Re-Revert r257105 (Verifier debug info changes)

While I investigate some new buildbot failures. This was originally reapplied
as r257550 and r257558.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257563 91177308-0d34-0410-b5e6-96231b3b80d8
38 files changed