[NFC] Extract out a helper function for SimplifyCall(CS, Q)

This simplifies code, but the real motivation is that it lets me clean up some downstream code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@321466 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed