fix: enable mimalloc local_dynamic_tls on macOS

[hardfist]

Summary

• Enable mimalloc local_dynamic_tls for macOS in rspack_allocator.
• Keep xtask/benchmark mimalloc features aligned with the allocator crate.

Related links

N/A

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

Validation:

• pnpm exec taplo fmt --check crates/rspack_allocator/Cargo.toml xtask/benchmark/Cargo.toml
• cargo check -p rspack_allocator
• cargo check -p rspack_benchmark --lib

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Enables the mimalloc local_dynamic_tls feature on macOS and keeps allocator-related mimalloc feature flags consistent between the allocator crate and the benchmarking xtask.

Changes:

• Enable mimalloc local_dynamic_tls on macOS in crates/rspack_allocator.
• Mirror the same mimalloc macOS feature flags in xtask/benchmark.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
xtask/benchmark/Cargo.toml	Enables local_dynamic_tls for mimalloc on macOS to match allocator configuration.
crates/rspack_allocator/Cargo.toml	Enables local_dynamic_tls for mimalloc on macOS in the allocator crate.

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[github-actions]

📦 Binary Size-limit

Comparing f8cf2e3 to feat: drop inactive branch dependencies for inlined booleans (#13863) by Fy

🙈 Size remains the same at 61.97MB

[github-actions]

Rsdoctor Bundle Diff Analysis

Found 6 projects in monorepo, 2 projects with changes.

📊 Quick Summary

Project	Total Size	Change
popular-libs	1.7 MB	+2.6 KB (0.1%)
react-10k	5.7 MB	0
react-1k	826.3 KB	0
rome	1.6 MB	0
react-5k	2.7 MB	0
ui-components	4.8 MB	+14.0 B (0.0%)

📋 Detailed Reports (Click to expand)

📁 popular-libs

Path: ../build-tools-performance/cases/popular-libs/dist/rsdoctor-data.json

📌 Baseline Commit: fafedfd743 | PR: #13863

Metric	Current	Baseline	Change
📊 Total Size	1.7 MB	1.7 MB	+2.6 KB (0.1%)
📄 JavaScript	1.7 MB	1.7 MB	+2.6 KB (0.1%)
🎨 CSS	0 B	0 B	0
🌐 HTML	289.0 B	289.0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: popular-libs Bundle Diff

📁 ui-components

Path: ../build-tools-performance/cases/ui-components/dist/rsdoctor-data.json

📌 Baseline Commit: fafedfd743 | PR: #13863

Metric	Current	Baseline	Change
📊 Total Size	4.8 MB	4.8 MB	+14.0 B (0.0%)
📄 JavaScript	4.7 MB	4.7 MB	+14.0 B (0.0%)
🎨 CSS	107.0 KB	107.0 KB	0
🌐 HTML	328.0 B	328.0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: ui-components Bundle Diff

Generated by Rsdoctor GitHub Action

[codspeed-hq]

Merging this PR will not alter performance

✅ 34 untouched benchmarks
⏩ 25 skipped benchmarks¹

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_{Comparing codex/mimalloc-local-dynamic-tls-macos (f8cf2e3) with main (fafedfd)}

Footnotes

1. 25 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. ↩