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dart / sdk / 43ce5487c1d72af27e9d8157e8d664dabcd7a9d7
commit43ce5487c1d72af27e9d8157e8d664dabcd7a9d7[log] [tgz]
authorAlexander Markov <alexmarkov@google.com>Wed May 17 17:11:28 2023 +0000
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed May 17 17:11:28 2023 +0000
tree9ce7930410b0053ed8e8d8974adb6434e5ec2f2c
parent027d0738d0725ca6cb61dd36bb209c08e718c4d1 [diff]
[vm/compiler] Remove unnecessary type check from optimized switches

Switch optimization now relies on static type of the tested value,
so it is safe to omit the type check (with sound null safety) or
reduce it to a null check (without sound null safety).

TEST=co19/LanguageFeatures/Patterns/Exhaustiveness/exhaustiveness_enum_A01_t01
Fixes https://github.com/dart-lang/sdk/issues/52422

Change-Id: Ic93f4f212bee9ed3bfe5035f3c8d7535274c2f63
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/304102
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
1 file changed
tree: 9ce7930410b0053ed8e8d8974adb6434e5ec2f2c
  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_args.gni
  35. SECURITY.md
  36. 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.