Add DebugCounters to DivRemPairs

For people who don't use DebugCounters, NFCI.

Patch by Zhizhou Yang!

Differential Revision: https://reviews.llvm.org/D50033


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@338431 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed