They're private static methods but we can just make them static
functions in the implementation. It makes the implementations a touch
more wordy, but takes another chunk out of the header file.
Also, take the opportunity to switch the names to the new coding
conventions.
No functionality changed here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151047 91177308-0d34-0410-b5e6-96231b3b80d8