Make sure int64_t and uint64_t are consistent.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213065 91177308-0d34-0410-b5e6-96231b3b80d8
Don't create non-temporary twines.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213066 91177308-0d34-0410-b5e6-96231b3b80d8