Convert these methods into static functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195825 91177308-0d34-0410-b5e6-96231b3b80d8
Convert more methods in static helpers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195826 91177308-0d34-0410-b5e6-96231b3b80d8