Commits
Joe Groff committed 855ea990634
SIL: Combine 'archetype_ref_to_super' and 'upcast'. We were wantonly applying 'upcast' to archetypes in some cases, and really, that's OK, since these instructions do the same thing (and generic specialization could turn archetype_ref_to_super into upcast). Make everyone's life easier by folding archetype_to_super into upcast. Fixes <rdar://problem/16192324>. Swift SVN r14496