreaming - enzyme frontend
This is an upstream PR for the `autodiff` rustc_builtin_macro that is part of the autodiff feature.
For the full implementation, see: https://github.com/rust-lang/rust/pull/129175
**Content:**
It contains a new `#[autodiff(<args>)]` rustc_builtin_macro, as well as a `#[rustc_autodiff]` builtin attribute.
The autodiff macro is applied on function `f` and will expand to a second function `df` (name given by user).
It will add a dummy body to `df` to make sure it type-checks. The body will later be replaced by enzyme on llvm-ir level,
we therefore don't really care about the content. Most of the changes (700 from 1.2k) are in `compiler/rustc_builtin_macros/src/autodiff.rs`, which expand the macro. Nothing except expansion is implemented for now.
I have a fallback implementation for relevant functions in case that rustc should be build without autodiff support. The default for now will be off, although we want to flip it later (once everything landed) to on for nightly. For the sake of CI, I have flipped the defaults, I'll revert this before merging.
**Dummy function Body:**
The first line is an `inline_asm` nop to make inlining less likely (I have additional checks to prevent this in the middle end of rustc. If `f` gets inlined too early, we can't pass it to enzyme and thus can't differentiate it.
If `df` gets inlined too early, the call site will just compute this dummy code instead of the derivatives, a correctness issue. The following black_box lines make sure that none of the input arguments is getting optimized away before we replace the body.
**Motivation:**
The user facing autodiff macro can verify the user input. Then I write it as args to the rustc_attribute, so from here on I can know that these values should be sensible. A rustc_attribute also turned out to be quite nice to attach this information to the corresponding function and carry it till the backend.
This is also just an experiment, I expect to adjust the user facing autodiff macro based on user feedback, to improve usability.
As a simple example of what this will do, we can see this expansion:
From:
```
#[autodiff(df, Reverse, Duplicated, Const, Active)]
pub fn f1(x: &[f64], y: f64) -> f64 {
unimplemented!()
}
```
to
```
#[rustc_autodiff]
#[inline(never)]
pub fn f1(x: &[f64], y: f64) -> f64 {
::core::panicking::panic("not implemented")
}
#[rustc_autodiff(Reverse, Duplicated, Const, Active,)]
#[inline(never)]
pub fn df(x: &[f64], dx: &mut [f64], y: f64, dret: f64) -> f64 {
unsafe { asm!("NOP"); };
::core::hint::black_box(f1(x, y));
::core::hint::black_box((dx, dret));
::core::hint::black_box(f1(x, y))
}
```
I will add a few more tests once I figured out why rustc rebuilds every time I touch a test.
Tracking:
- https://github.com/rust-lang/rust/issues/124509
try-job: dist-x86_64-msvc
|
|
|
|
Co-authored-by: Lorenz Schmidt <bytesnake@mailbox.org>
|
|
|
|
|
|
rustdoc: redesign toolbar and disclosure widgets
Fixes #77899
Fixes #90310
## Preview
| before | after
| ------ | -----
|  | 
|  | 
|  | 
|  | 
|  | 
| N/A | 
|  | 
|  | 
https://notriddle.com/rustdoc-html-demo-12/toolbar-v2/std/index.html
## Description
This adds labels to the icons and moves them away from the search box.
These changes are made together, because they work together, but are based on several complaints:
* The [+/-] thing are a Reddit-ism. They don't look like buttons, but look like syntax <https://rust-lang.zulipchat.com/#narrow/stream/266220-t-rustdoc/topic/More.20visual.20difference.20for.20the.20.2B.2F-.20.20Icons>, <https://github.com/rust-lang/rust/issues/59851> (some of these are laundry lists with more suggestions, but they all mention [+/-] looking wrong)
* The settings, help, and summary buttons are also too hard to recognize <https://lwn.net/Articles/987070/>, <https://github.com/rust-lang/rust/issues/90310>, <https://github.com/rust-lang/rust/issues/14475#issuecomment-274241997>, <https://internals.rust-lang.org/t/improve-rustdoc-design/12758> ("Not all functionality is self-explanatory, for example the [+] button in the top right corner, the theme picker or the settings button.")
The toggle-all and toggle-individual buttons both need done at once, since we want them to look like they go together. This changes them from both being [+/-] to both being arrows.
CC <https://github.com/rust-lang/rust/pull/113074#issuecomment-1677469680> and ``@jsha`` regarding the use of triangles for disclosure, which is what everyone wanted, but was pending a good toggle-all button. This PR adds a toggle-all button that should work.
Settings and Help are also migrated, so that the whole group can benefit from being described using actual words.
The breadcrumbs also get redesigned, so that they use less space, by shrinking the parent module path parts. This is done at the same time as the toolbar redesign because it's, effectively, moving space from the toolbar to the breadcrumbs.
This is aimed at avoiding any line wrapping at desktop sizes.
## Prior art
This style of toolbar, with explicit labels on the buttons, used to be more popular. It's not very common in web browsers nowadays, and for truly universal icons like :arrow_left: I can understand why, but words are great when icons fail.
|
|
|
|
|
|
Implements the ACP https://github.com/rust-lang/libs-team/issues/393.
|
|
|
|
Implement ACP 429: add `Lazy{Cell,Lock}::get[_mut]` and `force_mut`
Tracking issue for `lazy_get`: https://github.com/rust-lang/rust/issues/129333
|
|
|
|
|
|
|
|
Apply size optimizations to panic machinery and some cold functions
* std dependencies gimli and addr2line are now built with opt-level=s
* various panic-related methods and `#[cold]` methods are now marked `#[optimize(size)]`
Panics should be cold enough that it doesn't make sense to optimize them for speed. The only tradeoff here is if someone does a lot of backtrace captures (without panics) and printing then the opt-level change might impact their perf.
Seems to be the first use of the optimize attribute. Tracking issue #54882
|
|
A partial stabilization that only affects:
- AllocType<T>::new_uninit
- AllocType<T>::assume_init
- AllocType<[T]>::new_uninit_slice
- AllocType<[T]>::assume_init
where "AllocType" is Box, Rc, or Arc
|
|
- `new_zeroed` variants move to `new_zeroed_alloc`
- the `write` fn moves to `box_uninit_write`
The remainder will be stabilized in upcoming patches, as
it was decided to only stabilize `uninit*` and `assume_init`.
|
|
CloneToUninit impls
As per #126799.
Also implements it for `Wtf8` and both versions of `os_str::Slice`.
Maybe it is worth to slap `#[inline]` on some of those impls.
r? `@dtolnay`
|
|
|
|
|
|
|
|
PinCoerceUnsized trait into core
cc ``@Darksonn`` ``@wedsonaf`` ``@ojeda``
This is a PR to introduce a `PinCoerceUnsized` trait in order to make trait impls generated by the proc-macro `#[derive(SmartPointer)]`, proposed by [RFC](https://github.com/rust-lang/rfcs/blob/e17e19ac7ad1c8ccad55d4babfaee1aa107d1da5/text/3621-derive-smart-pointer.md#pincoerceunsized-1), sound. There you may find explanation, justification and discussion about the alternatives.
Note that we do not seek stabilization of this `PinCoerceUnsized` trait in the near future. The stabilisation of this trait does not block the eventual stabilization process of the `#[derive(SmartPointer)]` macro. Ideally, use of `DerefPure` is more preferrable except this will actually constitute a breaking change. `PinCoerceUnsized` emerges as a solution to the said soundness hole while avoiding the breaking change. More details on the `DerefPure` option have been described in this [section](https://github.com/rust-lang/rfcs/blob/e17e19ac7ad1c8ccad55d4babfaee1aa107d1da5/text/3621-derive-smart-pointer.md#derefpure) of the RFC linked above.
Earlier discussion can be found in this [Zulip stream](https://rust-lang.zulipchat.com/#narrow/stream/136281-t-opsem/topic/Pin.20and.20soundness.20of.20unsizing.20coercions) and [rust-for-linux thread](https://rust-lang.zulipchat.com/#narrow/stream/425075-rust-for-linux/topic/.23.5Bderive.28SmartPointer.29.5D.20and.20pin.20unsoundness.20rfc.233621).
try-job: dist-various-2
|
|
Formatting tweaks
Some small post-#125443 formatting tweaks.
r? ``@cuviper``
|
|
workingjubilee:you-dont-need-to-see-this-cpuid-move-along, r=Amanieu
Finish removing `has_cpuid`
The one use of it was guaranteed to be always true.
try-job: test-various
|
|
The one use of it was guaranteed to be always true.
|
|
|
|
|
|
Bump bootstrap compiler to new beta
https://forge.rust-lang.org/release/process.html#master-bootstrap-update-t-2-day-tuesday
|
|
In #125443 this comment ended up in the wrong spot. I'm not sure why;
after careful checking this was the only case I could find like this.
|
|
|
|
Clean and enable `rustdoc::unescaped_backticks` for `core/alloc/std/test/proc_macro`
I am not sure if the lint is supposed to be "ready enough" (since it is `allow` by default), but it does catch a couple issues in `core` (`alloc`, `std`, `test` and `proc_macro` are already clean), so I propose making it `warn` in all the crates rendered in the website.
Cc: `@GuillaumeGomez`
|
|
They are all clean now, so enable the lint to keep them clean going forward.
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
|
|
The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.
|
|
|
|
|
|
Initial implementation of anonymous_pipe API
ACP completed in rust-lang/libs-team#375
Tracking issue: #127154
try-job: x86_64-msvc
try-job: i686-mingw
|
|
Co-authored-by: Alphyr <47725341+a1phyr@users.noreply.github.com>
Co-authored-by: Jubilee <46493976+workingjubilee@users.noreply.github.com>
Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>
|
|
- Update system table crc32
- Fix unsound use of Box
- Free exit data
- Code improvements
- Introduce OwnedTable
- Update r-efi to latest version
- Use extended_varargs_abi_support for
install_multiple_protocol_interfaces and
uninstall_multiple_protocol_interfaces
- Fix comments
- Stub out args implementation
Signed-off-by: Ayush Singh <ayushdevel1325@gmail.com>
|
|
Clean up more comments near use declarations
#125443 will reformat all use declarations in the repository. There are a few edge cases involving comments on use declarations that require care. This PR fixes them up so #125443 can go ahead with a simple `x fmt --all`. A follow-up to #126717.
r? ``@cuviper``
|
