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Rollup of 4 perf-sensitive pull requests - #164921

Closed

JonathanBrouwer wants to merge 12 commits into

rust-lang:mainfrom

JonathanBrouwer:rollup-hBz3VHb

Closed

Rollup of 4 perf-sensitive pull requests#164921
JonathanBrouwer wants to merge 12 commits into
rust-lang:mainfrom
JonathanBrouwer:rollup-hBz3VHb

Commits on Oct 5, 2026
- Inline `Cow::to_mut`
  joshtriplett
  committed
  d3cefda
Commits on Oct 6, 2026
- Inline `Vec` fold operations
  joshtriplett
  committed
  48c4946
- Inline `Copied` fold operations
  joshtriplett
  committed
  3e91052
- Inline `Cloned` fold operations
  joshtriplett
  committed
  d136cc4
- Inline fold operations for Chain and Map, for performance
  joshtriplett
  committed
  39c2880
Commits on Oct 14, 2026
- deduplicate DefId encodings in the query cache
  TaKO8Ki
  committed
  8190021
Commits on Oct 19, 2026
- Don't emit allow attributes in try/contract desugaring
  mejrs
  committed
  e1663b6
Commits on Oct 25, 2026