swift234

SILGen: Replace uses of TypeLowering::emitCopyInto with CopyAddrInsts.

Chris and I want to move toward canonicalizing on more abstract aggregate operations (copy_addr) instead of on the component load/store/copy|destroy_value/retain|release operations, which is easier for early passes like inout deshadowing, NRVO, and move optimization to reason about. As a first step, replace the handful of places where SILGen currently used TypeLowering::emitCopyInto with simple CopyAddrInst insertions. This affects inout initializations and emitSemanticLoadInto, neither of which should disturb early passes that relied on the old behavior.

Swift SVN r8991