Re-teach IR gen to perform GC moves on rvalues resulting from various ObjC expressions.  Essentially, GC breaks a certain form of the return-value optimization.
Re-teach IR gen to perform GC moves on rvalues resulting from various ObjC
expressions.  Essentially, GC breaks a certain form of the return-value
optimization.



git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@104454 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang