swift

2cf9f19d - [AutoDiff] Make AD primal value structs `@usableFromInline`. (#22106)

[AutoDiff] Make AD primal value structs `@usableFromInline`. (#22106) * Make AD primal value structs `@usableFromInline`, because they'll currently show up in code completion. It should never be exposed to the user. * Prepend an underscore to AD-generated type names.