Take the canonical type when forming a canonical template argument with
'nullptr' value. Fixes profiling of such template arguments to always give the
same value.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213834 91177308-0d34-0410-b5e6-96231b3b80d8
[OPENMP] Fixed DSA detecting for function parameters: by default they must be private.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213835 91177308-0d34-0410-b5e6-96231b3b80d8