When casting region, if we do not create an element region, record the cast-to 
type. 

When retrieving the region value, if we are going to create a symbol value, use
the cast-to type if possible.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73690 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed