commit | 07d63eab7e0902d5262c8b01b61d8bd00d5334e7 | [log] [tgz] |
---|---|---|
author | Stephen Adams <sra@google.com> | Fri Feb 18 23:20:52 2022 +0000 |
committer | Commit Bot <commit-bot@chromium.org> | Fri Feb 18 23:20:52 2022 +0000 |
tree | def16ab5bb48af53d24479f1c9b5e8fe10e406c1 | |
parent | f9147d933ef019c7e304c19ac039f57226ce1e37 [diff] |
[dart2js] GVN string concatenation GVN pure stringifiers and string concatenation. I removed the comment regarding #9293. I could not understand it. Removing the 'setDependsOnSomething()' does occasionally produce worse-looking code, but at the application level, the code is marginally smaller. https://github.com/dart-lang/sdk/issues/48243 is a more general description of the 'looks better' problem that pure operations tend to sink to their use, increasing live-ranges of the operands. The sinking is sometimes advantageous - e.g. when the new location is on an error path. I see common subexpression elimination often in the pattern of constructing default strings for Intl.plural: Intl.plural(..., one: '$first (+$howManyMore language)', other: '$first (+$howManyMore languages)', ...); --> old JavaScript var t1 = A.S(first) + " (+" + howManyMore + " language)", t2 = A.S(first) + " (+" + howManyMore + " languages)"; return A.Intl__plural(..., t1, t2, ...); --> new JavaScript var t1 = A.S(first) + " (+" + howManyMore; return A.Intl__plural(..., t1 + " language)", t1 + " languages)", ...); Change-Id: I56aff26c9e5e31954fef224378f3723a05b318ea Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/233641 Reviewed-by: Sigmund Cherem <sigmund@google.com> Commit-Queue: Stephen Adams <sra@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).
Dart is free and open source.
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.
Our API reference documentation is published at api.dart.dev, based on the stable release. (We also publish docs from our beta and dev channels, as well as from the primary development branch).
If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.
There are more documents on our wiki.
The easiest way to contribute to Dart is to file issues.
You can also contribute patches, as described in Contributing.