4 Commits

Author	SHA1	Message	Date
Slava Pestov	e3b68e7bdd	Remove -enable-experimental-subclass-existentials staging flag	2017-04-27 20:46:37 -07:00
Jordan Rose	7fe6db33a9	[test] Fix IRGen/subclass_existentials.sil on 32-bit platforms.	2017-04-25 17:01:32 -07:00
Slava Pestov	454495f974	IRGen: Subclass existential scalar downcasts ... This handles the case where the left hand side of the cast is known to be class-like, and the right hand side is known at compile time to be a protocol composition type. Note that this change results in a small optimization -- a checked cast of a metatype known to be a class metatype to a class-constrained existential metatype no longer has to emit an explicit check that the source is class-constrained. Fully dynamic casts are coming up next.	2017-04-25 02:42:14 -07:00
Slava Pestov	497336c4bc	IRGen: Use the right reference counting for subclass existentials	2017-04-17 17:22:28 -06:00