Make `Sharded` an enum and specialize it for the single thread case
This changes `Sharded` to use a single shard by an enum, reducing the size of `Sharded` for greater cache efficiency.
Performance improvement with 1 thread and `cfg(parallel_compiler)`:
<table><tr><td rowspan="2">Benchmark</td><td colspan="1"><b>Before</b></th><td colspan="2"><b>After</b></th></tr><tr><td align="right">Time</td><td align="right">Time</td><td align="right">%</th></tr><tr><td>🟣 <b>clap</b>:check</td><td align="right">1.7009s</td><td align="right">1.6748s</td><td align="right">💚 -1.53%</td></tr><tr><td>🟣 <b>hyper</b>:check</td><td align="right">0.2525s</td><td align="right">0.2451s</td><td align="right">💚 -2.90%</td></tr><tr><td>🟣 <b>regex</b>:check</td><td align="right">0.9519s</td><td align="right">0.9353s</td><td align="right">💚 -1.74%</td></tr><tr><td>🟣 <b>syn</b>:check</td><td align="right">1.5504s</td><td align="right">1.5280s</td><td align="right">💚 -1.45%</td></tr><tr><td>🟣 <b>syntex_syntax</b>:check</td><td align="right">5.9536s</td><td align="right">5.8873s</td><td align="right">💚 -1.11%</td></tr><tr><td>Total</td><td align="right">10.4092s</td><td align="right">10.2706s</td><td align="right">💚 -1.33%</td></tr><tr><td>Summary</td><td align="right">1.0000s</td><td align="right">0.9825s</td><td align="right">💚 -1.75%</td></tr></table>
I did see an unexpected 0.23% change for the serial compiler, so this could use a perf run to see if that reproduces.
cc `@SparrowLii`
Ensure that THIR unsafety check is done before stealing it
This ensures that THIR unsafety check is done before stealing it by running it on the typeck root instead of on a closure, which does nothing.
Fixes https://github.com/rust-lang/rust/issues/111520
Default relax_elf_relocations to true
This option tells LLVM to emit relaxable relocation types R_X86_64_GOTPCRELX/R_X86_64_REX_GOTPCRELX/R_386_GOT32X in applicable cases. True matches Clang's CMake default since 2020-08 [1] and latest LLVM default[2].
This also works around a GNU ld<2.41 issue[2] when using general-dynamic/local-dynamic TLS models in `-Z plt=no` mode with latest LLVM.
[1]: c41a18cf61
[2]: 2aedfdd9b8
[3]: https://sourceware.org/bugzilla/show_bug.cgi?id=24784
This option tells LLVM to emit relaxable relocation types
R_X86_64_GOTPCRELX/R_X86_64_REX_GOTPCRELX/R_386_GOT32X in applicable cases. True
matches Clang's CMake default since 2020-08 [1] and latest LLVM default[2].
This also works around a GNU ld<2.41 issue[3] when using
general-dynamic/local-dynamic TLS models in `-Z plt=no` mode with latest LLVM.
[1]: c41a18cf61
[2]: 2aedfdd9b8
[3]: https://sourceware.org/bugzilla/show_bug.cgi?id=24784
Rustdoc: Add unstable --no-html-source flag
Fixes https://github.com/rust-lang/rust/issues/115060.
This is the equivalent of `#![doc(no_html_source)]` but on the command-line. It disables the generation of the source pages (and of the links pointing to them as well).
The motivation behind this is to enable to reduce documentation size when generating it in some locations without enforcing this to end users or adding a new feature to enable/disable the crate attribute.
r? `@notriddle`
Skip ExpandYamlAnchors when the config is missing
The dist-src tarball does not include `.github/` at all, so we can't
check whether it needs to be regenerated.
ArchiveWrapper: handle LLVM API update
In llvm/llvm-project@f740bcb370 a boolean parameter changed to an enum.
r? ``@nikic``
``@rustbot`` label: +llvm-main
ci: Update FreeBSD and illumos binutils to 2.40
The current old 2.25 seems to cause trouble to #106511.
Install texinfo to dist-x86_64-freebsd/Dockerfile like other containers
to fix
```
MAKEINFO doc/bfd.info
/binutils/binutils-2.40/missing: 81: /binutils/binutils-2.40/missing: makeinfo: not found
WARNING: 'makeinfo' is missing on your system.
```
---
https://www.freshports.org/devel/binutils uses 2.40 for FreeBSD 12.x as well.
`@nikic`
Rollup of 7 pull requests
Successful merges:
- #114930 (Automatically add OS labels to std PRs)
- #115053 (docs: Add example, reference link for `type` keyword.)
- #115092 (Add generics_of to smir)
- #115096 (Add regression test for not `memcpy`ing padding bytes)
- #115100 (Add support for `ptr::write`s for the `invalid_reference_casting` lint)
- #115114 (Contents of reachable statics is reachable)
- #115122 (Fix clippy lint for identical `if`/`else` contraining `?` expressions)
r? `@ghost`
`@rustbot` modify labels: rollup
Add support for `ptr::write`s for the `invalid_reference_casting` lint
This PR adds support for `ptr::write` and others for the `invalid_reference_casting` lint.
Detecting instances where instead of using the deref (`*`) operator to assign someone uses `ptr::write`, `ptr::write_unaligned` or `ptr::write_volatile`.
```rust
let data_len = 5u64;
std::ptr::write(
std::mem::transmute::<*const u64, *mut u64>(&data_len),
new_data_len,
);
```
r? ``@est31``
Add regression test for not `memcpy`ing padding bytes
Closes#56297
See this comparison: https://rust.godbolt.org/z/jjzfonfcE
I don't have any experience with codegen tests, I hope this is correct
Automatically add OS labels to std PRs
I'd love to have `library/std/src/sys` PRs that touch Windows stuff to have the `O-windows` label for easier discovery (and rediscovery). While I'm here I added a couple of other auto OS labels. Perhaps `O-unix` is a little too broad but it's hard to be more specific and I think it's still useful insomuch as POSIX is a thing.
r? libs
Update the links for Stabilized APIs in 1.72.0
* Use `stable` instead of `nightly` paths.
* Fix the anchors for `CStr::to_*` links.
r? `@Mark-Simulacrum`
Update cargo
3 commits in 80eca0e58fb2ff52c1e94fc191b55b37ed73e0e4..2cc50bc0b63ad20da193e002ba11d391af0104b7
2023-08-19 00:52:06 +0000 to 2023-08-22 22:43:08 +0000
- config: merge lists in precedence order (rust-lang/cargo#12515)
- ci: test `resolver-tests` in a separate job (rust-lang/cargo#12540)
- refactor: Use clap to suggest alternative argument for unsupported arguments (rust-lang/cargo#12529)
r? ghost
Don't do intra-pass validation on MIR shims
Fixes#114375
In the test that was committed, we end up generating the drop shim for `struct Foo` that looks like:
```
fn std::ptr::drop_in_place(_1: *mut Foo) -> () {
let mut _0: ();
bb0: {
goto -> bb5;
}
bb1: {
return;
}
bb2 (cleanup): {
resume;
}
bb3: {
goto -> bb1;
}
bb4 (cleanup): {
drop(((*_1).0: foo::WrapperWithDrop<()>)) -> [return: bb2, unwind terminate];
}
bb5: {
drop(((*_1).0: foo::WrapperWithDrop<()>)) -> [return: bb3, unwind: bb2];
}
}
```
In `bb4` and `bb5`, we assert that `(*_1).0` has type `WrapperWithDrop<()>`. However, In a user-facing param env, the type is actually `WrapperWithDrop<Tait>`. These types are not equal in a user-facing param-env (and can't be made equal even if we use `DefiningAnchor::Bubble`, since it's a non-local TAIT).
