[watchos] Dynamic linking is not allowed for watchos targets
Dynamic linking of all apple targets was (re-) enabled in PR #100636. However, dynamic linking is not allowed on WatchOS so this broke the build of standard library for WatchOS.
This change disables dynamic linking for WatchOS non-simulator targets.
remove CI badge
We don't actually run CI on the `master` branch (because bors checks things before they can even be on master), so this doesn't really show anything. rustc doesn't have a badge either. I think we can live without it. :D
Support `#[track_caller]` on async fns
Adds `#[track_caller]` to the generator that is created when we desugar the async fn.
Fixes#78840
Open questions:
- What is the performance impact of adding `#[track_caller]` to every `GenFuture`'s `poll(...)` function, even if it's unused (i.e., the parent span does not set `#[track_caller]`)? We might need to set it only conditionally, if the indirection causes overhead we don't want.
- support pulling specific commit
- make rust-version update a separate commit to avoid confusing josh
- after pushing, check that we have a clear round-trip
Attempt to reuse `Vec<T>` backing storage for `Rc/Arc<[T]>`
If a `Vec<T>` has sufficient capacity to store the inner `RcBox<[T]>`, we can just reuse the existing allocation and shift the elements up, instead of making a new allocation.
When running tests inside the Android emulator, bootstrap doesn't set
the TEST_DEVICE_ADDR environment variable, as the default address
(127.0.0.1:12345) is used.
Instead, REMOTE_TEST_CLIENT is set all the times when remote testing is
needed, and in no other cases. To ensure Android tests are executed in
the emulator, change the check.
Record `LocalDefId` in HIR nodes instead of a side table
This is part of an attempt to remove the `HirId -> LocalDefId` table from HIR.
This attempt is a prerequisite to creation of `LocalDefId` after HIR lowering (https://github.com/rust-lang/rust/pull/96840), by controlling how `def_id` information is accessed.
This first part adds the information to HIR nodes themselves instead of a table.
The second part is https://github.com/rust-lang/rust/pull/103902
The third part will be to make `hir::Visitor::visit_fn` take a `LocalDefId` as last parameter.
The fourth part will be to completely remove the side table.
This commit takes advantage of the ability to set [flex-basis] to a specific
length instead of setting it to `auto` and changing min-/max-width, and
setting flex-grow/-shrink both to 0.
[flex-basis]: https://developer.mozilla.org/en-US/docs/Web/CSS/flex-basis
x86_64 SSE2 fast-path for str.contains(&str) and short needles
Based on Wojciech Muła's [SIMD-friendly algorithms for substring searching](http://0x80.pl/articles/simd-strfind.html#sse-avx2)
The two-way algorithm is Big-O efficient but it needs to preprocess the needle
to find a "critical factorization" of it. This additional work is significant
for short needles. Additionally it mostly advances needle.len() bytes at a time.
The SIMD-based approach used here on the other hand can advance based on its
vector width, which can exceed the needle length. Except for pathological cases,
but due to being limited to small needles the worst case blowup is also small.
benchmarks taken on a Zen2, compiled with `-Ccodegen-units=1`:
```
OLD:
test str::bench_contains_16b_in_long ... bench: 504 ns/iter (+/- 14) = 5061 MB/s
test str::bench_contains_2b_repeated_long ... bench: 948 ns/iter (+/- 175) = 2690 MB/s
test str::bench_contains_32b_in_long ... bench: 445 ns/iter (+/- 6) = 5732 MB/s
test str::bench_contains_bad_naive ... bench: 130 ns/iter (+/- 1) = 569 MB/s
test str::bench_contains_bad_simd ... bench: 84 ns/iter (+/- 8) = 880 MB/s
test str::bench_contains_equal ... bench: 142 ns/iter (+/- 7) = 394 MB/s
test str::bench_contains_short_long ... bench: 677 ns/iter (+/- 25) = 3768 MB/s
test str::bench_contains_short_short ... bench: 27 ns/iter (+/- 2) = 2074 MB/s
NEW:
test str::bench_contains_16b_in_long ... bench: 82 ns/iter (+/- 0) = 31109 MB/s
test str::bench_contains_2b_repeated_long ... bench: 73 ns/iter (+/- 0) = 34945 MB/s
test str::bench_contains_32b_in_long ... bench: 71 ns/iter (+/- 1) = 35929 MB/s
test str::bench_contains_bad_naive ... bench: 7 ns/iter (+/- 0) = 10571 MB/s
test str::bench_contains_bad_simd ... bench: 97 ns/iter (+/- 41) = 762 MB/s
test str::bench_contains_equal ... bench: 4 ns/iter (+/- 0) = 14000 MB/s
test str::bench_contains_short_long ... bench: 73 ns/iter (+/- 0) = 34945 MB/s
test str::bench_contains_short_short ... bench: 12 ns/iter (+/- 0) = 4666 MB/s
```
Use `token::Lit` in `ast::ExprKind::Lit`.
Instead of `ast::Lit`.
Literal lowering now happens at two different times. Expression literals are lowered when HIR is crated. Attribute literals are lowered during parsing.
r? `@petrochenkov`
Before 7f6ce7dddd49f453da15bb4d586a5990985814d8, light-theme where clauses
had color `#4E4C4C` while the main color was `#000`. One of that commit's
simplifications made it so that everything used the same black.
Backtraces can very significantly depending on environment and cause
test suite failures spuriously. Ensuring a proper failure-status should
be sufficient to keep a crash properly documented.
rustdoc: remove no-op CSS `#crate-search-div { display: inline-block }`
`#crate-search-div` is nested directly below `.search-results-title`, which has `display: inline-flex`. This makes the crate-search-div a [flex item], which makes its display property irrelevant, because flex items have their display [blockified] in any case.
[flex item]: https://developer.mozilla.org/en-US/docs/Glossary/Flex_Item
[blockified]: https://www.w3.org/TR/css-flexbox-1/#flex-items
rustdoc: remove pointless CSS `.rightside { padding-right: 2px }`
This CSS was added in 34bd2b845b3acd84c5a9bddae3ff8081c19ec5e9, as `.since { padding-right: 2px }`, to prevent it from uncomfortably touching the srclink, which were separate floated elements. It was carried forward with 962c0a4ee59e3c1a2413e785694c9433ffd0a9e1 to the new `.rightside`, but its role was replaced with adding " • " between them. All it does now is pushes the element 2px away from the page's right margin.
Removing this rule changes the page layout, but you have to look for it to notice it.
rustdoc: remove unused JS IIFE from main.js
This [IIFE] made sense when it was added in f0683f98fa114cc4f9e795031f44be3eebb65790 and there was a local variable scoped to it, but now it only sets two globals, so it does nothing.
[IIFE]: https://developer.mozilla.org/en-US/docs/Glossary/IIFE "immediately invoked function expression"
Only do parser recovery on retried macro matching
Eager parser recovery can break macros, so we don't do it at first. But when we already know that the macro failed, we can retry it with recovery enabled to still emit useful diagnostics.
Helps with #103534
cleanup and dedupe CTFE and Miri error reporting
It looks like most of the time, this error raised from const_prop_lint is just redundant -- it duplicates the error reported when evaluating the const-eval query. This lets us make `ConstEvalErr` private to the const_eval module which I think is a good step.
The Miri change mostly replaces a `match` by `if let`, and dedupes the "this error is impossible in Miri" checks.
r? ``@oli-obk``
Fixes https://github.com/rust-lang/rust/issues/75461
