[vm/compiler] Canonicalize int ops with a singleton range. If range analysis has determined that a integer operation cannot throw or deoptimize and can only result in a single possible value that matches the operation's representation, replace the operation with that constant value. Be more precise about when a BinaryInt64OpInstr can throw. Previously any MOD or TRUNCDIV operation was marked as possibly throwing, but now in those cases we only mark it as possibly throwing if the right hand side can be 0. TEST=vm/dart/unsigned_truncated_division Change-Id: I0f4fd754199240715606b90a6a423dbeb268c90d Cq-Include-Trybots: luci.dart.try:vm-aot-linux-debug-simarm_x64-try,vm-aot-linux-release-x64-try,vm-aot-linux-debug-x64c-try,vm-linux-release-simarm-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/331283 Reviewed-by: Alexander Markov <alexmarkov@google.com> Commit-Queue: Tess Strickland <sstrickl@google.com>
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 is free and open source.
See LICENSE and PATENT_GRANT.
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).
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.
The easiest way to contribute to Dart is to file issues.
You can also contribute patches, as described in Contributing.