Extend constant folding to float and double operations.

Change-Id: I2837064b2ceea587bc171fc520507f13355292c6
diff --git a/compiler/optimizing/graph_visualizer.cc b/compiler/optimizing/graph_visualizer.cc
index 4cf0eb1..c0263e4 100644
--- a/compiler/optimizing/graph_visualizer.cc
+++ b/compiler/optimizing/graph_visualizer.cc
@@ -384,6 +384,13 @@
         << array_set->GetValueCanBeNull() << std::noboolalpha;
   }
 
+  void VisitCompare(HCompare* compare) OVERRIDE {
+    ComparisonBias bias = compare->GetBias();
+    StartAttributeStream("bias") << (bias == ComparisonBias::kGtBias
+                                     ? "gt"
+                                     : (bias == ComparisonBias::kLtBias ? "lt" : "none"));
+  }
+
   void VisitInvoke(HInvoke* invoke) OVERRIDE {
     StartAttributeStream("dex_file_index") << invoke->GetDexMethodIndex();
     StartAttributeStream("method_name") << PrettyMethod(