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
Remove "static item recursion checking" in favor of relying on cycle checks in the query engine
Tests are changed to use the cycle check error message instead. Some duplicate tests are removed.
r? @eddyb
Historically this was done to accommodate bugs in lints, but there hasn't been a
bug in a lint since this feature was added which the warnings affected. Let's
completely purge warnings from all our stages by denying warnings in all stages.
This will also assist in tracking down `stage0` code to be removed whenever
we're updating the bootstrap compiler.
Adds `-Z mir-stats`, which is similar to `-Z hir-stats`.
Adds `-Z mir-stats`, which is similar to `-Z hir-stats`.
Some notes:
* This code attempts to present the breakdown of each variant for
every enum in the MIR. This is meant to guide decisions about how to
revise representations e.g. when to box payloads for rare variants
to shrink the size of the enum overall.
* I left out the "Total:" line that hir-stats presents, because this
implementation uses the MIR Visitor infrastructure, and the memory
usage of structures directly embedded in other structures (e.g. the
`func: Operand` in a `TerminatorKind:Call`) is not distinguished
from similar structures allocated in a `Vec` (e.g. the `args:
Vec<Operand>` in a `TerminatorKind::Call`). This means that a naive
summation of all the accumulated sizes is misleading, because it
will double-count the contribution of the `Operand` of the `func` as
well as the size of the whole `TerminatorKind`.
* I did consider abandoning the MIR Visitor and instead hand-coding
a traversal that distinguished embedded storage from indirect
storage. But such code would be fragile; better to just require
people to take care when interpreting the presented results.
* This traverses the `mir.promoted` rvalues to capture stats for MIR
stored there, even though the MIR visitor super_mir method does not
do so. (I did not observe any promoted mir being newly traversed when
compiling the rustc crate, however.)
* It might be nice to try to unify this code with hir-stats. Then
again, the reporting portion is the only common code (I think), and
it is small compared to the visitors in hir-stats and mir-stats.
Some notes:
* This code attempts to present the breakdown of each variant for
every enum in the MIR. This is meant to guide decisions about how to
revise representations e.g. when to box payloads for rare variants
to shrink the size of the enum overall.
* I left out the "Total:" line that hir-stats presents, because this
implementation uses the MIR Visitor infrastructure, and the memory
usage of structures directly embedded in other structures (e.g. the
`func: Operand` in a `TerminatorKind:Call`) is not distinguished
from similar structures allocated in a `Vec` (e.g. the `args:
Vec<Operand>` in a `TerminatorKind::Call`). This means that a naive
summation of all the accumulated sizes is misleading, because it
will double-count the contribution of the `Operand` of the `func` as
well as the size of the whole `TerminatorKind`.
* I did consider abandoning the MIR Visitor and instead hand-coding
a traversal that distinguished embedded storage from indirect
storage. But such code would be fragile; better to just require
people to take care when interpreting the presented results.
* This traverses the `mir.promoted` rvalues to capture stats for MIR
stored there, even though the MIR visitor super_mir method does not
do so. (I did not observe any new mir being traversed when compiling
the rustc crate, however.)
* It might be nice to try to unify this code with hir-stats. Then
again, the reporting portion is the only common code (I think), and
it is small compared to the visitors in hir-stats and mir-stats.
Stabilize `..` in tuple (struct) patterns
I'd like to nominate `..` in tuple and tuple struct patterns for stabilization.
This feature is a relatively small extension to existing stable functionality and doesn't have known blockers.
The feature first appeared in Rust 1.10 6 months ago.
An example of use: https://github.com/rust-lang/rust/pull/36203
Closes https://github.com/rust-lang/rust/issues/33627
r? @nikomatsakis
