rustdoc: Replace pair of `Option`s with an enum
They are never both `None` or both `Some`, so it makes more sense to use
an enum so that we "make impossible states impossible".
Remove theme.js file
Fixes#82616.
The first commit moves the `theme.js` file into `main.js`, which requires to also run a small `.replace` on the `main.js` content.
The second commit is just a small cleanup to centralize DOM ids.
Since it removes a file from rustdoc output: cc `@rust-lang/docs-rs`
cc `@jsha`
r? `@jyn514`
Avoid temporary allocations in `render_assoc_item`
`render_assoc_item` came up as very hot in a profile of rustdoc on
`bevy`. This avoids some temporary allocations just to calculate the
length of the header.
This should be a strict improvement, since all string formatting was
done twice before.
cc #82845
Download a more recent LLVM version if `src/version` is modified
When bumping the bootstrap version, the name of the generated LLVM
shared object file is changed, even though it's the same contents as
before. If bootstrap tries to use an older version, it will get linking
errors:
```
Building rustdoc for stage1 (x86_64-unknown-linux-gnu)
Compiling rustdoc-tool v0.0.0 (/home/joshua/rustc/src/tools/rustdoc)
error: linking with `cc` failed: exit code: 1
|
= note: "cc" "-Wl,--as-needed" ... lots of args ...
= note: /usr/bin/ld: cannot find -lLLVM-12-rust-1.53.0-nightly
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: could not compile `rustdoc-tool`
```
Helps with https://github.com/rust-lang/rust/issues/81930.
Use TrustedRandomAccess for in-place iterators where possible
This can speed up in-place iterators containing simple casts and transmutes from `Copy` types to any type of same size. `!Copy` types can't be optimized since `TrustedRandomAccess` isn't implemented for those iterators.
```
name on.b ns/iter o1.b ns/iter diff ns/iter diff % speedup
vec::bench_transmute 20 (40000 MB/s) 12 (66666 MB/s) -8 -40.00% x 1.67
```
This saves us both the Freeze/Unpin queries, and avoids placing
noalias attributes, which have a compile-time impact on LLVM
even in optnone builds (due to always_inline functions).
Such structures may contain self-references, in which case the
same location may be accessible through a pointer that is not
based-on the noalias pointer.
This is still grey area as far as language semantics are concerned,
but checking for !Unpin as an indicator for self-referential
sturctures seems like a good approach for the meantime.
When bumping the bootstrap version, the name of the generated LLVM
shared object file is changed, even though it's the same contents as
before. If bootstrap tries to use an older version, it will get linking
errors:
```
Building rustdoc for stage1 (x86_64-unknown-linux-gnu)
Compiling rustdoc-tool v0.0.0 (/home/joshua/rustc/src/tools/rustdoc)
error: linking with `cc` failed: exit code: 1
|
= note: "cc" "-Wl,--as-needed" ... lots of args ...
= note: /usr/bin/ld: cannot find -lLLVM-12-rust-1.53.0-nightly
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: could not compile `rustdoc-tool`
```
Perform 'deep recollection' in test helper macros
Currently, the print helper macro performs 'recollection' by doing
`token_stream.into_iter().collect()`. However, this will not affect
nonterminals that occur nested inside delimited groups, since the
wrapping delimited group will be left untouched.
This commit adds 'deep recollection', which recursively recollects every
delimited group in the token stream. As with normal recollection, we
only print out something if deep recollection results in a different
stringified token stream.
This is useful for catching bugs where we update the AST of a
nonterminal (which affects pretty-printing), but do not update the
attatched `TokenStream`
Currently, the print helper macro performs 'recollection' by doing
`token_stream.into_iter().collect()`. However, this will not affect
nonterminals that occur nested inside delimited groups, since the
wrapping delimited group will be left untouched.
This commit adds 'deep recollection', which recursively recollects every
delimited group in the token stream. As with normal recollection, we
only print out something if deep recollection results in a different
stringified token stream.
This is useful for catching bugs where we update the AST of a
nonterminal (which affects pretty-printing), but do not update the
attatched `TokenStream`
Extend `proc_macro_back_compat` lint to `js-sys`
With this PR, we now lint for all cases where we perform some kind of
proc-macro back-compat hack.
The `js-sys` had an internal fix made to properly handle
`None`-delimited groups, so we need to manually check the version in the
filename. As a result, we no longer apply the back-compat hack to cases
where the version number is missing file the file path. This should not
affect any users of the `crates.io` crate.
const_evaluatable_checked: Stop eagerly erroring in `is_const_evaluatable`
Fixes#82279
We don't want to be emitting errors inside of is_const_evaluatable because we may call this during selection where it should be able to fail silently
There were two errors being emitted in `is_const_evaluatable`. The one causing the compile error in #82279 was inside the match arm for `FailureKind::MentionsParam` but I moved the other error being emitted too since it made things cleaner imo
The `NotConstEvaluatable` enum \*should\* have a fourth variant for when we fail to evaluate a concrete const, e.g. `0 - 1` but that cant happen until #81339
cc `@oli-obk` `@lcnr`
r? `@nikomatsakis`
Rollup of 8 pull requests
Successful merges:
- #79986 (Only build help popup when it's really needed)
- #82570 (Add `as_str` method for split whitespace str iterators)
- #83244 (Fix overflowing length in Vec<ZST> to VecDeque)
- #83254 (Include output stream in `panic!()` documentation)
- #83269 (Revert the second deprecation of collections::Bound)
- #83277 (Mark early otherwise optimization unsound)
- #83285 (Update LLVM to bring in SIMD updates for WebAssembly)
- #83297 (Do not ICE on ty::Error as an error must already have been reported)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Update LLVM to bring in SIMD updates for WebAssembly
This is a continuation of https://github.com/rust-lang/llvm-project/pull/96
to continue to make progress on updating Rust's support for SIMD
intrinsics on WebAssembly to the latest version of the specification.
Mark early otherwise optimization unsound
r? `@oli-obk`
cc `@tmiasko`
Related to #78496 and #82905
Should I also bump this one to level 3 or 4 or given that is unsound it doesn't matter?.
Probably need to adjust some tests.
Only build help popup when it's really needed
When working on https://github.com/rust-lang/rust/pull/79985, I realized that the help popup was built even when it wasn't needed. This PR only makes the help popup to be built when required.
r? `@jyn514`
With this PR, we now lint for all cases where we perform some kind of
proc-macro back-compat hack.
The `js-sys` had an internal fix made to properly handle
`None`-delimited groups, so we need to manually check the version in the
filename. As a result, we no longer apply the back-compat hack to cases
where the version number is missing file the file path. This should not
affect any users of the `crates.io` crate.
