[MemorySSA] Fix a cache invalidation bug with removed accesses

I suspect there's a deeper issue here, but we probably shouldn't be
using INVALID_MEMORYSSA_ID as liveOnEntry's ID anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@325971 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed