Nicholas Shahan
027f57227f
Optimize repetitive calls to isSubtype with a caches to store pairwise results. There are currently two caches for sound and unsound results but in the future that can be combined into a single cache once the library is aware of error reporting. That single cache could stores "pass", "fail", or "fails when sound mode but passes in unsound null safety". Issue: https://github.com/dart-lang/sdk/issues/48585 Change-Id: I49e5794703fd58f1b2bba50e426e25146800fbb8 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/323707 Reviewed-by: Mayank Patke <fishythefish@google.com> Commit-Queue: Nicholas Shahan <nshahan@google.com>