The Dart2JS team has agreed that this mode of compilation is no longer worth investing in at this time and its existence adds some overhead to other feature work so it is worth fully removing. In the future we may revisit this mode of compilation. Below is some more context for any future exploration in this space.
What didn't work with modular analysis:
- current modular analysis was computing impacts, which were dense (50% of the size of kernel)
- using it moved work to a modular phase, and cut Phase1 in half however end-to-end time was not better
- data overhead was very high
- it made it much harder to maintain invariants throughout the pipeline: the data is tightly coupled with the kernel AST, making it hard to make late modifications to the AST.
How to potentially make it better:
- make the data much more sparse
- make the data more independent from the kernel AST so that transformations are not breaking
- reduce the critical path in a more substantial way.
Note: We retain and ignore the commandline flags used for modular analysis in order to avoid breaking build pipelines that were passing them. We may remove these at a later date.
Change-Id: If574ce2358280ab5fedd89c62665328601e72e22
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/333360
Reviewed-by: Mayank Patke <fishythefish@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nate Biggs <natebiggs@google.com>
This entrypoint is practically unused. We normally use
`lib/src/dart2js.dart` instead.
Long ago it wasn't possible to launch a script from the `lib` folder
without running into import canonicalization issues. However, a few
years ago the VM and CFE now normalize the entrypoints. When we
invoke `pkg/compiler/lib/src/dart2js.dart` it gets treataed as
`package:compiler/src/dart2js.dart`. As a result, we really no
longer had a need to have a separate entrypoint in the `bin` folder
that reexports the other entrypoint.
The only remaining references to this file were from documentation
and a couple unit tests. This CL updates those remaining uses.
Change-Id: Ic4c3c5c030db4e497f1d136979f7212db29cc533
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/302640
Reviewed-by: Nate Biggs <natebiggs@google.com>
Auto-Submit: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nate Biggs <natebiggs@google.com>
Always import 'lib/compiler_api.dart' with prefix 'api'.
Remove import of 'lib/src/compiler.dart' with prefix 'api'.
Some of the test helper files under 'compiler/test' are a little tedious
with lots of 'api.' prefixes and I could be convinced to change them
back but I think we should stick with always using a prefix under
'compiler/lib/'.
Change-Id: I3f82d7d31f1c90a860c9811fce031a64cea04ddb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/241867
Reviewed-by: Joshua Litt <joshualitt@google.com>
Commit-Queue: Stephen Adams <sra@google.com>
Most of these tools have been replaced by better tools.
We may re-add some of these in the future, but if so then maybe they should live in pkg/compiler/tool.
Change-Id: I673dd27dafad59cc01b0be0705c2032c11fca713
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/231980
Reviewed-by: Stephen Adams <sra@google.com>
Commit-Queue: Joshua Litt <joshualitt@google.com>
Johnni Winther