Merge "ART: Speed up HGraph::PopulateIrreducibleRecursive" am: 62358ed am: a9b3479
am: 1d9eb32

* commit '1d9eb32f8abf939bc9c5eac217469a8c132f4e05':
  ART: Speed up HGraph::PopulateIrreducibleRecursive

Change-Id: Ic741232c2db385245ca43a481002d370c7157f32