Simplify code in code code generator, move checks to flow graph builder. We can assume that any typ…

runtime/vm/flow_graph_builder.h

 // Copyright (c) 2012, 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_BUILDER_H_
 #define VM_FLOW_GRAPH_BUILDER_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 138 matching lines @@
   // preparation of a constructor call.
   // May be called only if allocating an object of a parameterized class.
   void BuildConstructorTypeArguments(ConstructorCallNode* node,
                                      intptr_t start_index,
                                      ZoneGrowableArray<Value*>* args);
 
   // Returns the value of the type arguments of the instantiator.
   Value* BuildInstantiatorTypeArguments(intptr_t token_index,
                                         intptr_t start_index);
 
-  void BuildInstanceOf(ComparisonNode* node);
+  virtual void BuildInstanceOf(ComparisonNode* node);
 
   bool MustSaveRestoreContext(SequenceNode* node) const;
 
   // Moves parent context into the context register.
   void UnchainContext();
 
   void CloseFragment() { exit_ = NULL; }
   intptr_t AllocateTempIndex() { return temp_index_++; }
 
   virtual void CompiletimeStringInterpolation(const Function& interpol_func,
@@ skipping 63 matching lines @@
   // Specify a computation as the final result.  Adds a Bind instruction to
   // the graph and returns its temporary value (i.e., set the output
   // parameters).
   virtual void ReturnComputation(Computation* computation) {
     AddInstruction(new BindInstr(temp_index(), computation));
     value_ = new TempVal(AllocateTempIndex());
   }
 
   virtual void CompiletimeStringInterpolation(const Function& interpol_func,
                                               const Array& literals);
+
+  virtual void BuildInstanceOf(ComparisonNode* node);
 };
 
 
 // Translate an AstNode to a control-flow graph fragment for both its effects
 // and value as an outgoing argument.  Implements a function from an AstNode
 // and next temporary index to a graph fragment (as in the
 // EffectGraphBuilder), an updated temporary index, and an intermediate
 // language Value.
 class ArgumentGraphVisitor : public ValueGraphVisitor {
  public:
@@ skipping 54 matching lines @@
   }
 
   // Output parameters.
   TargetEntryInstr** true_successor_address_;
   TargetEntryInstr** false_successor_address_;
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_BUILDER_H_