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dart / sdk / a22daf8acc6c3569d28a1dfec9282a3a199cbe78
commita22daf8acc6c3569d28a1dfec9282a3a199cbe78[log] [tgz]
authorAlexander Markov <alexmarkov@google.com>Thu Nov 14 22:01:15 2024 +0000
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Nov 14 22:01:15 2024 +0000
tree5ccba3fbb06d51c4fa08397479324d1b3e7f5cf6
parent843c47b9a1f3db40686b8e0c739aef282aff61f5 [diff]
[vm/compiler] Remove speculative shift instructions

SpeculattiveShiftInt64Op and SpeculativeShiftUint32Op instructions are
only used in JIT. The only advantage of these instructions over
non-speculative shifts is that they can be hoisted out of the loops
in more cases. However, speculative instructions can suffer from deopt
storm, introduce unnecessary differences in IL and generated code
between JIT and AOT and add sufficient amount of extra code to maintain.

TEST=ci

Change-Id: I689e44b54832e2af76cbc99b9fc4bc937b9f2c87
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/394566
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
10 files changed
tree: 5ccba3fbb06d51c4fa08397479324d1b3e7f5cf6
  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.