[Local] Add a convenient insertReplacementDbgValues overload, NFC

Add an overload for the common case where the replacement dbg.values
have the same DIExpressions as the originals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335643 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed