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Rollup of 7 pull requests #121569

Merged
merged 16 commits into from
Feb 25, 2024
Merged

Rollup of 7 pull requests #121569

merged 16 commits into from
Feb 25, 2024

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matthiaskrgr
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Successful merges:

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup

Takashiidobe and others added 16 commits February 20, 2024 10:23
Fixes the explanation how to use is_finished to achieve a non-blocking
join. The updated version matches the documentation of the non-scoped
JoinHandle::is_finished.
Co-authored-by: matthewjasper <[email protected]>
Those libraries are build with `-C panic=unwind` and is expected to
be linkable to `-C panic=abort` library. To ensure unsoundness
compiler needs to prevent a `C-unwind` call to exist, as doing so may leak
foreign exceptions into `-C panic=abort`.
…slice, r=Mark-Simulacrum

Add examples for some methods on slices

Adds some examples to some methods on slice.

`is_empty` didn't have an example for an empty slice, even though `str` and the collections all have one, so I added that in.

`first_mut` and `last_mut` didn't have an example for what happens when the slice is empty, whereas `first` and `last` do, so I added that too.
…wjasper

match lowering: Split off `test_candidates` into several functions and improve comments

The logic of `test_candidates` has three steps: pick a test, sort the candidates, and generate code for everything. So I split it off into three methods.

I also ended up reworking the comments that explain the algorithm. In particular I added detailed examples. I removed the digression about rust-lang#29740 because it's no longer relevant to how the code is structured today.

r? ``@matthewjasper``
…on, r=Mark-Simulacrum

Ignore compiletest test directive migration commits

Not sure if the corresponding bors commit need to be included as well, assuming not.
…-obk

promotion: don't promote int::MIN / -1

Looks like I entirely forgot about this case when adding the div-by-zero check, which was supposed to ensure that we never promote operations that can fail...
Cc rust-lang#80619

This is a breaking change, so needs a crater run.
r? ``@oli-obk``
Fix incorrect doc of ScopedJoinHandle::is_finished

Fixes the explanation how to use `is_finished` to achieve a non-blocking join. The updated version matches the documentation of the non-scoped JoinHandle::is_finished.
Forbid use of `extern "C-unwind"` inside standard library

Those libraries are build with `-C panic=unwind` and is expected to be linkable to `-C panic=abort` library. To ensure unsoundness compiler needs to prevent a `C-unwind` call to exist, as doing so may leak foreign exceptions into `-C panic=abort`.

r? ``@RalfJung``
@rustbot rustbot added A-meta Area: Issues & PRs about the rust-lang/rust repository itself O-hermit Operating System: Hermit O-SGX Target: SGX O-unix Operating system: Unix-like O-wasi Operating system: Wasi, Webassembly System Interface O-windows Operating system: Windows S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. rollup A PR which is a rollup labels Feb 24, 2024
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@bors r+ rollup=never p=7

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bors commented Feb 24, 2024

📌 Commit 4c40153 has been approved by matthiaskrgr

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Feb 24, 2024
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bors commented Feb 24, 2024

⌛ Testing commit 4c40153 with merge 2ae1bb6...

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bors commented Feb 25, 2024

☀️ Test successful - checks-actions
Approved by: matthiaskrgr
Pushing 2ae1bb6 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Feb 25, 2024
@bors bors merged commit 2ae1bb6 into rust-lang:master Feb 25, 2024
12 checks passed
@rustbot rustbot added this to the 1.78.0 milestone Feb 25, 2024
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📌 Perf builds for each rolled up PR:

PR# Message Perf Build Sha
#121343 Add examples for some methods on slices f83f99c96101f8595c6931ab688ff26bef44c635 (link)
#121374 match lowering: Split off test_candidates into several fu… b74dd71b891b7f7a47f5bdf92f74dc2990a947de (link)
#121474 Ignore compiletest test directive migration commits 267c5a5aa5aa79c265a1f5c7919b6a28aba98e6a (link)
#121515 promotion: don't promote int::MIN / -1 1b9f34e4832bbce47980abf49f2860eba18fcb1a (link)
#121530 Fix incorrect doc of ScopedJoinHandle::is_finished 5a12f3936241c0b8d9e8cb7a91d22de1d7d8be67 (link)
#121551 Forbid use of extern "C-unwind" inside standard library 03e2416f15a0e86e17c416703ab067f9cbd9f292 (link)
#121556 Use addr_of! 9c66df77909293a60154891c69280c071de616fd (link)

previous master: 381d69953b

In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA

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Finished benchmarking commit (2ae1bb6): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
-0.4% [-0.4%, -0.4%] 1
All ❌✅ (primary) - - 0

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
8.8% [8.8%, 8.8%] 1
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
-4.3% [-5.3%, -3.2%] 2
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) 0.1% [-5.3%, 8.8%] 3

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
0.1% [0.0%, 0.2%] 2
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
-0.0% [-0.0%, -0.0%] 5
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) 0.0% [-0.0%, 0.2%] 7

Bootstrap: 649.328s -> 650.564s (0.19%)
Artifact size: 311.03 MiB -> 311.05 MiB (0.01%)

@matthiaskrgr matthiaskrgr deleted the rollup-awglrax branch March 16, 2024 18:18
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A-meta Area: Issues & PRs about the rust-lang/rust repository itself merged-by-bors This PR was explicitly merged by bors. O-hermit Operating System: Hermit O-SGX Target: SGX O-unix Operating system: Unix-like O-wasi Operating system: Wasi, Webassembly System Interface O-windows Operating system: Windows rollup A PR which is a rollup S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue.
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