IRgen: Assignment to Objective-C properties shouldn't reload the value, for
complex values either. Previously we did this properly for regular assignment,
but not for compound assignment.
 - Also, tidy up assignment code a bit to look more like the scalar path.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107217 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed