27e64c309e
The instruction sequences for dispatch table calls have three versions, depending on the selector offset relative to where the dispatch table register is pointing: - Optimal: Zero offset - Small: A small range of positive and negative offsets - Large: Larger positive offsets The exact limits for small offsets depend on the target architecture. This commit changes the dispatch table layout algorithm to favor offsets corresponding to smaller instruction sequences for selectors with many callsites. As a result, == (which is by far the most abundantly called selector) gets the zero offset, and most commonly used selectors (such as [], iterator, current and moveNext) usually get small offsets on ARM and ARM64 targets (where the range of small offsets is reasonably large). Change-Id: I4be9ef8e709c71681b5743084f280ce1673bc0ad Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/132663 Reviewed-by: Martin Kustermann <kustermann@google.com> |
||
|---|---|---|
| .github | ||
| benchmarks | ||
| build | ||
| client | ||
| docs | ||
| pkg | ||
| runtime | ||
| samples | ||
| samples-dev | ||
| sdk | ||
| sdk_nnbd | ||
| tests | ||
| third_party | ||
| tools | ||
| utils | ||
| .clang-format | ||
| .gitattributes | ||
| .gitconfig | ||
| .gitignore | ||
| .gn | ||
| .mailmap | ||
| .packages | ||
| .style.yapf | ||
| .vpython | ||
| AUTHORS | ||
| BUILD.gn | ||
| CHANGELOG.md | ||
| codereview.settings | ||
| CONTRIBUTING.md | ||
| DEPS | ||
| LICENSE | ||
| PATENT_GRANT | ||
| PRESUBMIT.py | ||
| README.dart-sdk | ||
| README.md | ||
| sdk_args.gni | ||
| WATCHLISTS | ||
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).
License & patents
Dart is free and open source.
See LICENSE and PATENT_GRANT.
Using Dart
Visit the dart.dev to learn more about the language, tools, getting started, and more.
Browse pub.dev for more packages and libraries contributed by the community and the Dart team.
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.