Rollup of 8 pull requests
Successful merges:
- #104265 (Move IpAddr, SocketAddr and V4+V6 related types to `core`)
- #107110 ([stdio][windows] Use MBTWC and WCTMB)
- #108308 (Allow building serde and serde_derive in parallel)
- #108363 (Move the unused extern crate check back to the resolver.)
- #108519 (Bages for easy access links to Rust community)
- #108522 (Commit some new solver tests)
- #108523 (Avoid `&str` to `String` conversions)
- #108533 (diagnostics: avoid querying `associated_item` in the resolver)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Commit some new solver tests
Lazy norm is hard.
`<?0 as Trait>::Assoc = ?0` ... probably should emit an alias-eq goal, but currently we don't do that. Right now it fails with a cyclical ty error.
Also committed a check-pass test that broken when I attempted to fix this (unsuccessfully).
r? types
[stdio][windows] Use MBTWC and WCTMB
`MultiByteToWideChar` and `WideCharToMultiByte` are extremely well optimized, and therefore should probably be used when we know we can (specifically in the Windows stdio stuff).
Fixes#107092
Move IpAddr, SocketAddr and V4+V6 related types to `core`
Implements RFC https://github.com/rust-lang/rfcs/pull/2832. The RFC has completed FCP with disposition merge, but is not yet merged.
Moves IP types to `core` as specified in the RFC.
The full list of moved types is: `IpAddr`, `Ipv4Addr`, `Ipv6Addr`, `SocketAddr`, `SocketAddrV4`, `SocketAddrV6`, `Ipv6MulticastScope` and `AddrParseError`.
Doing this move was one of the main driving arguments behind #78802.
Move THIR printing to rustc_mir_build.
https://github.com/rust-lang/rust/pull/107451 increased the compilation time of `rustc_middle` by 10% = 3s.
As https://github.com/rust-lang/rust/pull/107006 adds quite a lot of code to rustc_middle, I suspect it to be the cause.
This PR moves the THIR printing code to `rustc_mir_build`, where the query provider lives, in order to benefit from higher parallelism when compiling rustc.
MIR-Validate StorageLive.
`StorageLive` statements on a local which already has storage is banned by miri.
This check is easy enough, and can detect bugs in MIR opts.
Remove @nagisa from review rotation
I have been reviewing PRs for a long while during weekends, however recently I’ve been having trouble commiting to that as well. Every weekend I’ve been spending working on a house.
I may return myself to the rotation in a couple of months. I may also just start ninja'ing up some PRs from the PR list whenever I find some time for reviews again, without putting myself back into the rotation, in acknowledgement that me being able to review every weekend or every second weekend is not a great experience for the contributors waiting on reviews from me.
Unify validity checks into a single query
Previously, there were two queries to check whether a type allows the 0x01 or zeroed bitpattern.
I am planning on adding a further initness to check in #100423, truly uninit for MaybeUninit, which would make this three queries. This seems overkill for such a small feature, so this PR unifies them into one.
I am not entirely happy with the naming and key type and open for improvements.
r? oli-obk
Don't project specializable RPITIT projection
This effective rejects specialization + RPITIT/AFIT (usages of `impl Trait` in traits) because the implementation is significantly complicated over making regular "default" trait method bodies work.
I have another PR that experimentally fixes all this, but the code may not be worth investing in.
I have been reviewing PRs for a long while during weekends, however
recently I’ve been having trouble commiting to that as well. Every
weekend I’ve been spending working on a house.
I may return myself to the rotation in a couple of months. I may also
just start ninja'ing up some PRs from the PR list whenever I find some
time for reviews again, without putting myself back into the rotation,
in acknowledgement that me being able to review every weekend or every
second weekend is not a great experience for the contributors waiting on
reviews from me.
Emit the enum discriminant separately for the Encodable macro
This changes the `Encodable` proc macro to first emit the discriminant with a separate `match` statement, then emit the fields. LLVM can optimize down the first `match` to just a read of the enum discriminant. This avoids generating a `emit_usize` call per variant and enums with no fields now optimize down to just a single `emit_usize` call.
The no variant case is special cased to avoid warnings about unreachable code.
<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:unchanged</td><td align="right">0.4676s</td><td align="right">0.4640s</td><td align="right"> -0.78%</td></tr><tr><td>🟣 <b>hyper</b>:check:unchanged</td><td align="right">0.1348s</td><td align="right">0.1338s</td><td align="right"> -0.75%</td></tr><tr><td>🟣 <b>regex</b>:check:unchanged</td><td align="right">0.3370s</td><td align="right">0.3352s</td><td align="right"> -0.54%</td></tr><tr><td>🟣 <b>syn</b>:check:unchanged</td><td align="right">0.6326s</td><td align="right">0.6281s</td><td align="right"> -0.71%</td></tr><tr><td>🟣 <b>syntex_syntax</b>:check:unchanged</td><td align="right">1.8561s</td><td align="right">1.8589s</td><td align="right"> 0.15%</td></tr><tr><td>Total</td><td align="right">3.4282s</td><td align="right">3.4200s</td><td align="right"> -0.24%</td></tr><tr><td>Summary</td><td align="right">1.0000s</td><td align="right">0.9947s</td><td align="right"> -0.53%</td></tr></table>
Upgrade to ena-0.14.1.
It avoids some inlining within its `inlined_probe_value` function, which seems to result in better codegen for the very large `process_obligations` function within rustc. It might also help with reducing the bimodal perf results we see for the `keccak` and `cranelift-codegen-0.82.1` benchmarks.
r? `@ghost`
