Currently hash code for a closure is the hash code of it's runtime type.
This causes a lot hash collisions in some apps and cause performance
issues.
With this patch we now use captured objects in closures when calculating
hash codes.
The hash codes are now:
- For tear-offs:
mix(receiver hash, closure runtime type hash)
- For instantiations:
mix(instantiated closure hash,
hashes of captured types)
Note that an instantiation can be of a tear-off, in which case
"instantiated closure hash" will calculate the tear-off hash as above.
- For others (function literals, static functions), the hash is the
identity hash.
Fixes#54912.
CoreLibraryReviewExempt: Mark private corelib function as entry-point in Wasm
Change-Id: I6a123fdc690237f543bb8bf832f0f8119d013a55
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/353162
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Ömer Ağacan <omersa@google.com>
Robert Nystrom