[llvm] [PHIElimination] Handle subranges in LiveInterval updates (PR #69429)

[Carl Ritson via llvm-commits]

perlfu wrote:

Was differential revision: https://reviews.llvm.org/D158144

I think we were already happy with this after splitting out SplitCriticalEdge fix, but it has been a little while.

https://github.com/llvm/llvm-project/pull/69429