Rollup of 20 pull requests#154727
Merged
rust-bors[bot] merged 77 commits intorust-lang:mainfrom Apr 2, 2026
Merged
Conversation
PR rust-lang#154634 recently renamed many type parameters that impl `HashStableContext` as `Hcx`. It missed a few that are named `HirCtx`. This commit renames them.
They're in multiple sections with no rhyme or reason.
`derive(HashStable_Generic)` generates impls like this:
```
impl<__CTX> HashStable<__CTX> for ExpnKind
where
__CTX: crate::HashStableContext
{
fn hash_stable(&self, hcx : &mut __CTX, __hasher: &mut StableHasher) {
...
}
}
```
This is used for crates that are upstream of `rustc_middle`.
The `crate::HashStableContext` bound means every crate that uses
`derive(HashStable_Generic)` must provide (or import) a trait
`HashStableContext` which `rustc_middle` then impls. In `rustc_span`
this trait is sensible, with three methods. In other crates, this trait
is empty, and there is the following trait hierarchy:
```
rustc_session::HashStableContext
| |
| rustc_hir::HashStableContext
| / \
rustc_ast::HashStableContext rustc_abi::HashStableContext
|
rustc_span::HashStableContext
```
All very strange and unnecessary. This commit changes
`derive(HashStable_Generic)` to use `rustc_span::HashStableContext`
instead of `crate::HashStableContext`. This eliminates the need for all
the empty `HashStableContext` traits and impls. Much better.
This annotates the `Arc` type with the diagnostic attribute `#[diagnostic::on_move]`. Now when a moved `Arc` is borrowed, a suggestion to clone it is made, with a label explaining why.
…_attrs` function
…y_macro_source` function
…_macro` function
rustbot
added
T-compiler
Contributor
Author
|
@bors r+ rollup=never p=5 |
Contributor
rust-bors
bot
added
S-waiting-on-bors
This comment has been minimized.
This comment has been minimized.
rust-bors
bot
added
merged-by-bors
Contributor
Contributor
What is this?This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.Comparing e6b64a2 (parent) -> 55e86c9 (this PR) Test differencesShow 556 test diffsStage 1
Stage 2
Additionally, 480 doctest diffs were found. These are ignored, as they are noisy. Job group index
Test dashboardRun cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 55e86c996809902e8bbad512cfb4d2c18be446d9 --output-dir test-dashboardAnd then open Job duration changes
How to interpret the job duration changes?Job durations can vary a lot, based on the actual runner instance |
Collaborator
|
📌 Perf builds for each rolled up PR:
previous master: e6b64a2f4c In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
This was referenced Apr 2, 2026
Collaborator
|
Finished benchmarking commit (55e86c9): comparison URL. Overall result: ❌✅ regressions and improvements - please read the text belowOur benchmarks found a performance regression caused by this PR. Next Steps:
@rustbot label: +perf-regression Instruction countOur most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
Max RSS (memory usage)Results (primary 1.1%, secondary 3.5%)A less reliable metric. May be of interest, but not used to determine the overall result above.
CyclesThis benchmark run did not return any relevant results for this metric. Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 487.024s -> 486.952s (-0.01%) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
20 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Successful merges:
layout_ofcycles fatal errors #153960 (Makelayout_ofcycles fatal errors)StableHashContextimpls #154666 (RemoveStableHashContextimpls)Arc#154669 (Introduce #[diagnostic::on_move] onArc)-Znext-solverRemove the forced ambiguity hack from search graph" #154712 (Revert "-Znext-solverRemove the forced ambiguity hack from search graph")FindParamInClausehandle edge-cases #153614 (FindParamInClausehandle edge-cases)deriveat the crate root:core::deriveandstd::derive#154442 (Exportderiveat the crate root:core::deriveandstd::derive)probe_ty_vartotry_resolve_ty_var#154578 (Renameprobe_ty_vartotry_resolve_ty_var)DocContextwithTyCtxtwherever possible #154680 ([rustdoc] ReplaceDocContextwithTyCtxtwherever possible)Tytype alias inrustc_type_ir#154709 (RevertTytype alias inrustc_type_ir)r? @ghost
Create a similar rollup