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Rollup of 7 pull requests #91902

Merged
merged 15 commits into from
Dec 14, 2021
Merged

Rollup of 7 pull requests #91902

merged 15 commits into from
Dec 14, 2021

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matthiaskrgr
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Successful merges:

Failed merges:

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup

TennyZhuang and others added 15 commits December 11, 2021 20:29
…, r=yaahc

add BinaryHeap::try_reserve and BinaryHeap::try_reserve_exact

`try_reserve` of many collections were stablized in rust-lang#87993 in 1.57.0. Add `try_reserve` for the rest collections such as `BinaryHeap` should be not controversial.
… r=davidtwco

Suggest to specify a target triple when lang item is missing

It is very common for newbies to embedded to hit this confusing error when forgetting to specify the target.
Source: me googling this error many times.

## Possible changes
* We could possibly restrict the note+help to only be included on eh_personality lang item if that helped reduce false positives, but its also possible doing so would just increase false negatives
* Open to any suggestions on rewriting the messages
* We could possibly remove the `.cargo/config` alternative to avoid the message getting too noisy but I think its valuable to have as its the correct approach for most embedded projects so that `cargo build` just works.

r? rust-lang/diagnostics
…=yaahc

Make `MaybeUninit::zeroed` `const`

Tracking issue: rust-lang#91850

```rust
// core::mem
impl<T> MaybeUninit<T> {
    pub const fn zeroed() -> MaybeUninit<T>;
}
```
…g, r=Aaron1011

Use try_normalize_erasing_regions in RevealAllVisitor

Fixes rust-lang#91745

Thanks to ``@Aaron1011`` for [pointing out the problem](rust-lang#91745 (comment)).

r? ``@Aaron1011``
…val, r=oli-obk

Remove `in_band_lifetimes` from `rustc_const_eval`

See rust-lang#91867 for more information.
…le, r=dtolnay

Fix HashStable implementation on InferTy

HashStable impl forgot to hash the discriminant.

Fixes rust-lang#91807
@rustbot rustbot added T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. rollup A PR which is a rollup labels Dec 14, 2021
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@bors r+ rollup=never p=7

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bors commented Dec 14, 2021

📌 Commit 1dde0db has been approved by matthiaskrgr

@bors bors added the S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. label Dec 14, 2021
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bors commented Dec 14, 2021

⌛ Testing commit 1dde0db with merge 404c847...

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bors commented Dec 14, 2021

☀️ Test successful - checks-actions
Approved by: matthiaskrgr
Pushing 404c847 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Dec 14, 2021
@bors bors merged commit 404c847 into rust-lang:master Dec 14, 2021
@rustbot rustbot added this to the 1.59.0 milestone Dec 14, 2021
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Finished benchmarking commit (404c847): comparison url.

Summary: This change led to large relevant mixed results 🤷 in compiler performance.

  • Small improvement in instruction counts (up to -1.4% on incr-unchanged builds of wg-grammar)
  • Large regression in instruction counts (up to 4.0% on incr-unchanged builds of deep-vector)

If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf.

Next Steps: If you can justify the regressions found in this perf run, please indicate this with @rustbot label: +perf-regression-triaged along with sufficient written justification. If you cannot justify the regressions please open an issue or create a new PR that fixes the regressions, add a comment linking to the newly created issue or PR, and then add the perf-regression-triaged label to this PR.

@rustbot label: +perf-regression

@rustbot rustbot added the perf-regression Performance regression. label Dec 14, 2021
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deep-vector bounced back down again in #91728.

Seems unrelated to the stuff in this rollup.

@rustbot label: +perf-regression-triaged

@rustbot rustbot added the perf-regression-triaged The performance regression has been triaged. label Dec 15, 2021
@matthiaskrgr matthiaskrgr deleted the rollup-hjjyhow branch January 2, 2022 22:34
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