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dart / sdk / 22ea3d84e08d17c2d54e77a79dfa48ffc8de7275
commit22ea3d84e08d17c2d54e77a79dfa48ffc8de7275[log] [tgz]
authorMartin Kustermann <kustermann@google.com>Tue Aug 20 08:04:04 2024 +0000
committerMartin Kustermann <kustermann@google.com>Tue Aug 20 08:04:04 2024 +0000
tree1af19aae80058327856642517d67ce5285862ef6
parented6c00c2f0b5854b2ca52bacaaa05fe672822aba [diff]
[dart2wasm] Avoid type checks on parameters when we have guarantee they will succeed

This is porting a VM optimization to dart2wasm that omits implicit
incoming argument type checks if either of this holds:

  * TFA inferred a type check can be omitted
  * all callers are invocations on `this` and the method isn't torn off

This also fixes the type checking of type parameters & type arguments
for CFE-inserted forwarding stubs: For those we have to check against
types from the forwarding stub, not the method itself.

=> This bug got revealed once omitting type checks in the forwarding
=> stub (which TFA annotates as `(skip check)`)

TEST=language/covariant/subtyping_with_mixin_test

Change-Id: I6ea58f688611355a686c12a4f86fb2fa76fc76d9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380840
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ömer Ağacan <omersa@google.com>
3 files changed
tree: 1af19aae80058327856642517d67ce5285862ef6
  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. AUTHORS
  22. BUILD.gn
  23. CHANGELOG.md
  24. codereview.settings
  25. CONTRIBUTING.md
  26. DEPS
  27. LICENSE
  28. OWNERS
  29. PATENT_GRANT
  30. PRESUBMIT.py
  31. README.dart-sdk
  32. README.md
  33. sdk.code-workspace
  34. sdk_args.gni
  35. sdk_packages.yaml
  36. SECURITY.md
  37. WATCHLISTS
README.md

Dart

An approachable, portable, and productive language for high-quality apps on any platform

Dart is:

  • Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.

  • Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.

  • Productive: Make changes iteratively: use hot reload to see the result instantly in your running app. Diagnose app issues using DevTools.

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 in our repo at docs.

Contributing to Dart

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

You can also contribute patches, as described in Contributing.

Roadmap

Future plans for Dart are included in the combined Dart and Flutter roadmap on the Flutter wiki.