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Use triomphe::ThinArc in TokenStream. #146082

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nnethercote wants to merge 1 commit into rust-lang:master from nnethercote:triomphe-extending

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@nnethercote nnethercote commented Sep 1, 2025

r? @ghost

@rustbot rustbot added A-tidy Area: The tidy tool S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Sep 1, 2025
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@bors try @rust-timer queue

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rust-bors bot added a commit that referenced this pull request Sep 1, 2025
@rustbot rustbot added the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Sep 1, 2025
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rust-bors bot commented Sep 1, 2025

☀️ Try build successful (CI)
Build commit: 0b2a374 (0b2a374f3806cd948b6307fe6094ab731eda5de3, parent: be4e9b77ab5502b7beda0b787fb3c978a7b4db79)

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Finished benchmarking commit (0b2a374): comparison URL.

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

Benchmarking this pull request means it may be perf-sensitive – we'll automatically label it not fit for rolling up. You can override this, but we strongly advise not to, due to possible changes in compiler perf.

Next Steps: If you can justify the regressions found in this try perf run, please do so in sufficient writing along with @rustbot label: +perf-regression-triaged. If not, please fix the regressions and do another perf run. If its results are neutral or positive, the label will be automatically removed.

@bors rollup=never
@rustbot label: -S-waiting-on-perf +perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

mean range count
Regressions ❌
(primary)		 0.4% [0.1%, 1.2%] 111
Regressions ❌
(secondary)		 0.8% [0.0%, 5.4%] 78
Improvements ✅
(primary)		 -0.5% [-0.7%, -0.3%] 4
Improvements ✅
(secondary)		 -0.2% [-0.2%, -0.1%] 8
All ❌✅ (primary) 0.4% [-0.7%, 1.2%] 115

Max RSS (memory usage)

Results (primary -1.7%, secondary -1.7%)

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)		 2.8% [1.1%, 4.7%] 12
Improvements ✅
(primary)		 -1.7% [-2.5%, -0.9%] 44
Improvements ✅
(secondary)		 -4.6% [-10.7%, -1.4%] 19
All ❌✅ (primary) -1.7% [-2.5%, -0.9%] 44

Cycles

Results (secondary -6.0%)

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)		 2.9% [2.0%, 3.9%] 2
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 -9.6% [-13.0%, -3.1%] 5
All ❌✅ (primary) - - 0

Binary size

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

Bootstrap: 468.792s -> 466.644s (-0.46%)
Artifact size: 388.52 MiB -> 388.70 MiB (0.05%)

@rustbot rustbot added perf-regression Performance regression. and removed S-waiting-on-perf Status: Waiting on a perf run to be completed. labels Sep 1, 2025
@rustbot rustbot removed the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Sep 2, 2025
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