![]() This CL copies and modifies hash map and set base class `_HashBase` currently shared with the VM, to improve types of the fields. The Wasm struct for hash map and set objects was previously: (type $_HashBase (sub $Object (struct (field $field0 i32) (field $field1 (mut i32)) (field $field2 (mut (ref null $Object))) ;; _index (field $field3 (mut i64)) (field $field4 (mut (ref $Object))) ;; _data (field $field5 (mut i64)) (field $field6 (mut i64))))) Now: (type $_HashBase (sub $Object (struct (field $field0 i32) (field $field1 (mut i32)) (field $field2 (mut (ref $Array<WasmI32>))) ;; _index (field $field3 (mut i64)) (field $field4 (mut (ref $Array<Object?>))) ;; _data (field $field5 (mut i64)) (field $field6 (mut i64))))) _index and _data fields are now non-nullable Wasm arrays. This removes downcasts and one layer of indirection when accessing the elements. In addition, when accessing `_index` this eliminates unboxing the integers. Fixes #54961. Change-Id: I4e6bd5129c7c57f5716ccb23e46060d73ffca217 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/354843 Commit-Queue: Ömer Ağacan <omersa@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com> |
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.dart_tool | ||
.github | ||
benchmarks | ||
build | ||
docs | ||
pkg | ||
runtime | ||
samples | ||
sdk | ||
tests | ||
third_party | ||
tools | ||
utils | ||
.clang-format | ||
.gitattributes | ||
.gitconfig | ||
.gitignore | ||
.gn | ||
.mailmap | ||
.style.yapf | ||
AUTHORS | ||
BUILD.gn | ||
CHANGELOG.md | ||
codereview.settings | ||
CONTRIBUTING.md | ||
DEPS | ||
LICENSE | ||
OWNERS | ||
PATENT_GRANT | ||
PRESUBMIT.py | ||
README.dart-sdk | ||
README.md | ||
sdk.code-workspace | ||
sdk_args.gni | ||
SECURITY.md | ||
WATCHLISTS |
Dart
An approachable, portable, and productive language for high-quality apps on any platform
Dart is:
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Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.
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Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.
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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:
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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.
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Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).
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.