Jens Johansen
dc77baa5a8
This CL splits up `Reference.node` in to the most-often fast-case and the has-to-load case, making the procedure smaller which makes the VM inline it. This was "verified" by looking at the VMs optimized flow graph for `Reference.asClass`. This CL furthermore reduces the number of "calls" to `Reference.node` by almost half (a reduction of over 3 mio calls when compiling `compile.dart`) by "caching" the `.node` call in the `as*` methods. Change-Id: I7b5497397a11f05fdeaf05d6cc420072d98dc030 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/298101 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Jens Johansen <jensj@google.com>
Dart Kernel
Dart Kernel is a small high-level language derived from Dart. It is designed for use as an intermediate format for whole-program analysis and transformations, and to be consumed by codegen and execution backends.
The kernel language has an in-memory representation in Dart and can be serialized as binary or text.
Both the kernel language and its implementations are unstable and are under development.
This package contains the Dart part of the implementation and contains:
- A transformable IR for the kernel language
- Serialization of kernel code
Note: The APIs in this package are in an early state; developers should be careful about depending on this package. In particular, there is no semver contract for release versions of this package. Please depend directly on individual versions.
See ast.dart for the in-memory IR, or binary.md for a description of the binary format. For now, the textual format is very ad-hoc and cannot be parsed back in.