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whitelist RTM x86 target cpu feature
This PR adds support for intels restricted transactional memory cpu feature. I mostly copied what was done for the [movbe](https://github.com/rust-lang/rust/pull/57999) feature.
https://github.com/rust-lang-nursery/stdsimd/issues/718
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Rename files about error codes
fixes #60017
This PR will be failed in tidy.
<details>
<summary>The log is here:</summary>
```
tidy check
tidy error: duplicate error code: 411
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:83: __diagnostic_used!(E0411);
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:84: err.code(DiagnosticId::Error("E0411".to_owned()));
tidy error: duplicate error code: 424
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:90: debug!("smart_resolve_path_fragment: E0424, source={:?}", source);
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:92: __diagnostic_used!(E0424);
tidy error: Documents\GitHub\rust\src\librustc_resolve\diagnostics.rs:93: err.code(DiagnosticId::Error("E0424".to_owned()));
some tidy checks failed
```
</details>
I'd like to fix this but I don't know what to do.
I will work on later. Please let me know if you have any solutions.
r? @petrochenkov
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Small comments fix
- Fix comments around test harness generation
- Promote regular comments to rustdoc comments
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Emit ansi color codes in the `rendered` field of json diagnostics
cc @ljedrz
Implemented for https://github.com/rust-lang/rust/pull/56595#issuecomment-447645115 (x.py clippy)
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Increase `Span` from 4 bytes to 8 bytes.
This increases the size of some important types, such as `ast::Expr` and
`mir::Statement`. However, it drastically reduces how much the interner
is used, and the fields are more natural sizes that don't require bit
operations to extract.
As a result, instruction counts drop across a range of workloads, by as
much as 10% for `script-servo` incremental builds.
Peak memory usage goes up a little for some cases, but down by more for
some other cases -- as much as 18% for non-incremental builds of
`packed-simd`.
The commit also:
- removes the `repr(packed)`, because it has negligible effect, but can
cause undefined behaviour;
- replaces explicit impls of common traits (`Copy`, `PartialEq`, etc.)
with derived ones.
r? @petrochenkov
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Make duplicate matcher bindings a hard error
r? @Centril
Closes #57742
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remove lookup_char_pos_adj
It is now exactly equivalent to lookup_char_pos.
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Recover from missing semicolon based on the found token
When encountering one of a few keywords when a semicolon was
expected, suggest the semicolon and recover:
```
error: expected one of `.`, `;`, `?`, or an operator, found `let`
--> $DIR/recover-missing-semi.rs:4:5
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LL | let _: usize = ()
| - help: missing semicolon here
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LL | let _ = 3;
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error[E0308]: mismatched types
--> $DIR/recover-missing-semi.rs:2:20
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LL | let _: usize = ()
| ^^ expected usize, found ()
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= note: expected type `usize`
found type `()`
```
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Tweak unstable diagnostic output
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Error when using `catch` after `try`
Part of https://github.com/rust-lang/rust/issues/31436
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Fix lifetime on LocalInternedString::get function
cc @eddyb @nnethercote
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When encountering one of a few keywords when a semicolon was
expected, suggest the semicolon and recover:
```
error: expected one of `.`, `;`, `?`, or an operator, found `let`
--> $DIR/recover-missing-semi.rs:4:5
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LL | let _: usize = ()
| - help: missing semicolon here
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LL | let _ = 3;
| ^^^
error[E0308]: mismatched types
--> $DIR/recover-missing-semi.rs:2:20
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LL | let _: usize = ()
| ^^ expected usize, found ()
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= note: expected type `usize`
found type `()`
```
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It is now exactly equivalent to lookup_char_pos.
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cleanup shebang handling in the lexer
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This increases the size of some important types, such as `ast::Expr` and
`mir::Statement`. However, it drastically reduces how much the interner
is used, and the fields are more natural sizes that don't require bit
operations to extract.
As a result, instruction counts drop across a range of workloads, by as
much as 12% for incremental "check" builds of `script-servo`.
Peak memory usage goes up a little for some cases, but down by more for
some other cases -- as much as 18% for non-incremental builds of
`packed-simd`.
The commit also:
- removes the `repr(packed)`, because it has negligible effect, but can
cause undefined behaviour;
- replaces explicit impls of common traits (`Copy`, `PartialEq`, etc.)
with derived ones.
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is_doc_comment function checks the first four chars, but this is
redundant, `doc_comment` local var has the same info.
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Make some of lexer's API private
Lexer is a `pub` type, so it feels wrong that its fields are just pub (I guess it wasn't exported initially), so let's minimize visibility.
Context: I am looking into extracting rust-lexer into a library, which can be shared by rust-analyzer and rustc. I hope that a simple interface like `fn next_token(src: &str) -> (TokenKind, usize)` would work, but to try this out I need to understand what is the current API of the lexer.
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- libarena
- librustc_allocator
- librustc_borrowck
- librustc_codegen_ssa
- librustc_codegen_utils
- librustc_driver
- librustc_errors
- librustc_incremental
- librustc_metadata
- librustc_passes
- librustc_privacy
- librustc_resolve
- librustc_save_analysis
- librustc_target
- librustc_traits
- libsyntax
- libsyntax_ext
- libsyntax_pos
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a bool
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r=pnkfelix
fixes rust-lang#56766
fixes #56766
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Optimize indentation in the pretty printer.
Currently the pretty-printer calls `write!` for every space of
indentation. On some workloads the indentation level can exceed 100, and
a faster implementation reduces instruction counts by up to 7% on a few
workloads.
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Currently the pretty-printer calls `write!` for every space of
indentation. On some workloads the indentation level can exceed 100, and
a faster implementation reduces instruction counts by up to 7% on a few
workloads.
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Whitelist some rustc attrs
These rustc attrs are used within libcore, and were causing failures when one mixed incremental compilation with bootstrapping (due to a default of `-D warnings` when bootstrapping).
Fix #59523
Fix #59524
Cc #58633
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Recover from parse error in tuple syntax
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