tree 42c197a9ebe139f05bb75df96495c165b24d8091
parent 43e003ba0402d014e2352cf92a17173311892e3d
author Aske Simon Christensen <askesc@google.com> 1660893078 +0000
committer Commit Bot <commit-bot@chromium.org> 1660893078 +0000

[dart2wasm] Initial async/await support based on Promise integration

This implementation has a number of limitations:

- Returning a Future from an async function is not supported.
- Every async call switches to a new stack. A later optimization will
  stay on the same stack if the call is directly awaited.
- Exceptions that cross async boundaries do not receive full stack
  traces including the async suspension points. The stack trace of the
  final exception just reflects the stack trace for the outermost
  async call.

Change-Id: I2a5d5e30d6e955999ba55842c8b2ca3427cbf954
Cq-Include-Trybots: luci.dart.try:dart2wasm-linux-x64-d8-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/241010
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Joshua Litt <joshualitt@google.com>