Alexander Markov
b80e682cbf
App-jit and core-jit snapshots generated on one machine can be copied to another machine with different CPU family/model, so it is incorrect to use CPU features of the host machine to generate code for snapshots. This change adds --target-unknown-cpu option and enables it when generating app-jit and core-jit snapshots in standalone Dart VM and gen_snapshot. Currently, this flag disables SSE4.1, popcnt and ABM on ia32 and x64, and integer division instruction on ARM. Also, new flag enables testing of roundsd instruction availability at run time on x64 (similarly to AOT). TEST=ci Fixes https://github.com/dart-lang/sdk/issues/47907 Fixes https://github.com/flutter/flutter/issues/94181 Change-Id: Id28448052a21df4bae30b39e62b8532e55d4c901 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/223960 Reviewed-by: Ryan Macnak <rmacnak@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
Dart
A client-optimized language for fast apps on any platform
Dart is:
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Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.
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Productive: Make changes iteratively: use hot reload to see the result instantly in your running app.
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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:
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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.