Two fixes relating to debug value:
* We should change the generated code because of a debug use.
* Avoid creating debug uses of undef, as they become a kill.
Test to follow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133255 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed