Rollup of 7 pull requests by JonathanBrouwer · Pull Request #165617 · rust-lang/rust

JonathanBrouwer · 2026-11-07T21:18:05Z

Successful merges:

Parse LLVM options into an explicit global LibraryOptionsContext #164591 (Parse LLVM options into an explicit global LibraryOptionsContext)
Remove typed allocas and geps from gpu_offload.rs #165154 (Remove typed allocas and geps from gpu_offload.rs)
rustdoc: remove process::exit #165554 (rustdoc: remove process::exit)
update Enzyme submodule #165574 (update Enzyme submodule)
MIR opts: dont let optimize(size/none) increase the MIR opt level #165587 (MIR opts: dont let optimize(size/none) increase the MIR opt level)
coretests: speed up some tests in Miri #165589 (coretests: speed up some tests in Miri)
Replace the name of a removed MIR pass used in a test #165593 (Replace the name of a removed MIR pass used in a test)

Failed merges:

cg_llvm: Use an invariant lifetime brand for LLVM types #165580 (cg_llvm: Use an invariant lifetime brand for LLVM types)

r? @ghost

Create a similar rollup

This removes the need for workarounds to ensure drops are run (e.g. for `TempDir` cleanup).

It will ensure library options are picked up by new contexts, and lets us handle errors explicitly.

…nikic Parse LLVM options into an explicit global LibraryOptionsContext LLVM has been refactoring how it stores its internal (-mllvm) options recently, with the goal of getting rid of the global cl::opt objects. After http://github.com/llvm/llvm-project/pull/233044 LTO passes no longer uses the global options, which would cause codegen-llvm/pgo-counter-bias.rs to fail since it relies on the -runtime-counter-relocation option to get passed to LTO. Use the C API function LLVMParseCommandLineOptionsWithError which ensures the parsed options are picked up by new LLVMContexts.

@ZuseZ4

Remove typed allocas and geps from `gpu_offload.rs` Typed GEPs are being removed from the rest of the compiler in rust-lang#165146, and typed allocas were already removed, so change `gpu_offload.rs` to match. This PR also removes the constant zero GEPs ([#t-compiler > GEP constant 0 in &rust-lang#96;gpu_offload.rs&rust-lang#96;](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/GEP.20constant.200.20in.20.60gpu_offload.2Ers.60/with/635158185)). r? @ZuseZ4

…=lolbinarycat rustdoc: remove `process::exit` This removes the need for workarounds to ensure drops are run (e.g. for `TempDir` cleanup) and hopefully prevents such situations from arising again.

update Enzyme submodule

…hanna-kruppe MIR opts: dont let optimize(size/none) increase the MIR opt level It does not seem right that with `-Zmir-opt-level=0`, an `optimize(none)` function gets optimized *more* than all the other functions.

coretests: speed up some tests in Miri

…nsts, r=JonathanBrouwer Replace the name of a removed MIR pass used in a test The `ConstDebugInfo` MIR pass was replaced by the `SingleUseConsts` pass in rust-lang#125910.

JonathanBrouwer · 2026-11-07T21:18:30Z

@bors r+ p=5 force

rust-bors · 2026-11-07T21:18:33Z

📌 Commit 06a7be9 has been approved by JonathanBrouwer

It is now in the queue for this repository.

rust-log-analyzer · 2026-11-07T21:38:51Z

The job test-x86_64-gnu-next-trait-solver-polonius failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[RUSTC-TIMING] shlex test:false 0.520
   Compiling jiff v0.2.16
##[error]The runner has received a shutdown signal. This can happen when the runner service is stopped, or a manually started runner is canceled.

Session terminated, killing shell...::group::Clock drift check
  local time: Sat Nov  7 21:38:40 UTC 2026
  network time: Sat, 07 Nov 2026 21:38:41 GMT
##[endgroup]
 ...killed.
##[error]The operation was canceled.

Important

For more information how to resolve CI failures of this job, visit this link.

rust-bors · 2026-11-08T02:26:17Z

☀️ Test successful - CI
Approved by: JonathanBrouwer
Duration: 3h 14m 13s
Pushing 29f2825 to main...

github-actions · 2026-11-08T02:29:22Z

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 f5cedb8 (parent) -> 29f2825 (this PR)

Test differences

Show 12 test diffs

Stage 1

[mir-opt] tests/mir-opt/optimize_attr.rs#ABSOLUTELY-NO-OPT: [missing] -> pass (J1)
[mir-opt] tests/mir-opt/optimize_attr.rs#NO-OPT: [missing] -> pass (J1)
[mir-opt] tests/mir-opt/optimize_attr.rs#SPEED-OPT: [missing] -> pass (J1)
[mir-opt] tests/mir-opt/optimize_none.rs#NO-OPT: pass -> [missing] (J1)
[mir-opt] tests/mir-opt/optimize_none.rs#SPEED-OPT: pass -> [missing] (J1)

Stage 2

[mir-opt] tests/mir-opt/optimize_attr.rs#ABSOLUTELY-NO-OPT: [missing] -> pass (J0)
[mir-opt] tests/mir-opt/optimize_attr.rs#NO-OPT: [missing] -> pass (J0)
[mir-opt] tests/mir-opt/optimize_attr.rs#SPEED-OPT: [missing] -> pass (J0)
[mir-opt] tests/mir-opt/optimize_none.rs#NO-OPT: pass -> [missing] (J0)
[mir-opt] tests/mir-opt/optimize_none.rs#SPEED-OPT: pass -> [missing] (J0)

Additionally, 2 doctest diffs were found. These are ignored, as they are noisy.

Job group index

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard 29f282561639932ad8c56c11ef6313ffbc9bdb05 --output-dir test-dashboard

And then open test-dashboard/index.html in your browser to see an overview of all executed tests.

Job duration changes

test-x86_64-gnu-llvm-22-1: 46m 6s -> 1h 19m (+73.1%)
test-x86_64-msvc-ext3: 1h 10m -> 2h (+71.3%)
dist-x86_64-msvc: 2h 2m -> 3h 13m (+57.7%)
test-i686-msvc: 2h -> 3h 1m (+51.2%)
test-x86_64-gnu-llvm-22-2: 1h 11m -> 1h 41m (+42.0%)
dist-s390x-linux: 1h 5m -> 1h 33m (+41.7%)
dist-x86_64-netbsd: 1h 5m -> 1h 32m (+40.8%)
test-x86_64-gnu-gcc: 57m 57s -> 1h 21m (+39.9%)
dist-aarch64-llvm-mingw: 2h 1m -> 1h 13m (-39.6%)
dist-powerpc64-linux-musl: 1h 9m -> 1h 36m (+38.8%)

How to interpret the job duration changes?

Job durations can vary a lot, based on the actual runner instance
that executed the job, system noise, invalidated caches, etc. The table above is provided
mostly for t-infra members, for simpler debugging of potential CI slow-downs.

rust-timer · 2026-11-08T03:15:24Z

Finished benchmarking commit (29f2825): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

Results (secondary 1.2%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	1.2%	[1.2%, 1.2%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 482.59s -> 482.346s (-0.05%)
Artifact size: 406.17 MiB -> 406.21 MiB (0.01%)

rust-bors · 2026-11-08T03:32:22Z

📌 Perf builds for each rolled up PR:

PR#	Message	Perf Build Sha
#164591	Parse LLVM options into an explicit global LibraryOptionsCo…	`e4f6e95d39fa55c9ddc47397e2c23ffbf9a3037a` (link)
#165154	Remove typed allocas and geps from `gpu_offload.rs`	`babc2ef9be7f1fbf43a0be2fb5411672b64ea76a` (link)
#165554	rustdoc: remove `process::exit`	`3e8eff60dc4e1d6d6e90584d6282d3765e4929cc` (link)
#165574	update Enzyme submodule	`8eb8baba3172930192741bcf858fac907382425d` (link)
#165587	MIR opts: dont let optimize(size/none) increase the MIR opt…	`6241922163550a767759aed5cae66fd3e60758fe` (link)
#165589	coretests: speed up some tests in Miri	`ee3b3102b0b27232fa81a8b745010439dbde6400` (link)
#165593	Replace the name of a removed MIR pass used in a test	`fc5e2bd9092f92527c6fa10678024b46d6d99406` (link)

parent commit: f5cedb83a7

In the case of a perf regression, run the following command with the SHAs of each PR you suspect might be the cause: @rust-timer triage $SHA $SHA $SHA..., or run @rust-timer triage all to benchmark all rollup members.

ChrisDenton and others added 14 commits November 6, 2026 14:34

rustdoc: remove process::exit

0149987

This removes the need for workarounds to ensure drops are run (e.g. for `TempDir` cleanup).

Use LLVMParseCommandLineOptionsWithError in LLVMRustSetLLVMOptions

7b2a5cb

It will ensure library options are picked up by new contexts, and lets us handle errors explicitly.

coretests: speed up some tests in Miri

88489c5

Replace the name of a removed MIR pass used in a test

3a1ac1b

MIR opts: dont let optimize(size/none) increase the MIR opt level

540126a

Remove typed allocas and geps from gpu_offload.rs

718d56d

update Enzyme submodule

78d5a00

Rollup merge of rust-lang#165554 - ChrisDenton:rustdoc-remove-exit, r…

cccecc2

…=lolbinarycat rustdoc: remove `process::exit` This removes the need for workarounds to ensure drops are run (e.g. for `TempDir` cleanup) and hopefully prevents such situations from arising again.

Rollup merge of rust-lang#165574 - ZuseZ4:update-nov-07, r=ZuseZ4

2111a71

update Enzyme submodule

Rollup merge of rust-lang#165589 - RalfJung:miri-tests, r=hanna-kruppe

6af7297

coretests: speed up some tests in Miri

Rollup merge of rust-lang#165593 - lapla-cogito:debuginfo_singleuseco…

06a7be9

…nsts, r=JonathanBrouwer Replace the name of a removed MIR pass used in a test The `ConstDebugInfo` MIR pass was replaced by the `SingleUseConsts` pass in rust-lang#125910.

rust-bors Bot added the rollup A PR which is a rollup label Nov 7, 2026

rust-bors Bot 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 Nov 7, 2026

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rust-bors Bot added merged-by-bors This PR was explicitly merged by bors. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Nov 8, 2026

rust-bors Bot merged commit 29f2825 into rust-lang:main Nov 8, 2026
6 of 15 checks passed

rustbot added this to the 1.102.0 milestone Nov 8, 2026

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Rollup of 7 pull requests - #165617

Rollup of 7 pull requests#165617
rust-bors[bot] merged 14 commits into
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