Build live ranges in preparation for register allocation.

Change-Id: I7ae24afaa4e49276136bf34f4ba7d62db7f28c01
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index f435cb0..286f48a 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -129,6 +129,7 @@
 
   graph->FindNaturalLoops();
   SsaLivenessAnalysis(*graph).Analyze();
+  visualizer.DumpGraph("liveness");
 
   return new CompiledMethod(GetCompilerDriver(),
                             instruction_set,