Adam Richardson 370d4ce200 rope: Micro optimize the creation of masks (#41132)
Using compiler explorer I saw that the compiler wasn't clever enough to
optimise away the branches in the masking code. I thought the compiler
would have a better chance if we always branched, which [turned out to
be the case](https://godbolt.org/z/PM594Pz18).

Running the benchmarks the biggest benefit I saw was:
```
push/65536              time:   [2.9067 ms 2.9243 ms 2.9417 ms]
                        thrpt:  [21.246 MiB/s 21.373 MiB/s 21.502 MiB/s]
                 change:
                        time:   [-8.3452% -7.2617% -6.2009%] (p = 0.00 < 0.05)
                        thrpt:  [+6.6108% +7.8303% +9.1050%]
                        Performance has improved.
```
But I did also see some regressions:
```
slice/4096              time:   [66.195 µs 66.815 µs 67.448 µs]
                        thrpt:  [57.915 MiB/s 58.464 MiB/s 59.012 MiB/s]
                 change:
                        time:   [+3.7131% +5.1698% +6.6971%] (p = 0.00 < 0.05)
                        thrpt:  [-6.2768% -4.9157% -3.5802%]
                        Performance has regressed.
```

Release Notes:

- N/A
2025-10-27 16:16:16 +01:00
2025-10-21 09:58:26 +02:00
2025-10-17 18:49:11 +02:00
2025-09-23 16:49:45 +00:00
2025-05-17 12:34:42 +00:00
2025-09-16 21:58:40 +00:00
2025-10-17 18:49:11 +02:00
WIP
2023-12-14 09:25:14 -07:00
2025-03-10 01:06:11 -07:00
2025-09-22 14:36:10 -07:00
2024-09-30 17:46:21 -04:00
2025-09-22 14:36:10 -07:00
2025-02-04 09:02:59 -05:00
2025-02-04 09:02:59 -05:00
2024-08-08 17:21:38 -07:00
2025-10-17 18:58:14 +00:00
2025-09-22 14:36:10 -07:00
2025-03-10 01:06:11 -07:00

Zed

Zed CI

Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.


Installation

On macOS, Linux, and Windows you can download Zed directly or install Zed via your local package manager.

Other platforms are not yet available:

Developing Zed

Contributing

See CONTRIBUTING.md for ways you can contribute to Zed.

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  • Is cargo-about unable to find the license for a dependency? If so, add a clarification field at the end of script/licenses/zed-licenses.toml, as specified in the cargo-about book.
S
Description
GPUI – Community Edition maintained by Oak Team
https://gpui-ce.github.io/
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