Files
rust/src
Stuart Cook fe0b51939c Rollup merge of #146484 - notriddle:stringdex-js-opt, r=GuillaumeGomez
rustdoc-search: JavaScript optimization based on Firefox Profiler output

Part of https://github.com/rust-lang/rust/issues/146048

Preview: https://notriddle.com/rustdoc-html-demo-12/stringdex-js-opt/std/index.html

These commits are based on some profiler readings, and should reduce CPU usage for name-based searching.

- The first commit improves warm searches by allocating less garbage when data is already loaded:

  Before: https://profiler.firefox.com/public/wvzd88m8r70p8frvz1z628tv3htwna0b9c0ef10/calltree/?globalTrackOrder=0w2&implementation=js&thread=3&v=11

  After: https://profiler.firefox.com/public/yfe9aq6ep3kacw3zmr7jqn6gv7ckfq86rg89568/calltree/?globalTrackOrder=0w2&implementation=js&thread=3&v=11

- The second commit improves cold searches by delaying load for special type names until type-based search runs

  Before: 5.86s (throttled to "Good 2G" in Dev Tools) <https://doc.rust-lang.org/nightly/std/index.html?search=>

  <img width="2524" height="919" alt="image" src="https://github.com/user-attachments/assets/8dbbbd46-b7ab-4e3c-9e8c-f1e41cfaa968" />

  After: 5.77s (throttled to "Good 2G" in Dev Tools) <https://notriddle.com/rustdoc-html-demo-12/stringdex-js-opt/std/index.html?search=>

  <img width="2524" height="912" alt="image" src="https://github.com/user-attachments/assets/6976a584-24f4-4d47-8118-7a81b22d411e" />

  For comparison's sake, the same test takes 12.17s on stable <https://doc.rust-lang.org/1.89.0/std/index.html?search=>

    <img width="2525" height="916" alt="image" src="https://github.com/user-attachments/assets/eb6df2e8-6632-4bef-a6d0-5179c6288fd0" />
2025-09-19 22:31:50 +10:00
..
2025-09-16 11:49:20 -07:00
2025-08-26 18:09:42 +02:00
2025-09-10 10:24:07 +02:00
2025-09-05 20:20:09 +02:00
2025-09-13 10:09:15 -04:00

This directory contains some source code for the Rust project, including:

  • The bootstrapping build system
  • Various submodules for tools, like cargo, tidy, etc.

For more information on how various parts of the compiler work, see the rustc dev guide.