Merge "Do not look at dead phis during SsaRedundantPhiElimination." into nyc-dev
am: e4c30e4627

* commit 'e4c30e4627a70945736acd2828f39aa880a1ddb8':
  Do not look at dead phis during SsaRedundantPhiElimination.

Change-Id: I0aae747e50a225a8e5a5d71dd8863bbd0532749a