2022-03-22 Triage Log

Very quiet week for performance, with just one statistically significant change landing in the last week. This change was a regression, though primarily in stress tests, and was a result of a soundness fix.

Triage done by @simulacrum. Revision range: 3ba1ebea122238d1a5c613deb1bf60ce24bd8fd8..3ea44938e21f0de8ae7d4f6399a8a30f97867c70

1 Regressions, 0 Improvements, 0 Mixed; 0 of them in rollups 37 comparisons made in total

Regressions

Disable almost certainly unsound early otherwise branch MIR opt #95161

• Arithmetic mean of relevant regressions: 3.1%
• Largest regression in instruction counts: 8.5% on full builds of deeply-nested-multi check
• Minimal impact on primary benchmarks, and as a soundness fix naturally pretty justified.

Improvements

• No improvements.

Mixed

• No mixed results.