Reapply most of r82939, but add a guard that FieldRegions and friends
are only specially treated by RegionStore::InvalidateRegion() when
their super region is also invalidated.  When this isn't the case,
conjure a new symbol for a FieldRegion.  Thanks to Zhongxing Xu and
Daniel Dunbar for pointing out this issue.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83043 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed