| Age | Commit message (Collapse) | Author | Lines |
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replace more `DefId`s with `LocalDefId`
part of https://github.com/rust-lang/rust/issues/70853
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This is a re-attempt of #72389 (which was reverted in #73594)
Instead of using `ExpnKind::Desugaring` to represent operators, this PR
checks the lang item directly.
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Fixes #70718
This commit allows making associated items (e.g. associated functions
and types) into lang items via the `#[lang]` attribute. This allows such
items to be accessed directly, rather than by iterating over the parent
item's associated items.
I've added `FnOnce::Output` as a lang item, and updated one old usage to
use the new lang item. The remaining uses can be updated separately.
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first stage of implementing LLVM code coverage
This PR replaces #70680 (WIP toward LLVM Code Coverage for Rust) since I am re-implementing the Rust LLVM code coverage feature in a different part of the compiler (in MIR pass(es) vs AST).
This PR updates rustc with `-Zinstrument-coverage` option that injects the llvm intrinsic `instrprof.increment()` for code generation.
This initial version only injects counters at the top of each function, and does not yet implement the required coverage map.
Upcoming PRs will add the coverage map, and add more counters and/or counter expressions for each conditional code branch.
Rust compiler MCP https://github.com/rust-lang/compiler-team/issues/278
Relevant issue: #34701 - Implement support for LLVMs code coverage instrumentation
***[I put together some development notes here, under a separate branch.](https://github.com/richkadel/rust/blob/cfa0b21d34ee64e4ebee226101bd2ef0c6757865/src/test/codegen/coverage-experiments/README-THIS-IS-TEMPORARY.md)***
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As suggested in PR feedback:
https://github.com/rust-lang/rust/pull/73011#discussion_r435728923
This allows count_code_region() to be handled like a normal intrinsic so
the InstanceDef::InjectedCode variant is no longer needed.
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Clean up type alias impl trait implementation
- Removes special case for top-level impl trait
- Removes associated opaque types
- Forbid lifetime elision in let position impl trait. This is consistent with the behavior for inferred types.
- Handle lifetimes in type alias impl trait more uniformly with other parameters
cc #69323
cc #63063
Closes #57188
Closes #62988
Closes #69136
Closes #73061
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Track span of function in method calls, and use this in #[track_caller]
Fixes #69977
When we parse a chain of method calls like `foo.a().b().c()`, each
`MethodCallExpr` gets assigned a span that starts at the beginning of
the call chain (`foo`). While this is useful for diagnostics, it means
that `Location::caller` will return the same location for every call
in a call chain.
This PR makes us separately record the span of the function name and
arguments for a method call (e.g. `b()` in `foo.a().b().c()`). This
`Span` is passed through HIR lowering and MIR building to
`TerminatorKind::Call`, where it is used in preference to
`Terminator.source_info.span` when determining `Location::caller`.
This new span is also useful for diagnostics where we want to emphasize
a particular method call - for an example, see
https://github.com/rust-lang/rust/pull/72389#discussion_r436035990
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They're unused now.
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Fixes #69977
When we parse a chain of method calls like `foo.a().b().c()`, each
`MethodCallExpr` gets assigned a span that starts at the beginning of
the call chain (`foo`). While this is useful for diagnostics, it means
that `Location::caller` will return the same location for every call
in a call chain.
This PR makes us separately record the span of the function name and
arguments for a method call (e.g. `b()` in `foo.a().b().c()`). This
`Span` is passed through HIR lowering and MIR building to
`TerminatorKind::Call`, where it is used in preference to
`Terminator.source_info.span` when determining `Location::caller`.
This new span is also useful for diagnostics where we want to emphasize
a particular method call - for an example, see
https://github.com/rust-lang/rust/pull/72389#discussion_r436035990
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Fixes more of:
clippy::unused_unit
clippy::op_ref
clippy::useless_format
clippy::needless_return
clippy::useless_conversion
clippy::bind_instead_of_map
clippy::into_iter_on_ref
clippy::redundant_clone
clippy::nonminimal_bool
clippy::redundant_closure
clippy::option_as_ref_deref
clippy::len_zero
clippy::iter_cloned_collect
clippy::filter_next
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r=davidtwco
Allow unlabeled breaks from desugared `?` in labeled blocks
`?` is desugared into a `break` targeting the innermost `try` scope in which it resides. The `break` however will not have a label. https://github.com/rust-lang/rust/blob/master/src/librustc_ast_lowering/expr.rs#L1560
Since the `target` of the `break` is known, the compiler should not complain about an unlabeled jump for `break`s desugared from `?`.
Closes https://github.com/rust-lang/rust/issues/72483
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librustc_middle: Rename upvars query to upvars_mentioned
As part of supporting RFC 2229, we will be capturing all the Places that
were mentioned in the closure.
This commit modifies the name of the upvars query to upvars_mentioned.
r? @nikomatsakis @blitzerr @matthewjasper
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Fix InlineAsmOperand expresions being visited twice during liveness checking
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As part of supporting RFC 2229, we will be capturing all the Places that
were mentioned in the closure.
This commit modifies the name of the upvars query to upvars_mentioned.
Co-authored-by: Aman Arora <me@aman-arora.com>
Co-authored-by: Chris Pardy <chrispardy36@gmail.com>
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Fixes clippy::{cone_on_copy, filter_next, redundant_closure, single_char_pattern, len_zero,redundant_field_names, useless_format, identity_conversion, map_clone, into_iter_on_ref, needless_return, option_as_ref_deref, unused_unit, unnecessary_mut_passed}
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Remove ast::{Ident, Name} reexports.
The reexport of `Symbol` into `Name` confused me.
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Dead-code pass highlights too much of impl functions
Fixes #66627.
Previous diagnostic:
```
error: method is never used: `unused_impl_fn_3`
--> src/main.rs:28:5
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28 | / fn unused_impl_fn_3(
29 | | var: i32,
30 | | ) {
31 | | println!("bar {}", var);
32 | | }
| |_____^
```
New diagnostic:
```
error: associated function is never used: `unused_impl_fn_3`
--> $DIR/lint-dead-code-6.rs:13:8
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LL | fn unused_impl_fn_3(
| ^^^^^^^^^^^^^^^^
```
This makes associated functions in line with free-standing functions.
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cleanup: `config::CrateType` -> `CrateType`
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Have the per-query caches store the results on arenas
This PR leverages the cache for each query to serve as storage area for the query results.
It introduces a new cache `ArenaCache`, which moves the result to an arena,
and only stores the reference in the hash map.
This allows to remove a sizeable part of the usage of the global `TyCtxt` arena.
I only migrated queries that already used arenas before.
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rustc: fix check_attr() for methods, closures and foreign functions
This fixes an issue that previously turned up for methods in https://github.com/rust-lang/rust/pull/69274, but also exists for closures and foreign function: `check_attr` does not call `codegen_fn_attrs()` for these types when it should, meaning that incorrectly used function attributes are not diagnosed without codegen.
The issue affects our UI tests, as they run with `--emit=metadata` by default, but as it turns out, this is not the only case: Function attributes are not checked on any dead code without this fix!
This makes the fix a **breaking change**. The following very silly Rust programs compiles fine on stable Rust when it should not, which is fixed by this PR.
```rust
fn main() {
#[target_feature(enable = "sse2")]
|| {};
}
```
I assume any real-world program which may trigger this issue would at least emit a dead code warning, but of course that is no guarantee that such code does not exist...
Fixes #70307
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