Don't check for reaching type in the RangeAnalysis::GetRange.

runtime/vm/flow_graph_range_analysis.h

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_FLOW_GRAPH_RANGE_ANALYSIS_H_
 #define VM_FLOW_GRAPH_RANGE_ANALYSIS_H_
 
 #include "vm/flow_graph.h"
 #include "vm/intermediate_language.h"
 
@@ skipping 426 matching lines @@
         smi_range_(Range::Full(RangeBoundary::kRangeBoundarySmi)) { }
 
   // Infer ranges for all values and remove overflow checks from binary smi
   // operations when proven redundant.
   void Analyze();
 
   // Helper that should be used to access ranges of inputs during range
   // inference.
   // Returns meaningful results for uses of non-smi definitions that have smi
   // as a reaching type.
-  const Range* GetRange(Value* value) const;
+  const Range* GetSmiRange(Value* value) const;
 
  private:
   enum JoinOperator {
     NONE,
     WIDEN,
     NARROW
   };
   static char OpPrefix(JoinOperator op);
 
   // Collect all values that were proven to be smi in smi_values_ array and all
@@ skipping 101 matching lines @@
   BitVector* selected_uint32_defs_;
 
   FlowGraph* flow_graph_;
   Isolate* isolate_;
 };
 
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_RANGE_ANALYSIS_H_