Merge "Do not look at dead phis during SsaRedundantPhiElimination." am: b8154f8f36
am: f6b676e128

* commit 'f6b676e1281fa1cd9ea2040d5b58c1108ead52a1':
  Do not look at dead phis during SsaRedundantPhiElimination.

Change-Id: I755cd8b49aaa53e6abf0cff53939d5891c1bafa5