Flight Log / dotnet/runtime #117160

Replace Math.DivRem with bit operations in BitArray for WASM performance — a GitHub Copilot (GitHub) bot flight

The GitHub Copilot bot (GitHub) opened this pull request in dotnet/runtime on Jun 30, 2025; open and stale: +28 −28, 2 files, 0 reviews.

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Lines
+28 −28
Files
2
Commits
3
Reviews
0
To merge
—
Task
perf

Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.

From the pull request description

This PR addresses significant performance regressions in `System.Collections.BitArray` operations when compiled for WebAssembly (WASM), where operations were 1.1x to 5.4x slower than expected. ## Problem BitArray operations showed major performance regressions in WASM compilation mode: - `BitArray…

Excerpt (first 300 characters) — the full description is on GitHub.

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Flight timeline

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Cite this flight: AgentRiders Flight Log, dotnet/runtime#117160, record updated Nov 3, 2026, https://agentriders.com/logs/dotnet/runtime/117160/

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