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dart / sdk / 555e965bb154a77e72ee4f078d8c3dd6b4db7075
commit555e965bb154a77e72ee4f078d8c3dd6b4db7075[log] [tgz]
authorÖmer Sinan Ağacan <omersa@google.com>Wed Oct 18 06:39:59 2023 +0000
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Oct 18 06:39:59 2023 +0000
tree314f40361175ff414ffbf756e144b7eb57bb8fca
parente61055abf0821c429ca4ee910b6a70749be03aad [diff]
[dart2wasm] Duplicate VM's convert patch for dart2wasm targets

This copies VM's convert implementation in dart2wasm's default and JSCM
targets, to be able to optimize the implementation based on these
targets' typed data and string implementation classes.

An example optimization that specializes UTF-8 decoder to `_U8List` can
be seen in [1], which improves a real-world benchmark (extracted from
internal) from 220ms to 90ms. (-59%)

Another optimization is we will be using the browser's UTF8 and JSON
decoders in JSCM convert patch.

VM's convert patch is moved from vm_shared to vm, as it's no longer used
outside of VM.

[1]: https://dart-review.googlesource.com/c/sdk/+/330121

Tested: existing tests.
Change-Id: I981070615a106e4f356ed8b292a29ec950bd4d97
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/330781
Reviewed-by: Jackson Gardner <jacksongardner@google.com>
Commit-Queue: Ömer Ağacan <omersa@google.com>
5 files changed
tree: 314f40361175ff414ffbf756e144b7eb57bb8fca
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. docs/
  6. pkg/
  7. runtime/
  8. samples/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .style.yapf
  21. .vpython
  22. AUTHORS
  23. BUILD.gn
  24. CHANGELOG.md
  25. codereview.settings
  26. CONTRIBUTING.md
  27. DEPS
  28. LICENSE
  29. OWNERS
  30. PATENT_GRANT
  31. PRESUBMIT.py
  32. README.dart-sdk
  33. README.md
  34. sdk.code-workspace
  35. sdk_args.gni
  36. SECURITY.md
  37. WATCHLISTS
README.md

Dart

A client-optimized language for fast apps on any platform

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 platforms illustration

License & patents

Dart is free and open source.

See LICENSE and PATENT_GRANT.

Using Dart

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).

Building Dart

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.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.