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Nate Biggs acd2ad41b6 [dart2js] Union old and new type when refining in type inference.
This change doesn't seem to have a significant impact on most compilation results:
- Golem results show no significant difference in microbenchmarks.
- For a medium and large app tested, while we see a small change in the actual inference results, the generated code is identical before/after this change.
- Timing and memory usage on internal compilations seem comparable before/after this change.

Note: This replaces the need for any notion of "invalid" refines so I will clean up that code in a follow up change.

Change-Id: I2a293eacd944fc17ee2dab97d3d947c042b4038f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/313720
Commit-Queue: Nate Biggs <natebiggs@google.com>
Reviewed-by: Mayank Patke <fishythefish@google.com>
2023-07-14 20:46:17 +00:00
.dart_tool [infra] re-land work to auto-generate .dart_tool/package_config.json 2022-04-12 17:21:02 +00:00
.github Bump ossf/scorecard-action from 2.1.3 to 2.2.0 2023-07-10 10:03:28 +00:00
benchmarks [benchmarks] Update legacy benchmarks to use the List.filled constructor 2023-05-22 14:14:42 +00:00
build [fuchsia] Plumbing for the VMEX resource. 2023-06-20 19:28:18 +00:00
docs Spelling pkg analyzer lib 2023-01-25 14:08:27 +00:00
pkg [dart2js] Union old and new type when refining in type inference. 2023-07-14 20:46:17 +00:00
runtime [vm] Refactor handling of kernel data in compiler frontend 2023-07-14 10:15:06 +00:00
samples [infra] Make the sanitizer a first-class status variable. 2023-07-10 17:46:31 +00:00
sdk [js|dart2wasm] Add JSArrayImpl subtype of List<JSAny?>. 2023-07-14 17:12:01 +00:00
tests [dart2js] Union old and new type when refining in type inference. 2023-07-14 20:46:17 +00:00
third_party [pkg/ffi] Roll dart-lang/native 2023-07-11 19:14:48 +00:00
tools Balance VM JIT and AOT shards. 2023-07-14 16:01:09 +00:00
utils [build] Collapse now-identical application_snapshot and kernel_application_snapshot. 2023-06-23 21:58:30 +00:00
.clang-format
.gitattributes [web] rename suite dart2js -> web. 2021-02-04 23:11:32 +00:00
.gitconfig [infra] Add documentation to .gitconfig 2018-06-11 18:24:16 +00:00
.gitignore [tool] Bisection tool 2023-07-13 13:22:26 +00:00
.gn [infra] Migrate scripts to python3 2021-04-15 10:10:20 +00:00
.mailmap Fixed various typos in a lot of files 2022-07-25 12:21:59 +00:00
.style.yapf Mass format python with yapf 2019-08-05 20:34:31 +00:00
.vpython [infra] Add .vpython spec to fix gsutil on the bots (#31065) 2018-10-11 15:11:35 +00:00
AUTHORS Simplify the license situation 2022-09-14 21:06:22 +00:00
BUILD.gn [dart2wasm] Add option and target for stringref. 2023-06-21 14:25:38 +00:00
CHANGELOG.md Revert "[dart:js_interop] Remove Object.toJS and JSNumber.toDart" 2023-07-13 21:06:05 +00:00
codereview.settings [infra] Default presubmits to use python3 2021-08-24 08:20:47 +00:00
CONTRIBUTING.md Update CONTRIBUTING.md 2023-05-16 13:04:13 +00:00
DEPS [co19] Roll co19 to 7e4ba229fecce1affe8284b166744329182feb3e 2023-07-14 09:29:50 +00:00
LICENSE Update LICENSE 2021-04-08 07:57:10 +00:00
OWNERS [owners] update the top-level owners file 2022-11-11 21:03:52 +00:00
PATENT_GRANT Rename patent file 2019-08-16 12:03:17 +00:00
PRESUBMIT.py Add year checking in PRESUBMIT.py 2023-02-01 16:31:32 +00:00
README.dart-sdk Fix README.dart-sdk file to reflect current contents of the SDK 2023-02-02 03:10:09 +00:00
README.md master => main 2021-09-10 08:02:49 +00:00
sdk.code-workspace Add an explicit Visual Studio Code workspace 2023-05-17 23:08:19 +00:00
sdk_args.gni Fix typos 2022-06-15 11:08:28 +00:00
SECURITY.md Add link to published advisories 2022-02-08 19:45:07 +00:00
WATCHLISTS Add a watchlist entry for changes to _fe_analyzer_shared 2023-03-31 13:59:27 +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, 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.