[PartialInlining] Code Refactoring

This is a NFC code refactoring and interface cleanup. This paves the
way to enable outlining-only mode for the partial inliner.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305530 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed