Correctly update kill infos after extending a live range and merge 2 val#'s; fix 56165 - do not mark val# copy field if the copy does not define the val#.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56199 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed