| commit | 6cbc89d6f79cd8468b31289b74c76427a27a8e98 | [log] [tgz] |
|---|---|---|
| author | Martin Kustermann <kustermann@google.com> | Mon Jan 30 17:16:15 2023 +0000 |
| committer | Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> | Mon Jan 30 17:16:15 2023 +0000 |
| tree | 59d9ea6926e9dac0d766f0e9e9a4902a3034f589 | |
| parent | 568726257081a86ca53bafb7a3191428f00b1f41 [diff] |
[cfe] Avoid repeated calls to .codeUnit() - use startsWith with offset instead In AOT compiled programs we may not know whether a String is one-byte or two-byte (internal or external) and as a result, calls to .codeUnit() are not inlined. The string canonicalizer uses it for two purposes: creating hashes for substrings and comparing substrings. => The ladder we can replace by a call to .startsWith() with a specific offset. Change-Id: I31025b3be03277a9c9505ef09d9c8a41a57e7839 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/279974 Reviewed-by: Jens Johansen <jensj@google.com> Commit-Queue: Martin Kustermann <kustermann@google.com>
Dart is:
Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.
Productive: Make changes iteratively: use hot reload to see the result instantly in your running app.
Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web.
Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:
Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.
Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).
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See LICENSE and PATENT_GRANT.
Visit dart.dev to learn more about the language, tools, and to find codelabs.
Browse pub.dev for more packages and libraries contributed by the community and the Dart team.
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If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.
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