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perf(allocator): inline BitSet accessors#19331

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graphite-app[bot] merged 1 commit intomainfrom
perf/bitset-inline-for-mangler
Feb 12, 2026
Merged

perf(allocator): inline BitSet accessors#19331
graphite-app[bot] merged 1 commit intomainfrom
perf/bitset-inline-for-mangler

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@Boshen
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@Boshen Boshen commented Feb 12, 2026

Summary

  • mark BitSet::has_bit, BitSet::set_bit, BitSet::unset_bit, and BitSet::clear as #[inline]
  • this targets hot mangler loops where these tiny helpers are called frequently

Validation

  • cargo test -p oxc_mangler --lib

AI Disclosure

This PR was prepared with assistance from an AI coding tool (Codex). The change and test results were reviewed before submission.

Copilot AI review requested due to automatic review settings February 12, 2026 13:49
@github-actions github-actions bot added the C-performance Category - Solution not expected to change functional behavior, only performance label Feb 12, 2026
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Pull request overview

This PR improves performance in oxc_allocator by encouraging the compiler to inline frequently called BitSet helper methods, targeting hot mangler loops.

Changes:

  • Add #[inline] to BitSet::{has_bit,set_bit,unset_bit}.
  • Add #[inline] to BitSet::clear.

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codspeed-hq bot commented Feb 12, 2026

Merging this PR will not alter performance

✅ 47 untouched benchmarks
⏩ 3 skipped benchmarks1


Comparing perf/bitset-inline-for-mangler (bfb4291) with main (b5bc900)

Open in CodSpeed

Footnotes

  1. 3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.

@Boshen Boshen added the 0-merge Merge with Graphite Merge Queue label Feb 12, 2026
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Boshen commented Feb 12, 2026

Merge activity

## Summary
- mark `BitSet::has_bit`, `BitSet::set_bit`, `BitSet::unset_bit`, and `BitSet::clear` as `#[inline]`
- this targets hot mangler loops where these tiny helpers are called frequently

## Validation
- `cargo test -p oxc_mangler --lib`

## AI Disclosure
This PR was prepared with assistance from an AI coding tool (Codex). The change and test results were reviewed before submission.
@graphite-app graphite-app bot force-pushed the perf/bitset-inline-for-mangler branch from bfb4291 to aa1e1a8 Compare February 12, 2026 15:06
@graphite-app graphite-app bot merged commit aa1e1a8 into main Feb 12, 2026
22 checks passed
@graphite-app graphite-app bot deleted the perf/bitset-inline-for-mangler branch February 12, 2026 15:12
@graphite-app graphite-app bot removed the 0-merge Merge with Graphite Merge Queue label Feb 12, 2026
camc314 pushed a commit that referenced this pull request Feb 16, 2026
### 🚀 Features

- 429d876 semantic: Assign ast node ids during semantic build (#19263)
(Boshen)
- ebb80b3 ast: Add `node_id` field to all AST struct nodes (#18138)
(Boshen)

### 🐛 Bug Fixes

- bfb15a3 semantic: Make multi_index_vec clone panic-safe (#19299)
(Boshen)
- 41c50a5 transformer: Ignore invalid JSX pragma identifiers (#19296)
(Boshen)
- deed3d8 transformer: Remove unnecessary trailing expression in object
rest spread assignment (#19259) (Boshen)
- 5bdaacc transformer: Propagate source spans for sourcemap correctness
(#19258) (Boshen)
- 3e0e5ba isolated-declarations: Align readonly class array initializer
diagnostics with tsc (#19218) (camc314)

### ⚡ Performance

- c169c77 syntax: Optimize `is_identifier_name_patched` (#19386)
(sapphi-red)
- aa1e1a8 allocator: Inline BitSet accessors (#19331) (Boshen)
- 5b90d46 semantic: Improve SoA with multi index vec (#19138) (Boshen)
- 99ce2a6 isolated_declarations: Mark all diagnostic functions as
`#[cold]` (#19279) (camc314)
- dd0220f transformer: Remove TS-only nodes earlier in
`enter_statements` (#19166) (Dunqing)
- e5baf60 isolated-declarations: Replace hash collections with
index-based Vec (#19221) (Dunqing)

### 📚 Documentation

- 569aa61 rust: Add missing rustdocs and remove missing_docs lint attrs
(#19306) (Boshen)
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3 participants