This change will optimize code generation for contravariant checks on
variantly sound type parameters. We avoid emitting `_check()`s.
This will also add the change to ensure that reified types of torn off
methods are correct.
Change-Id: Ic7a4aa8f92b5e3489f7cd590070772358ef2c84b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124108
Commit-Queue: Kallen Tu <kallentu@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Kallen Tu
54d7b0307b