Rollup of 6 pull requests #135101

workingjubilee · 2025-01-04T15:57:37Z

Successful merges:

turn rustc_box into an intrinsic #135046 (turn rustc_box into an intrinsic)
crashes: add latest batch of tests #135061 (crashes: add latest batch of tests)
std: sync to dep versions of backtrace #135070 (std: sync to dep versions of backtrace)
Force code generation in assembly generation smoke-tests #135088 (Force code generation in assembly generation smoke-tests)
Bump backtrace to 0.3.75 #135091 (Bump backtrace to 0.3.75)
bootstrap: If dir_is_empty fails, show the non-existent directory path #135094 (bootstrap: If dir_is_empty fails, show the non-existent directory path)

r? @ghost
@rustbot modify labels: rollup

In llvm/llvm-project@7b23f41 , `.text` started being suppressed from LLVM assembly in cases where it wasn't strictly necessary. Currently, the sample functions in these two tests are frequently decided to be IR-only functions, resulting in no code generation, so LLVM drops the `.text` directive. Adding `#[no_mangle]` forces these tests back to their original intent - assembly code is generated, and so a `.text` directive is generated as well.

I prefer when we can ship the same version of backtrace on crates.io, and this will be the next published version. Compare: rust-lang/backtrace-rs@4d7906b...0.3.75 Mostly internal-to-backtrace changes, plus a tiny code size win.

This should help when trying to debug issues.

…mpiler-errors turn rustc_box into an intrinsic I am not entirely sure why this was made a special magic attribute, but an intrinsic seems like a more natural way to add magic expressions to the language.

crashes: add latest batch of tests try-job: aarch64-apple try-job: x86_64-msvc try-job: x86_64-gnu try-job: dist-i586-gnu-i586-i686-musl

…bilee std: sync to dep versions of backtrace Minor versions from backtrace desynced with std (they still differs in patch numbers, but still better): https://github.com/rust-lang/backtrace-rs/blob/4d7906bb24ae91ee6587127020d360f5298f9e7e/Cargo.toml#L44-L48 There is hidden bug here, let's see if CI can find it. cc `@workingjubilee`

Force code generation in assembly generation smoke-tests In llvm/llvm-project@7b23f41 , `.text` started being suppressed from LLVM assembly in cases where it wasn't strictly necessary. Currently, the sample functions in these two tests are frequently decided to be IR-only functions, resulting in no code generation, so LLVM drops the `.text` directive. Adding `#[no_mangle]` forces these tests back to their original intent - assembly code is generated, and so a `.text` directive is generated as well. `@rustbot` label: +llvm-main r? `@workingjubilee` I'll attach a buildbot link once it finishes consuming this PR

…=workingjubilee Bump backtrace to 0.3.75 I prefer when we can ship the same version of backtrace on crates.io, and this will be the next published version. Compare: rust-lang/backtrace-rs@4d7906b...0.3.75 Mostly internal-to-backtrace changes, plus a tiny code size win. r? `@ghost`

…stent-dir, r=jieyouxu bootstrap: If dir_is_empty fails, show the non-existent directory path This should help when trying to debug issues.

workingjubilee · 2025-01-04T15:57:45Z

@bors r+ rollup=never p=5

bors · 2025-01-04T15:57:47Z

📌 Commit e2983d8 has been approved by workingjubilee

It is now in the queue for this repository.

bors · 2025-01-04T21:11:31Z

⌛ Testing commit e2983d8 with merge 1891c28...

bors · 2025-01-04T23:55:16Z

☀️ Test successful - checks-actions
Approved by: workingjubilee
Pushing 1891c28 to master...

rust-timer · 2025-01-04T23:57:03Z

📌 Perf builds for each rolled up PR:

PR#	Message	Perf Build Sha
#135046	turn rustc_box into an intrinsic	`90b61b5dad710fc715ed8019b46aeb061f394c20` (link)
#135061	crashes: add latest batch of tests	`15cea17f2da74c89ea269c46cea64f8fa94fab9b` (link)
#135070	std: sync to dep versions of backtrace	`42abf531cba01861def318210dc6e38ca79493ae` (link)
#135088	Force code generation in assembly generation smoke-tests	`fc5100a0a025d25d9dd643de834a334df09a843a` (link)
#135091	Bump backtrace to 0.3.75	`1362fca927abcdce6ea060494d9c9faa664e319f` (link)
#135094	bootstrap: If dir_is_empty fails, show the non-existent dir…	`0fe74c827c2a7b70160030700817fe6204cd8886` (link)

previous master: ead4a8f536

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

rust-timer · 2025-01-05T01:11:41Z

Finished benchmarking commit (1891c28): comparison URL.

Overall result: ❌✅ regressions and improvements - please read the text below

Our benchmarks found a performance regression caused by this PR.
This might be an actual regression, but it can also be just noise.

Next Steps:

If the regression was expected or you think it can be justified,
please write a comment with sufficient written justification, and add
@rustbot label: +perf-regression-triaged to it, to mark the regression as triaged.
If you think that you know of a way to resolve the regression, try to create
a new PR with a fix for the regression.
If you do not understand the regression or you think that it is just noise,
you can ask the @rust-lang/wg-compiler-performance working group for help (members of this group
were already notified of this PR).

@rustbot label: +perf-regression
cc @rust-lang/wg-compiler-performance

Instruction count

This is the most reliable metric that we have; it was used to determine the overall result at the top of this comment. However, even this metric can sometimes exhibit noise.

	mean	range	count
Regressions ❌ (primary)	0.7%	[0.7%, 0.8%]	4
Regressions ❌ (secondary)	0.7%	[0.3%, 2.2%]	4
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.3%	[-1.8%, -0.2%]	13
All ❌✅ (primary)	0.7%	[0.7%, 0.8%]	4

Max RSS (memory usage)

Results (primary 2.3%, secondary 4.8%)

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)	2.3%	[1.9%, 2.8%]	2
Regressions ❌ (secondary)	6.4%	[1.3%, 15.0%]	14
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.8%	[-5.9%, -0.8%]	3
All ❌✅ (primary)	2.3%	[1.9%, 2.8%]	2

Cycles

Results (secondary -0.8%)

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
Regressions ❌ (secondary)	1.4%	[1.4%, 1.4%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-3.1%	[-3.1%, -3.1%]	1
All ❌✅ (primary)	-	-	0

Binary size

Results (primary 0.3%, secondary 0.8%)

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)	0.3%	[0.1%, 0.8%]	15
Regressions ❌ (secondary)	0.8%	[0.5%, 1.4%]	38
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.3%	[0.1%, 0.8%]	15

Bootstrap: 762.69s -> 763.656s (0.13%)
Artifact size: 325.64 MiB -> 325.61 MiB (-0.01%)

klensy · 2025-01-05T10:24:43Z

Small binary size regression should be hopefully fixed by #135110?

Kobzol · 2025-01-05T10:30:54Z

That was not it (#135113 (comment)), probably it was just the backtrace bump.

workingjubilee · 2025-01-06T00:17:29Z

hm, might need to adjust how we're measuring sizes for backtrace...

Kobzol · 2025-01-06T07:22:23Z

It might have been also caused by #135070.

Kobzol · 2025-01-06T07:22:47Z

@rust-timer build 1362fca

rust-timer · 2025-01-06T08:38:04Z

Finished benchmarking commit (1362fca): comparison URL.

Overall result: no relevant changes - no action needed

Instruction count

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

Max RSS (memory usage)

Results (secondary -1.9%)

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
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.9%	[-1.9%, -1.9%]	1
All ❌✅ (primary)	-	-	0

Cycles

Results (secondary -0.7%)

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
Regressions ❌ (secondary)	2.8%	[2.8%, 2.8%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.5%	[-2.6%, -2.4%]	2
All ❌✅ (primary)	-	-	0

Binary size

Results (primary 0.2%, secondary 0.3%)

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)	0.2%	[0.0%, 0.3%]	12
Regressions ❌ (secondary)	0.3%	[0.2%, 0.6%]	38
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.2%	[0.0%, 0.3%]	12

Bootstrap: 762.69s -> 761.839s (-0.11%)
Artifact size: 325.64 MiB -> 325.62 MiB (-0.01%)

Kobzol · 2025-01-06T08:45:22Z

Seems like it was indeed #135091.

Kobzol · 2025-01-07T09:59:40Z

The perf. effects on the deep-vector benchmark were most likely caused by #135046, and it seemed to have been expected.

@rustbot label: +perf-regression-triaged

RalfJung and others added 13 commits January 3, 2025 12:01

turn rustc_box into an intrinsic

ac9cb90

sync to actual dep verions of backtrace

31ffc66

tidy

4d3a028

Bump backtrace to 0.3.75

66bf53a

I prefer when we can ship the same version of backtrace on crates.io, and this will be the next published version. Compare: rust-lang/backtrace-rs@4d7906b...0.3.75 Mostly internal-to-backtrace changes, plus a tiny code size win.

bootstrap: If dir_is_empty fails, show the non-existent directory path

2cefd30

This should help when trying to debug issues.

crashes: add latest batch of tests

9444195

Rollup merge of rust-lang#135046 - RalfJung:rustc_box_intrinsic, r=co…

7cf3b96

…mpiler-errors turn rustc_box into an intrinsic I am not entirely sure why this was made a special magic attribute, but an intrinsic seems like a more natural way to add magic expressions to the language.

Rollup merge of rust-lang#135061 - matthiaskrgr:crashes_jan, r=lqd

0da5bb4

crashes: add latest batch of tests try-job: aarch64-apple try-job: x86_64-msvc try-job: x86_64-gnu try-job: dist-i586-gnu-i586-i686-musl

Rollup merge of rust-lang#135094 - joshtriplett:bootstrap-show-nonexi…

e2983d8

…stent-dir, r=jieyouxu bootstrap: If dir_is_empty fails, show the non-existent directory path This should help when trying to debug issues.

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 Jan 4, 2025

bors added the merged-by-bors This PR was explicitly merged by bors. label Jan 4, 2025

bors merged commit 1891c28 into rust-lang:master Jan 4, 2025
7 checks passed

rustbot added this to the 1.86.0 milestone Jan 4, 2025

rustbot added the perf-regression Performance regression. label Jan 5, 2025

workingjubilee deleted the rollup-owp3czl branch January 6, 2025 00:14

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rustbot added the perf-regression-triaged The performance regression has been triaged. label Jan 7, 2025

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Rollup of 6 pull requests #135101

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Rollup of 6 pull requests #135101

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Overall result: ❌✅ regressions and improvements - please read the text below

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