Aske Simon Christensen 68fd2a9d52 [vm/jit] Pessimize type assumption in LoadLocal of covariant parameter.
This avoids unsound optimizations that could arise from loading a
parameter before its type had been checked.

Affects only unoptimized code.

Fixes https://github.com/dart-lang/sdk/issues/43464

Some considerations for a cleaner fix are described in
https://github.com/dart-lang/sdk/issues/43654

Change-Id: I05872e46495313e82e9c516e5f283e1bc4612300
Cq-Do-Not-Cancel-Tryjobs: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/164500
Commit-Queue: Aske Simon Christensen <askesc@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2020-10-02 16:17:58 +00:00
2020-09-16 19:24:28 +00:00
2020-08-06 21:29:29 +00:00
2020-10-02 09:04:08 +00:00
2020-10-01 22:10:40 +00:00
2019-08-16 12:03:17 +00:00
2020-01-20 09:32:58 +00:00
2020-08-10 20:56:14 +00:00

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).

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, 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.

S
Description
No description provided
Readme BSD-3-Clause 1.4 GiB
Languages
Dart 84.6%
C++ 13%
Python 0.7%
JavaScript 0.5%
HTML 0.4%
Other 0.5%