Michael Gottesman 950e55d899 [sil][typelowering] Inline (i.e. eliminate) the confusing method TypeLowering::getLoweringStyle() and change it to properly use TypeExpansionKind::None instead of TypeExpansionKind::DirectChildren for the non-expansion case. ...

Now we will consistently expand destroy_addr/copy_addr into either
{retain,release}_value or into ARC operations on its most derived descendents.
This will improve code-size (by not expanding when we didn't intend to), but
more importantly preserve invariants that the ARC optimizer depends upon.

rdar://36509461

2018-01-25 14:09:57 -08:00

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