Update DBG_VALUE register operand during LiveInterval operations
Handling of DBG_VALUE in ConnectedVNInfoEqClasses::Distribute() was fixed in
PR16110. However DBG_VALUE register operands are not getting updated. This
patch properly resolves the value location.
Reviewers: MatzeB, vsk
Reviewed By: MatzeB
Subscribers: kparzysz, thegameg, vsk, MatzeB, dschuff, sbc100, jgravelle-google, aheejin, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D48994