swift

4abefdb3 - [IRGen] Canonicalize symbolic ref types in the right generic context (#25955)

[IRGen] Canonicalize symbolic ref types in the right generic context (#25955) When referencing a superclass type from a subclass, for example, the type uses the subclass's generic parameters, not the superclass's. This can be important if a nested type constrains away some of its parent type's generic parameters. This doesn't solve all the problems around mis-referenced generic parameters when some are constrained away, though. That might require a runtime change. See the FIXME comments in the test cases. rdar://problem/51627403